does edge of field quality matter with binoculars

  1. Often in reviews we see comments about edge of field quality. This includes myself. So how important is sharpness on the outer view ?. With an example looking at a bird in the center of the view, the most important factor is the sweet spot in the center where the target is. Intact the out of focus area around the bird may make it stand out more. However if you like looking at the whole picture including the surroundings , then a set with what we call a flat field will be suitable
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