Not the sharpest shot in the world here, but I must say that Shedd Aquarium is one of the most poorly lit attractions in Chicago. I let Jenea use my 35mm f/1.8 so I was using my 28-70mm f/2.8, which in most cases, wasn't quite fast enough. The shot's still fairly clean and decently sharp, but of course we all strive for perfection. This just means I'll have to go back! Please let me know what you all think as any suggestions are welcomed and appreciated. Enjoy!