dbh:
Actually I have used both underwater and I find composing / shooting thru a viewfinder easier than a LCD. It is also much easier (IMHO) to see if your intended subject is in focus. Why would you hold a DSLR 4" away ??? I have mine against my mask (or close to it). With a DSLR you will get less OOF pics and ALOT less "Butt Shots"
Dave
Fair enough, maybe like 3 or 2 inches from the front surface of your eyeball to the glass surface of the D70 eyepiece. Please take into account the distance between your eye and the lens on the low volume dive mask plus the thickness of the dive mask glass plus the over hang of the dive mask frame. Now even if we have the mask as close to the camera housing as possible we still have a recessed housing viewport with an overhang to prevent the glass to glass contact with the mask lens plus the thickness of the housing viewport then the distance between the housing viewport and the camera eyepiece itself. 2.5 inches at best, I measured it. Try looking at the D70 viewport from 2 inches away, can you see the entire image without shifting your head around or moving the camera? The answer is no, I have a Nikon 8008s High Eyepoint viewfinder which is about the same size as the D2H/X and I have to move my head or camera around to see the entire frame and never at one time. The D70's viewfinder is 1/3 less the size!
D70s require that your eye be less than 1/2 inch from the eyepiece in order to view the entire image at once. This really handicaps you in the composition dept. because in order to place the image where you what it you must move your head or camera to check all four corners for proper placement, either way adds extra thought process to the mix. Then you are not sure if you had shifted the camera around during all this movement, throwing the focus off, so you recheck again.
This is the main reason why we see so many " Bullseye" type of shots, where the subject is dead center of the photograph, we are just happy to get an image that is in focus! Since at any given time we only see less than 50% of the image at best in an UW housing, we pop the shutter the instant the image comes to focus in the middle of the screen. Not thinking about which eye or antenna of the subject should be in sharp focus, be it the lead or rear, depth of field, exposure, background etc.
Composition should be second nature and should go hand in hand with focusing, in an almost single continuous motion.
The "composition" is the part of photography that is YOU. Cameras can be auto focus and auto exposure but I have yet to see a camera that has auto composition!
So much for the Law of 3ths rule.
http://www.homestead.com/fixaphoto/digitalcameratips.html
The point I was making on the last post was if one is starting off in UW photography, start with a point and shoot like a Olympus 5050, 5060, 8080 or the latest Nikon Cool Pix and Canons. If you are really going for the DSLR get one with the largest viewfinder, until then stick with the point and shoot.
PS. Good job on your latest pics from Manado!
Dive Safe
Al