field curvature

field curvature

See curvature of field.

field curvature

[′fēld ‚kər·və·chər]
References in periodicals archive ?
95) features a proprietary field-flattener lens system to correct for field curvature and other optical aberrations across its entire 76.
Standard lens has inherent optical aberration called field curvature.
Generally, in any riflescope, distortion and field curvature are greater at lower powers.
Field curvature is still present so the point image is not on the FPS.
In addition, the StitchArt plus option integrates many automatic procedures and adjusting functions, including, among others, autofocus, automatic contrast and brightness optimization, automatic orientation of the scan field, and precise first order correction of the objective's residual field curvature.
The lens' optimized power distribution helps to minimize field curvature, prevent a loss of image quality at the edges of photographs and produce outstanding image quality.
At the prime focus is an additional four-element lens that corrects field curvature, critical for sharp images across the entire imaging plane.
This 2-inch unit inserts into your Newtonian telescope's focuser in front of the eyepiece or camera, correcting distorted stars near the edge of the field due to coma and field curvature.
How will a particular telescope's field curvature affect images that you shoot through it?
Designed to correct the field curvature of f/6 to f/8 refractors, the unit is ideal for the AT106 apo reviewed by Alan Dyer this month.
As with most triplet apos, however, the scope's inherent field curvature meant star images were sharply focused across only a central 15-mm-diameter image circle.
With a DX-format DSLR camera attached to the scope and squared to the optical axis, I could see the effects of field curvature only at the corners of the frame.