finally got one...

After countless tries, I finally managed to get a boxfish (almost) frontal,

F10, 60mm, 1/60th + flash.

Should I have used higher F? distance was ~1m (yes, pic was cropped).

more pics here, simply select underwater category for the UW pics.

Looks good to me - nice portrait - needs a tune up in photoshop - here is a quick fix for ya.

Exposure looks pretty good to me. But, i think the distance might be a problem. If you need to crop to get that full of a frame you are a little far away. The less water you have between yourself and the subject will allow the photo to be much crisper.

However, much easier said than done... i gave up trying to take photos of these guys ages ago....

Mike is absolutely correct, the distance is a detail killer. It can mask those beautiful scales, and make for a soft image even though yout lens locks focus. I have a nice shot of a box fish but I'll admit it took a few minutes to get it in the right composition....tight, composure, lighting, focus on the eyes. In the "now and then" discussion, you will hear people say that getting closer is something they learned to do that was important to getting better images. I happen to agree with this rule.

Joe