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Scuba Forum / General / May 2004

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underwater camera advice please

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Submersible Sid - 14 Mar 2004 04:00 GMT
Hi everyone,
I'm looking to splash out and buy my first underwater camera and
strobe. I would say that my knowledge of underwater photography is
intermediate and my technical ability likewise. I have used a friends
Nikonos unit and a Sea and Sea unit ( can't remember the model, but i
think it was S&S's better camera )Could anyone give me sound advice on
which camera and strobe to buy? The majority of my diving will be in
daylight in clear conditions such as the Red Sea or Caribbean. Would i
be better with a 35mm or digital? Which is the better format for
prints?
Thanks for helping me out.
Safe diving.....
Submersible Sid
Dan Bracuk, CTHD - 14 Mar 2004 04:10 GMT
sidinbermuda@hotmail.com (Submersible Sid) pounded away at his
keyboard resulting in:
:Hi everyone,
:I'm looking to splash out and buy my first underwater camera and
[quoted text clipped - 6 lines]
:be better with a 35mm or digital? Which is the better format for
:prints?

You are better off with digital rather than film.

If you want something pretty good and not that expensive, look at the
SeaLife Reefmaster.

The most sound advice I can give you is to always remember that the
most important part of an underwater photographic system is the diver.

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
Nitespark - 14 Mar 2004 13:00 GMT
> sidinbermuda@hotmail.com (Submersible Sid) pounded away at his
> keyboard resulting in:
[quoted text clipped - 16 lines]
> The most sound advice I can give you is to always remember that the
> most important part of an underwater photographic system is the diver.

I will echo Dan's opinion on the Sealife Reefmaster.  I recently got one
and got the external flash and the macro lenses with it also.  So far I
am very pleased with it and the quality.  I am still getting used to it
and the features.  The model I got was the DC310 which has the advanced
controls on the UW housing.  Even blowing pictures up to 8 X 10, I still
don't see any pixalation (sp) on the paper copy (when I am using maximum
resoltion).

The only thing I really "don't like" about the camera is its a bit too
bouyant for me.  I am going to experiment with some type of weighting to
get it more where I want it.

Another "bonus" out of this camera.  When you take it on vacation and
are not diving with it, it is designed to be removed from the housing
and function as a neat little digital land camera.

Andy

Signature

Hydrogen & Stupidity...the two most common elements in the universe.

Dan Bracuk, CTHD - 14 Mar 2004 14:20 GMT
Nitespark <nitespark@h8spam.cox.net> pounded away at his keyboard
resulting in:
:Another "bonus" out of this camera.  When you take it on vacation and
:are not diving with it, it is designed to be removed from the housing
:and function as a neat little digital land camera.

I find this to be a weakness with the 1.3 megapixel version.  On land
it has a slow lens and weak flash so unless you have lots of ambient
light, you might get underexposure.

The very very clever Reef Fish (Large Nassau Grouper) did something
interesting in Cozumel last year.  He used the underwater strobe with
the camera to take land shots at night.  I didn't see his photographs,
but the idea has merit.

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
Nitespark - 14 Mar 2004 15:17 GMT
> Nitespark <nitespark@h8spam.cox.net> pounded away at his keyboard
> resulting in:
[quoted text clipped - 10 lines]
> the camera to take land shots at night.  I didn't see his photographs,
> but the idea has merit.

I have been experimenting with this, both in and out of the housing
(simply holding the strobe close enough to the camera to catch the
internal strobe and trigger the flash).  It certainly helps but it takes
a little bit of experimenting.  I also got the diffuser with the strobe.

My camera is the 3.3 megapixel version.

