field curvature

[′fēld ‚kər·və·chər]

(optics)

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References in periodicals archive ?

Incorporating a simple spigot lens fitting and compatible with a choice of seven interchangeable Canon lenses, including the new RS-SL07RST 4K lens, and featuring a 1.76x motorised zoom and +/- 73 per cent vertical lens shift with minimal flare and field curvature, the development projector will deliver accurate optics and excellent image reproduction with no distortion or aberration.

Canon unveils new 4K projector

Incorporating a simple spigot lens fitting and compatible with a choice of seven interchangeable Canon lenses, including the new RS-SL07RST 4K lens, and featuring a 1.76x motorised zoom and +/- 73% vertical lens shift with minimal flare and field curvature, the development projector will deliver accurate optics and excellent image reproduction with no distortion or aberration.

Canon Announces Development of a New 4K Projector With Enhanced Features for User Experience and Brightness

There was no evidence for astigmatism, field curvature, or lateral chromatic aberration affecting off-axis images.

Meade's Mini Astrograph: The new Series 6000 70-mm apo astrograph delivers tack-sharp images across a wide field

Standard lens has inherent optical aberration called field curvature. It manifests as sharp focus in and around the center.

Getting started with macro photography

Field curvature is still present so the point image is not on the FPS.

Maximising lens appearance: dispense with confidence part 1 C-19373 O/D

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.

New LSM: makes doing a better job easier: an innovative high-tech laser scanning microscope makes using state-of-the-art equipment a breeze

The WX 10x50 IF ($6,399.95) features a proprietary field-flattener lens system to correct for field curvature and other optical aberrations across its entire 76.4[degrees] apparent field of view, providing pinpoint stars to the edge of the periphery.

Astronomy binoculars

Generally, in any riflescope, distortion and field curvature are greater at lower powers.

Parallax and distortion: how to adjust your scope

At the prime focus is an additional four-element lens that corrects field curvature, critical for sharp images across the entire imaging plane.

Celestron's: superfast astrograph: Celestron's update of the Schmidt astrograph delivers super-sharp images across an expansive field. Is there a catch?

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. Its four-element apochromatic design produces pinpoint, color-free stars in short-focal-ratio Newtonian reflectors as fast as f/3.

Coma fix

How will a particular telescope's field curvature affect images that you shoot through it?

Optical tell-all

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.

A new name in apos: the AT106 refractor: a 4.2-inch triplet apo for $2,100? Is this a price breakthrough or something that's too good to be true?

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