In a recent trip to Phila to visit my brother, we made an unscheduled visit to the NJ aquarium. Fortunatelly, I had my new 50mm f1.8, which helped a lot with the low light, but I still couldn't get very good results. I will post these anyway in case someone can give me some tips on how to improve the sharpness. All are handheld or leaning against walls / tank frames, almost all manually focused. 1. Dragon 2. Tun... tun... tun... tun 3. Even though it's all blurry, I liked this one. 4. Fishes 5. Ray's singing duo... It was a carrol, BTW. 6. Sea turtle and a friend 7. I am terrible angry at myself for not getting this one right. 8. I don't remember this guy's name 9. Glow in the dark Jelly fish Thanks for looking. Your comments are as always appreciated. Especially tips on how to improve sharpness.