One thing I found out about my camera (overlooked this when I reviewed
the instructions).  There are 3 flash settings.  Land, Sea, and flash.
When I first took some underwater pictures, I had it set to "Sea".
Wrong!(if you are using an external strobe).  In the "Land" and "Sea"
settings, the camera sets off a "pre-flash".  This of course triggers
the external strobe prematurely, so the end result is you do not get the
benifit of a flash.  When you set the camera to "Flash" mode, it just
flashes one time.  Live and learn.  The other thing I learned about the
camera is you have 3 settings in the menu when you are in "Flash" mode.
 Near Flash, Far Flash, and normal.  The "near flash" dampens the
exposure so the picture doesn't get washed out say in a macro shot.  The
"far flash" increases the exposure of distant objects so the flash is
more effective over a wider area.  Of course anything close to the
camera could get overexposed.

Like I said, I am still playing with it.  Got some good shots of
manatees last month in Florida.

Signature

Hydrogen & Stupidity...the two most common elements in the universe.

Dan Bracuk, CTHD - 14 Mar 2004 14:25 GMT
Nitespark <nitespark@h8spam.cox.net> pounded away at his keyboard
resulting in:
: The model I got was the DC310 which has the advanced
:controls on the UW housing.

It was the lack of controls of the housing that I liked about the
original version.  When there are only two buttons, the worse that can
happen is that you turn the camera off instead of taking the photo.

Not that I would ever do anything like that though.

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
Nitespark - 14 Mar 2004 15:21 GMT
> Nitespark <nitespark@h8spam.cox.net> pounded away at his keyboard
> resulting in:
[quoted text clipped - 4 lines]
> original version.  When there are only two buttons, the worse that can
> happen is that you turn the camera off instead of taking the photo.

I like the ability to review what I have taken if time permits and
delete it if necessary.  I got the 128mb card with mine and also took
advantage of the SeaLife rebate offer they had last year and got an
additional 32mb card, plus the screen sun shield, and a small canvas
equipment bag.

In anycase, it is certainly a lot more advanced camera than what I was
using.

> Not that I would ever do anything like that though.

Heaven forbid.
Signature

Hydrogen & Stupidity...the two most common elements in the universe.

Dan Bracuk, CTHD - 14 Mar 2004 17:04 GMT
Nitespark <nitespark@h8spam.cox.net> pounded away at his keyboard
resulting in:
:I like the ability to review what I have taken if time permits and
:delete it if necessary.  I got the 128mb card with mine and also took
:advantage of the SeaLife rebate offer they had last year and got an
:additional 32mb card, plus the screen sun shield, and a small canvas
:equipment bag.

You don't have to do this underwater, in fact, underwater is a bad
place to do it.  If you are on on land, you can do your reviewing and
deleting in your hotel room.  Bring all your cables because there
might be either a computer or television around so you can get a
better look.

If you are on a liveaboard, you can do this between dives.

128 MBytes represents a couple hundred images, and it is very unlikely
that you are going to fill it on any day of diving.

With my version, if you are in Sea or External Flash Mode, every time
you take a picture, you get to view it and decide whether or not to
save it.  If you do nothing, the image gets saved, but, it is a good
way to instantly cull the obviously bad shots.

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
Grumman-581 - 14 Mar 2004 04:39 GMT
> I'm looking to splash out and buy my first underwater camera and
> strobe. I would say that my knowledge of underwater photography is
[quoted text clipped - 5 lines]
> be better with a 35mm or digital? Which is the better format for
> prints?

Uh oh... Here we go *again*...
Submersible Sid - 20 Mar 2004 02:55 GMT
Hi guys
Thanks for all your advice. I'll be making a purchase this week.
Submersible Sid
dazed and confuzed - 20 Mar 2004 03:07 GMT
> Hi guys
> Thanks for all your advice. I'll be making a purchase this week.
> Submersible Sid
of which camera?

Signature

Life is NOT a dress rehearsal.

H. Huntzinger - 21 Mar 2004 16:01 GMT
> > I'm looking to splash out and buy my first underwater camera and
> > strobe. I would say that my knowledge of underwater photography is
[quoted text clipped - 7 lines]
>
> Uh oh... Here we go *again*...

