Category: Technology
Created by: karel24
Number of Blossarys: 23
A comparison of contrast between a test chart and the reproduced image. One of the measurements of lens performance used in the manufacturing process.
A measure of the change in the angle of a lightwave or other wave traveling in a straight line when it passes across the boundary between two different mediums. “HRI” is an abbreviation of “high ...
A short form of “subject-to-camera distance information”, for use only where space restrictions prohibit use of the full term. Subject-to-camera distance information refers to the data supplied to ...
An opening (lens aperture) that is circular in shape. Lenses in which the opening created by the diaphragm blades is circular instead of polygonal improves the appearance of out-of-focus elements ...
A simple lens having one concave and one convex side. If the convex side has a longer focal length than the concave side, the lens is a diverging lens. But if the concave side has the longer focal ...
A focusing method that divides the lens system into multiple groups and focusing by moving only the rear group.
Used in reference to objects that show little change in their refractive index at different wavelengths. Extra-low dispersion lenses are used in making ED (extra-low dispersion) lens systems with ...