Quote Originally Posted by Gustaftoni
While I thank you for your contributions, could I ask for a 100% crop from a real picture taken through the 100-400 (with a 7D)?

Here's one from me as well. Figured you might want a worst-case scenario - ISO 3200. This was taken on an early Spring afternoon on an overcast day. I was shooting birds flying overhead, and looked down to see this little guy on the shady bridge I was standing on, so I grabbed a shot without changing my settings. The relatively high shutter speed I was using for flying birds meant a high ISO - something you might run into shooting runners in the evening. There was no post-processing on this image - I was still shooting JPG at that point (have since changed to RAW only), so the image below is straight out of the camera (except cropping for an 8x10" print). Shooting info is:EOS 7D, EF 100-400mm f/4.5-5.6<span style="color: red;"]L IS USM @ 400mm, 1/1000 s, f/6.3, ISO 3200.


Full image:





100% crop:





Obviously, ISO 3200 results in a fair bit of noise on the 7D. But the detail is certainly there with the lens!


Hope that helps.


--John