It really is a huge YMMV with a lot of factors.   A frequent statemetn
for UW photography is that the person doesn't want to spend a lot; what
they're really probably driving for is a "Good Value".

IMO, a large percentage of the whole "What's Best?" question can't be
determined without taking the individual photographer in mind.  As such,
my rule of thumb recommendation is to get an UW camera that's generally
similar to what you prefer for topside use.

For example, if you use a full-blown SLR topside, you're probably better
off getting something similarly advanced for UW because you're more
likely to outgrow a simple PhD system pretty quickly.  Similarly, if
your idea of a camera is a PhD, then don't get an SLR for Underwater.

Insofar as all of the digital stuff, the "digital-vs-film" angle is a
personal YMMV, influenced in no small part by your intended use, as well
as what amount of significance you want to put on having reserve
capability in resolution.  There's lots of probably very good digital
stuff out there...my inclination would be to narrow down a list of nice
land camera that meets your interests and see which ones have housings
available for them, and decide from there...IMO, you're probably better
off avoiding an UW-only system.  At present, I personally like the Canon
A60/70/80 product line, partly because its battery form factor uses
AA's, and partly because Canon makes a quality product IMO.  I believe
that there is a housing for this camera too, and if the cost of the
camera is an assumed sunk cost because of its utility on land, the
additional widgets to take it UW probably aren't really all that
expensive.

-hh
H. Huntzinger - 22 Apr 2004 12:14 GMT
Dan wrote (sorry, I half-broke the thread link):
> " H. Huntzinger" <{NOSPAM-rm_to_reply}rec-scuba@huntzinger.com>
> pounded away at his keyboard resulting in:
[quoted text clipped - 5 lines]
> here in rec.scuba, that you can get some pretty good results
> using a digital camera's built in flash.

Sure, but just how deep?   Keep in mind that the request was for a
system that could go to 40m.

Personally, I can agree that an internal flash can be enough to get the
job done in clear tropical waters when shallow, but even for these ideal
conditions, I'd put the practical limit at probably 20m (60fsw) or
thereabouts before you're going to "blue out".  I've tried using the
Mandrake Process to compensate for insufficient strobe output on some
shots in the ~85ft depth range and it didn't do squat.

Similarly, another rule of thumb is that you need to open up at least
one full stop in this general depth range, and another full stop when
you bottom out at 130fsw (40m).  While some of the better digital
cameras allow you to set the cameras effective ISO, the higher you go,
the more noise you introduce into the image, which is just like the
grain you get from using faster speed film.

The reality is that there is no such thing as a free lunch ever.  You
can get by without an external strobe, but your yield will suffer as the
consequence.  So long as you go in with open eyes accepting this, that's
fine.

-hh
Lee Bell - 22 Apr 2004 14:18 GMT
> > That's the popular theory.  We have some recent evidence, right
> > here in rec.scuba, that you can get some pretty good results
[quoted text clipped - 9 lines]
> Mandrake Process to compensate for insufficient strobe output on some
> shots in the ~85ft depth range and it didn't do squat.

Personally, I think you're both giving the internal strobe to much and too
little credit.  Even in very clear water, reds are pretty much gone before
you get anywhere near 60 feet.  Normally they're gone in the first 10 feet
and, for sure in the first 30.

On the other hand, an internal flash is fine at any range it can reach, no
matter how deep you are.  I've taken some nice shots with a built in flash
at depth in the 130 foot range, but it required that I be quite close to the
subject.  In my underwater photography experience, I've found that many of
the subjects I most want a picture of, will just barely let me get close
enough for my Nikon strobe, which is a whole lot more powerful than any of
the built in strobes I'm aware of.  I've not found depth to be the issue
relative to a strobe.  The problem, as I see it, is the limited power and
dispersion of built in strobes.  They just don't provide much range or
coverage.

