walternewton
Well-known member
With my binoculars, if I've focused on the center of the field, there is some softness to the view at the edges, as would be expected...however, if I refocus, I can bring the edges into a good deal sharper view (then putting the center out of focus, of course).
Is this what's generally meant when people talk about center vs. edge sharpness or resolution or performance - that the edges are "soft" because they are not actually in focus at the same time as the center - or are they comparing in-focus center vs. in-focus edge?
Is the "edge-to-edge sharpness" you often hear about with regards to Swarovski obtained because their center and edges are more in-focus with each other at the same time? Is this what's also referred to as a "flatter field"?
Are any other brands or designs generally considered better or worse with respect to this aspect of performance?
Does the "Depth of Field" people talk about have anything to do with this issue of center vs edge focus?
Thanks.
Is this what's generally meant when people talk about center vs. edge sharpness or resolution or performance - that the edges are "soft" because they are not actually in focus at the same time as the center - or are they comparing in-focus center vs. in-focus edge?
Is the "edge-to-edge sharpness" you often hear about with regards to Swarovski obtained because their center and edges are more in-focus with each other at the same time? Is this what's also referred to as a "flatter field"?
Are any other brands or designs generally considered better or worse with respect to this aspect of performance?
Does the "Depth of Field" people talk about have anything to do with this issue of center vs edge focus?
Thanks.