focus of lens
121Secondary lens — Primary lens redirects here. See also prime lens. In photography, a secondary lens is a lens designed to be used in conjunction with another lens, called the primary lens.A secondary lens may be designed to be used either in front of the primary… …
122Telecentric lens — A telecentric lens is a compound lens which has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject. This means that the chief rays (oblique rays which pass through the center of the… …
123Comparison of digital single-lens reflex cameras — This list is incomplete; you can help by expanding it. Following list compares main features of digital single lens reflex cameras (DSLRs). Order of this list should be firstly by manufacturer alphabetically, secondly from high end to low end… …
124Aplanatic focus — Aplanatic Ap la*nat ic, a. [Gr. a priv. + ? disposed to wander, wandering, ? to wander.] (Opt.) Having two or more parts of different curvatures, so combined as to remove spherical aberration; said of a lens. [1913 Webster] {Aplanatic focus} of a …
125Canon EF 70-300mm lens — The EF 70 300mm lens is a telephoto zoom lens made by Canon Inc.The lens has an EF mount to work with the EOS line of cameras.Two Canon EF telephoto zoom lenses carry the 70 300mm designation. These are the EF 70 300mm f/4.5 5.6 DO IS USM and the …
126variable-focus lens — kintamojo židinio objektyvas statusas T sritis fizika atitikmenys: angl. variable focus objective; variable focus lens; varifocal lens vok. Objektiv mit veränderlicher Brennweite, n; Varioobjektiv, n; Zoom Objektiv, n rus. вариообъектив, m;… …
127Canon EF 80-200mm lens — The EF 80 200mm lens is telephoto zoom lens made by Canon. The lens has an EF mount that works with the EOS line of cameras.This lens comes in two different versions:*f/2.8L professional lens *f/4.5 5.6 consumer lensThe 2.8L version of the lens… …
128wide-angle lens — noun a camera lens having a wider than normal angle of view (and usually a short focal length); produces an image that is foreshortened in the center and increasingly distorted in the periphery • Syn: ↑fisheye lens • Hypernyms: ↑camera lens,… …
