Photographing butterfly is actually quite difficult.
First of all, the greenhouse is extremely hot and humid. It took me at least 20 minutes for the fog to go away from my lens.
Secondly, butterflies keep flying. You have little time to capture one while it is static, this makes focus very difficult.
The light condition is not ideal. Sometime I need to push ISO to 1600 to get correct exposure.
As you can see, butterflies are not afraid of people.
There are also birds and fishes in the greenhouse.
