I've been having issues getting decent photos of sea life at aquariums. I went to two different ones recently. I used a Canon R10 at both: for the first I took a 24 f/2.8 pancake lens and felt like the maximum aperture wasn't providing enough light to autofocus fast enough. For the second trip, I used a 50 f/1.8 and that did address that problem, but I'm still left with blurry photos and massive blue-yellow chromatic aberration. It's a challenging environment to begin with with how dark it is and how fast and unpredictability some fish and other animals move. The best - still pretty bad - results I got were at f/4, 1/300 or faster and moderate ISO speeds. Part of the issue is that, with my username being very literal, I can't really adjust my settings in response to image quality, on the spot. Reviewing images in the EVF with magnification is awesome and helpful, but I still end up getting disappointed when I open the photos up on my 32 inch monitor... So... any tips? Is there a secret for this, something like a Watery 16 rule I don't know about? For what it's worth, one of these places is pretty close by. I could get an annual pass and head there every weekend and try something new. I don't want to, but I could. Hehe.