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Pulled out the Sigma 100-300 yesterday, and took a trip down to a local beaver pond where I'd seen a few ducks earlier in the day. By the time I got there it was getting late, and rain clouds were rolling in. The ducks had moved completely out of range, these two geese were barely at the limit on distance. Both were shot with a tripod and both are extreme crops. Manual focus was used with live view at 10x, and shutter set on 12 sec. timed release. My concern is the lack of sharpness, despite adjustments in post.
So the questions are - 1) Is this because of the extreme crop/distance, 2) Is this because of the failing light, 3) Is this just the best the lens can do, 4) Shutter speed to slow, 5) Any other suggestions for getting a sharper image?
First shot 300mm, ISO 200, f/7.1, 1/50th
Beaver Pond02122017_010.jpg by William Raber, on Flickr
Second shot 300mm, ISO 1600, f/10, 1/320
Beaver Pond02122017_001.jpg by William Raber, on Flickr
So the questions are - 1) Is this because of the extreme crop/distance, 2) Is this because of the failing light, 3) Is this just the best the lens can do, 4) Shutter speed to slow, 5) Any other suggestions for getting a sharper image?
First shot 300mm, ISO 200, f/7.1, 1/50th

Second shot 300mm, ISO 1600, f/10, 1/320