Lee
Dillon Pyron - 22 Apr 2004 17:54 GMT
>> > That's the popular theory.  We have some recent evidence, right
>> > here in rec.scuba, that you can get some pretty good results
[quoted text clipped - 25 lines]
>dispersion of built in strobes.  They just don't provide much range or
>coverage.

Lee, Hugh, don't you also have an issue with the flash being so close
to the lens that back scatter from particles becomes a problem?  I
seem to remember having this problem with my MX-10 before I bought the
remote flash and turned off the onboard.

>Lee

Signature

dillon

When I was a kid, I thought the angel's name was Hark
and the horse's name was Bob.

Steve - 23 Apr 2004 05:21 GMT
> Lee, Hugh, don't you also have an issue with the flash being so close
> to the lens that back scatter from particles becomes a problem?

Backscatter is definitely one of the limitations with built in flash. While it may
not seem important on the surface, in UW photography it's useful to consider that
you're not taking a picture of your subject, but rather you're capturing light with
the lens. If everything was perfect all that captured light would be only what's
reflected by your subject, but if there's any particulate matter in the water between
the lens and the subject it's going to reflect light. With an onboard flash, some
(maybe a lot) of the output of the flash is going to bounce back from the particulate
matter. Since the particulate matter will be closer than the subject, it's also going
to be overexposed, which makes it even more prominent in the resulting photo. With a
strobe that can be positioned further off-axis, you may be able to avoid lighting the
particulate matter, and even if you do light it the angle of reflection may mean that
much of the light is reflected to someplace other than the lens.

In theory an onboard flash could be just as powerful as the best external flash, but
even in a vacuum there's a good reason to get the flash away from the lens. Lighting
is almost always better when it isn't head on. FTM, lighting is almost always better
when it comes from at least two different directions. You can definitely get by with
just the onboard flash. The question is whether you want to take snapshots or good
pictures. Even if you just point and shoot, your typical results will be better with
an external flash.

Signature

Steve

The above can be construed as personal opinion in the absence of a reasonable
belief that it was intended as a statement of fact.

If you want a reply to reach me, remove the SPAMTRAP from the address.

H. Huntzinger - 23 Apr 2004 13:04 GMT
> >Personally, I think you're both giving the internal strobe to much and too
> >little credit.  Even in very clear water, reds are pretty much gone before
> >you get anywhere near 60 feet.  Normally they're gone in the first 10 feet
> >and, for sure in the first 30.

I agree that I was was liberal with the potential depth range of
available reds; IMO, around 40fsw is the practical limit, but I just
didn't want some Blackling anklebiter to fuss over relatively small
depth variations when the OP was asking for a 130fsw capable system.

In any case, its going to vary tremendously with local water conditions
anyway...I can remember while working on an Oceanographic RV doing some
water clarity measurements in DE Bay and found that "all wavelengths"
were absorbed in less than 6ft, because of the water's turbidity :-)

> >On the other hand, an internal flash is fine at any range it can reach, no
> >matter how deep you are.  I've taken some nice shots with a built in flash
> >at depth in the 130 foot range, but it required that I be quite close to the
> >subject.

Understood & agreed.  Unfortunately, a not-uncommon problem here
(particularly on the more inexpensive systems) is that  by the time that
you've gotten close enough for the small built in flash to give
satisfactory illumination, you're often right at the limit for the
camera's minimum focus distance, so you risk end up with blurry, out of
focus images and lose the shot anyway.  FWIW, the macro option built
right into some digitals does help prevent/minimize this problem
(assuming that the photographer remembers to invoke the feature).

> Lee, Hugh, don't you also have an issue with the flash being so close
> to the lens that back scatter from particles becomes a problem?  I
> seem to remember having this problem with my MX-10 before I bought the
> remote flash and turned off the onboard.

