Flat-Field Lenses
If you ask the average photographer what the difference between a macro lens and a “regular” lens is, they will tell you macro lenses enable you to get closer to your subject than regular, or conventional, lenses. While this is true, the ability to focus close is only part of the story. The other part of the story has to do with an optical characteristic called “curvature of field,” of which there are two types—flat-field and curved-field.
All Photographs © Allan Weitz 2020
Most consumer lenses are curved-field lenses, and as you might have