slee416:
I plan to shoot manual as well. Do you know what would happen if you are shooting manual (magnet in) and then switch over to shutter or aperature priority without taking the magnet out?
It sometimes syncs. Sometimes not. The preflash triggers the strobe and it doesn't have time to recharge. It does work often for macro shots as the discharge is so small it can make the required flashes. I wouldn't bother and just shoot manual it is just as easy.
For aperture priority - set shutter at about 125 - then just change aperture for rest of dive. When lighting scences with flash only (like macro shots), shutter is almost irelevant.
Shutter priority programs for underwater are pretty useless IMHO. High shutters almost always end in an aperture which is to large for your camera (not enough light). The metering on small digi's is not great or hard to use. So for shutter just use manual set aperture to big (F2.8 on mine) then select a shutter and see if the exposure is about right. This needs some experience and practice.
Try learning about wide angle, reading books etc. Learn about lighting techniques and how to expose foreground with a strobe and background with natural light. This I found improved my photography the most and with digital it is easy to learn by your mistakes.
slee416:
Once again great pics! I know you must be busy with uploading pics,writing the dive report and school work, but when you get a chance it would be great if you could give us a little insight into how much underwater and/or land photography experience is reflected in these pics. Huge difference from when you first started out? I'm going to Bali this Sep with the same rig and shooting for the first time with strobe. Just want to set realistic expections. Thanks!
Underwater experience - I learned to officially dive in Cocos in Jan 2003. I had done about 40 dives before I got a Sealife reefmaster film camera. I did about 10 dives with it an got some pretty good shots but a lot of rubbish. I decided that I should get a digi to give me a quicker learning curve. I bought just the A70 and housing at the end of July 2003 for a trip to Exmouth. I went snorkling heaps and made 4 dives and got some good pics. Some are in my gallery - the crocodile fish for example. I bought my strobe in Feb 2004 and when to busselton which has a great jetty and is great muck diving - the strobe was a bit harder to learn but within 5 dives I had sort of worked it out. I then bought the two attachment lenses about a month before I left for Bali and had done only 4 dives with them. I found it quite difficult and thought I'd only get a few good shots in bali. I read an article and practiced distance and light on land to get an idea. Took me the first dive in bali to get the hang of everything working together - the results are here.
This is my experience - I had taken a few shots with an SLR on land before I bought the film underwater. And Since I bought the canon have shot a lot both above and below (mainly below). So all my experience has been within a year. Also remember I love technology and so find things like digital cameras easy to use and understand, others may be different (like my dad), set goals and try to achieve them. The best advice is to try and get some constructive critisism form someone to tell you where improvements must be made, then try and replicate photographs that you have enjoyed.
September is meant to be one of the best times to be there and dive, lucky you. Hard to say what realistic expectations are, put some pics up and me and others here will offer suggestions on improvement. Photography is subjective so we can only improve technical aspects but once you get the technical part right you only have to focus on composition.