There's that issue too, and it will be aggrivated by the diver's skill
level in how much silt he kicks up to become backscatter.  The
contribution of the strobe's location comes down to two basic factors
that make an away-from-lens strobe location desirable when it comes to
limiting the effect of backscatter, although its important to realize
that the particulate never magically disappears:

The first is that backscatter is only created along the path that the
strobe's light passes through -AND- which is visible to the lens.  As
such, if you have a strobe off to the side, some of the path is
out-of-frame and thus not seen in the final image.  The built-in strobes
have nearly their entire path out to the subject and back within the
viewing area seen by the lens, so you have little choice in the matter
for "placement" of your backscatter away from the center of the frame.

The second is also an angles game:  you only ever light up "half" of the
particle, so how much of this the camera lens is able to see can also be
manipulated.

This can be a bit harder to visualize, so please humor me: think of the
camera lens as a person standing on Earth, looking up at the sky.  The
moon is our backscatter particle, and how much of the moon is lit up
(1st quarter, half full, etc) is a function of where the strobe is,
which in this case is the sun's position relative to the Earth and Moon.

The sun 'always' lights up a full 180 degrees of the Moon, but our
location on Earth is not always able to see it:  this is why we perceive
different moon phases.

When its a full moon, its because we're alligned with the sun...this is
analogous to a strobe location right next to the lens:  a built-in flash
will create "Full Moon" particles in your image.

A half moon is analogous to the strobe being off to the side:  the far
half of the moon is still illuminated, but we're simply not able to see
it from our lens location.  The result is that sidelit particles aren't
as big/bright as perceived by the camera, and are thus less noticable as
a backscatter disruption within the image.

-hh
Elliott Goldstein - 22 Apr 2004 21:07 GMT
that is what photoshop is for. to me the trade off is taking a large
bulky camera plus arms underwater or a small (good) digital camera and
then doing color correcting later. i like the latter. i also use a red
lens; it helps somewhat, especially shallow.
elliott goldstein

>Dan wrote (sorry, I half-broke the thread link):
>  
[quoted text clipped - 34 lines]
>-hh
>  
H. Huntzinger - 23 Apr 2004 13:04 GMT
> that is what photoshop is for.

Yes, you can use Photoshop and the Mandrake Process to bring back the
colors in a UW photo, but my point is that this generally only works
when the photo was taken at a relatively shallow depth...it doesn't work
to bring in a deep photo this way:  its not as if people haven't tried.

For example, take this photo and try "Mandraking" it, or any other
"unblueing of UW photo" Photoshop tinkering that you care to try:

http://www.huntzinger.com/photo/2002/galapagos/021204.3-3.jpg

> to me the trade off is taking a large
> bulky camera plus arms underwater or a small (good) digital camera and
> then doing color correcting later. i like the latter. i also use a red
> lens; it helps somewhat, especially shallow.

Sure.   But the OP had asked for a housing good to 40m (130fsw), so
they're IMO clearly not interested in limiting themselves to shallow
water photography only.

-hh
Elliott Goldstein - 23 Apr 2004 22:50 GMT
my digital pics weren't that dark. i have a bunch from caymans taken at
~100 feet that i think came out very nice. the water is very clear.

> Elliott's scuba pics <http://www.public.asu.edu/%7Eelliotg/>

look at the caymans pics, especially the black coral. that was quite deep.
elliott goldstein

>  
>
[quoted text clipped - 25 lines]
>-hh
>  
Crownfield - 23 Apr 2004 23:15 GMT
> my digital pics weren't that dark. i have a bunch from caymans taken
> at ~100 feet that i think came out very nice. the water is very clear.
[quoted text clipped - 3 lines]
> look at the caymans pics, especially the black coral. that was quite
> deep.

the color and clarity in those is almost too good to be true !!

I really enjoyed them.
one pinnacle even looks familiar.

