- weight make 2,8 impossible to use in wildlife without tripod!
- at 5,6, a 200 dollar lens is the same quality optically than a 1500 canon or nikon "pro" lense!!!!!
photographer, I successfully use a 200$ lens without stabilization:
- for "birding" speed is upper 1/500s
- in low ligth cndition
using a tripod is better than stabilsation.
prefer to use this money for the camera!!!