|Equipment: Canon 20D, Canon 24-70mm, B+W Circular polarizer|
|Image details: 32mm, f/8.0, 1/640sec, ISO 400|
One of the first problems you will notice as you enter the exhibit is condensation. Give your lens a few minutes to acclimatize to the warmer temperature. Also carry with you a lens cloth as you might need to wipe the condensation off the lens. Also the aisle's in the butterfly exhibit are pretty narrow..so if you see a lot of kids around I would not recommend to set up your tripod- use your IS/VR lens instead.