> elliott goldstein
James Connell - 24 Apr 2004 20:53 GMT
> my digital pics weren't that dark. i have a bunch from caymans taken at
> ~100 feet that i think came out very nice. the water is very clear.
[quoted text clipped - 34 lines]
>> -hh
>>  
Dan Bracuk - 24 Apr 2004 02:56 GMT
" H. Huntzinger" <{NOSPAM-rm_to_reply}rec-scuba@huntzinger.com>
pounded away at his keyboard resulting in:
:Yes, you can use Photoshop and the Mandrake Process to bring back the
:colors in a UW photo, but my point is that this generally only works
[quoted text clipped - 5 lines]
:
:http://www.huntzinger.com/photo/2002/galapagos/021204.3-3.jpg

Just for fun, I gave it a shot with Microsoft Digital Image Pro and
the the bottom line was, not enough light.  I have had similar
experience with under exposed land shots.

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
James Connell - 24 Apr 2004 20:55 GMT
> Yes, you can use Photoshop and the Mandrake Process to bring back the
> colors in a UW photo, but my point is that this generally only works
[quoted text clipped - 5 lines]
>
> http://www.huntzinger.com/photo/2002/galapagos/021204.3-3.jpg

and of what point is there in correcting a hidiously under exposed pix
in the first place? if the shot had of been exposed correctly it could
have been saved easily. PS can easily reduce the over exposed back
ground but it'll never be able to fix that dolfin - you blew the shot.
H. Huntzinger - 29 Apr 2004 11:57 GMT
> and of what point is there in correcting a hidiously under exposed pix
> in the first place? if the shot had of been exposed correctly it could
> have been saved easily.

There's two points, really.  

The first point is that horrible pictures do happen.  

This one's insufficent illumination was because only one strobe fired.  
Its a halfway decent example of the implications of a weak strobe at
depth (~80fsw).  And despite the good things that Photoshop can do to
salvage images, I agree that this one is beyond salvaging.

The second point is that we'll probably try to salvage it anyway.

This is because we're recreational amateur photographers, not Pro's.  
Such examples of "opportunity" encounters are our memories and we are
strongly motivated to try our best to keep an image of it, regardless of
how poor its technical quality may be.  It doesn't matter if its a
blurred turtle, an out of focus seahorse, an underexposed dolphin, or
whatever.  This is simple human nature.

> ...it'll never be able to fix that dolfin - you blew the shot.

Agreed.  I had ISO 100 film where I really needed ISO 400, which pushed
my system's capability to its limit.  From there, the lack of my Slave
strobe pushed it over the edge.  

-hh
James Connell - 30 Apr 2004 05:50 GMT
>>and of what point is there in correcting a hidiously under exposed pix
>>in the first place? if the shot had of been exposed correctly it could
[quoted text clipped - 8 lines]
> depth (~80fsw).  And despite the good things that Photoshop can do to
> salvage images, I agree that this one is beyond salvaging.

without knowing what you had for a lens, it's hard to judge distance but
it would appear that dolfin is more than 15ft away (and likely >20) - No
strobe would do much, and strobe light isn't additive 2 strobes of the
same power doesn't give you twice the light - it gives 1.4 times the
light - 1/2 stop, the pix is at least 3 stops under.

the error is in not exposing for ambient light.

> The second point is that we'll probably try to salvage it anyway.
>
> This is because we're recreational amateur photographers, not Pro's.  

actualy I am a pro - I make my living shooting pictures and until last
year trained begining pros to do it.

> Such examples of "opportunity" encounters are our memories and we are
> strongly motivated to try our best to keep an image of it, regardless of
[quoted text clipped - 7 lines]
> my system's capability to its limit.  From there, the lack of my Slave
> strobe pushed it over the edge.  

the lack of fill would hurt but the pix would still be a keeper.

 invest in a meter and use it regularly to keep a track of ambient
light - that's what you keep the camera set on unless you need to make a
change afterwards reset it for ambient you'll be ready for that fast
action "snap" shot.

> -hh
H. Huntzinger - 01 May 2004 12:42 GMT
> without knowing what you had for a lens, it's hard to judge distance but
> it would appear that dolfin is more than 15ft away (and likely >20)...

It was a 15mm.  Range was much longer than I liked...10ft, maybe more.

