I tried this with f11, the first was with f4 & 2nd was with f8. ISO kept same 400 for all 3 images. Experts can provide a comparison of the 3 images of the same bird.
Camera Model Canon EOS 7D, 500mm
Tv( Shutter Speed ) 1/400
Av( Aperture Value ) 11
ISO 400
Focal length 500mm
Crop
Beanbag Support
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