I recently picked up a Sigma 100-600mm Contemporary lens in a pretty good deal. Seeing as I mostly photograph wildlife, I thought this would be a good option for me with double the reach of my existing lens. However, I have been trying in vain to get any sort of sharp image out of it on my 70D.
I have done a number of shots, and have been comparing to to my Canon 70-300L, and it doesn't even come close. I don't expect it to be better, but I have yet to see one usable shot .. it almost looks like all images have motion blur, even when tripod mounted at 1/1000s.
Here is what I see at 600mm, the aerial was about 50m away, the crane about 500m away. I also can't seem to get a sharp image using the viewfinder at 10x zoom. Something that I don't have an issue with on the Canon 70-300L
Is it possible that I got a dodgy unit?