> the lack of fill would hurt but the pix would still be a keeper.
>
> invest in a meter and use it regularly to keep a track of ambient
> light...that's what you keep the camera set on

Normally I don't have any problems with being metered to a preset.  This
was a new diving environment for me (Galapagos) and there was a lot less
illumination than what I had been expecting.  With ISO 100 film, I was
unprepared...IIRC, my default settings were along the lines of f/4 and
1/30...pretty much nearly fully wide open.  I don't recall why I didn't
just decide to push some film by 1-2 stops; probably because it was
mostly just this one sight at Wolf that was so dark, partly due to
topside weather; it was 'Galua' season.

-hh
James Connell - 01 May 2004 15:02 GMT
>>without knowing what you had for a lens, it's hard to judge distance but
>>it would appear that dolfin is more than 15ft away (and likely >20)...
[quoted text clipped - 16 lines]
>
> -hh

basic rule #5 "for handheld shooting, shutter speed should be no slower
than the reciprical of the lens length" - a 15mm lens can be shot at
1/15 sec without shake, underwater ( and with care ) you can go 1 - 2
stops slower, of course that has nothing to say about the subject - a
moving subject will still blur.

you said you shoot slide film, forget pushing it more than 1/2 stop,
most slide film will only push a stop at most and even then the contrast
increase is pretty bad. C41 film doesn't 'push' well either - you make
up if difference in printing it not in exposing/devloping it. no dye
cloud film really likes to be pushed/pulled - thats more a BW (silver)
tecnique.
H. Huntzinger - 09 May 2004 12:54 GMT
Sorry for the delay...I had a stack-up of trips.

> basic rule #5 "for handheld shooting, shutter speed should be no slower
> than the reciprical of the lens length" - a 15mm lens can be shot at
> 1/15 sec without shake, underwater ( and with care ) you can go 1 - 2
> stops slower, of course that has nothing to say about the subject - a
> moving subject will still blur.

Agreed, but on a Nikonos V, the slowest shutter speed is 1/30sec.  

And you can't use the "A" mode to try to get around this if you're using
a strobe...the strobe synch forces it to 1/90sec.

-hh
George Price - 24 Apr 2004 04:51 GMT
> Dan wrote (sorry, I half-broke the thread link):
> > " H. Huntzinger" <{NOSPAM-rm_to_reply}rec-scuba@huntzinger.com>
[quoted text clipped - 16 lines]
> Mandrake Process to compensate for insufficient strobe output on some
> shots in the ~85ft depth range and it didn't do squat.

The biggest problem with a built in flash is the direct reflection of
paritcles, usually sand, that create a triangular image in the
photograph.......at any depth.  With the light source up and away at an
angle, this does not occur.  I started with a Canon AS-6 with built in flash
in the 80's, with the inherent reflection problem, which went way with the
Nikonos system I currently use.  Although particulate matter in the water
still will show up, the large triangular images do not.

> Similarly, another rule of thumb is that you need to open up at least
> one full stop in this general depth range, and another full stop when
[quoted text clipped - 9 lines]
>
> -hh
Elliott Goldstein - 24 Apr 2004 20:22 GMT
again, the photos i took in the caymans (first dive of the day) were all
at ~100 feet. sony P7 digital, red lens cover, no flash, all camera
setting were on auto (it's why i bought that camera). auto color
corrected in photoshop elements 2.
the water is probably exceptionally clear there.

