Timeline for What is the advantage of a lens with a curved focal plane?
Current License: CC BY-SA 3.0
4 events
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| Sep 23, 2016 at 11:46 | comment | added | Michael C | With objects that are slightly nearer than the subject, the field curvature brings them into focus whereas a flat field lens would leave them slightly blurred. You're trading a flat plane for a portion of a sphere. At some distance any objects on the edge at that distance will be in focus. | |
| Sep 23, 2016 at 11:44 | comment | added | Lee Saxon | That's a good detail to add; that can actually be more important. Unless you have severe space constraints you've probably got your background at least somewhat out of the focus plane. Closer objects - at middle distances or even at/near the subject's focus plane - are probably an even greater risk at distracting viewer focus. | |
| Sep 23, 2016 at 3:17 | comment | added | Michael C | It also means objects on the periphery that are in the same plane as the subject when that plane is perpendicular to the optical axis of the lens can be blurred as well, although not to the same degree that background items can. | |
| Sep 22, 2016 at 15:19 | history | answered | Lee Saxon | CC BY-SA 3.0 |