> Elliott's scuba pics <http://www.public.asu.edu/%7Eelliotg/>

look at the caymans pics, especially the black lace coral. it is one of
may favorites. the (deep) akumel pics were taken at 80-100 feet.
elliott goldstein

>  
>
[quoted text clipped - 50 lines]
>
>  
Elliott Goldstein - 24 Apr 2004 20:50 GMT
as long as photographers are reading this thread, i have a question
about where and how you get your prints. i don't want to print my own.
the last batch had poor and incorrect colors.  shutterfly  said it was
because they always do an auto color correct which messed up my
photoshop color correct.  they said they could turn it off, but the  
reprints looked just like the originals.
so, if you have color prints made, how do you do it and who do you
recommend?
thanks for the help,
elliott goldstein
Dan Bracuk - 25 Apr 2004 00:49 GMT
Elliott Goldstein <e.goldstein@asu.edu> pounded away at his keyboard
resulting in:
:as long as photographers are reading this thread, i have a question
:about where and how you get your prints. i don't want to print my own.

I print my own.  Why don't you want to?

Dan Bracuk
If at first you don't succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/
Elliott Goldstein - 26 Apr 2004 20:42 GMT
i would have to get a new printer, mine is only decent. i read a lot
about how difficult it is to get the print colors to match the screen
colors in photoshop.
elliott goldstein

>Elliott Goldstein <e.goldstein@asu.edu> pounded away at his keyboard
>resulting in:
[quoted text clipped - 11 lines]
>-----==  Over 100,000 Newsgroups - 19 Different Servers! =-----
>  
Tack - 25 Apr 2004 03:49 GMT
> as long as photographers are reading this thread, i have a question
> about where and how you get your prints. i don't want to print my own.
[quoted text clipped - 6 lines]
> thanks for the help,
> elliott goldstein

I, too, print my own for exactly the reasons you mention!
It is CHEAPER especially if you like to print 8x10's and the quality is
MILES better IMHO.
You can get a good photo-printer for a few hundred dollars now and a GREAT
photo-printer for under $1000 - either will get you the results you want.
Not the answer you want I'm sure but - that's life :-)
HTH
Tack

PS are you sure that the results you got aren't a result of a poorly
calibrated monitor on your computer?
H. Huntzinger - 28 Apr 2004 11:47 GMT
> as long as photographers are reading this thread, i have a question
> about where and how you get your prints. i don't want to print my own.
[quoted text clipped - 4 lines]
> so, if you have color prints made, how do you do it and who do you
> recommend?

I avoid the problem a few different ways.

For UW, I shoot slide film.  Yes, its narrower exposure lattitude is
more demanding, but it avoids the problem of the photo store's
computerized auto-color corrections of prints.

If I do shoot prints, I take all of my film to a local, small, in-house,
good quality photo developers whose service includes hand-checking of
all images.  It costs more, but when you give them a special request
(eg, UW images), they actually do try their best to color-correct them.  

BTW, do note that you can also often request "NO CORRECTIONS" too at
this kind of place, which is very necessary when you're trying to
compare the results of different hardware, techniques, and/or brands of
film to see what works best for you.

If I really want a print when I've shot slides, I have three or four
options:

- ship it out to have an Ilfrachrome made
- pay for local photo shop to shoot an internegative & make print
- pay for local photo shop to digitize, adjust & print it themselves
- scan it & print it out myself

I've listed these in decreasing order of _apparent_ cost...the reality
is that "saving money" by doing it assumes that your free time is worth
nothing, plus that you get your inkjet & paper supplies somehow a heck
of a lot cheaper than the rest of us.  

In your case, if what your local photoshop offered was to "turn off" the
autocorrect, this is giving you some feedback as to what your camera
actually saw...if they are bluecast and you don't like that, then you're
going to have to decide how you're going to color-adjust while still in
the water (most likely, time for a new strobe).  

IMO, a better photo shop should be willing to do more than just used the
"on/off" computer switch, as they should know how to manually adjust
your prints, plus be willing to do this if they are advertising "hand
checking" and satisfaction guarentees.  If not, go find a better shop.

Finally, if you are thinking about getting a photo-quality printer, be
aware that there's going to be a healthy price jump between standard
letter size printers and those that can handle the next size up in paper
sizes (11x14).  Between time, paper and ink costs, it may be really
worth thinking about leaving the larger print enlargements to your local
photo store.

-hh
 
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