Focal Lengths

Some articles on focal lengths, focal length, focal, length:

Prime Lens - Popular Focal Lengths
... or produced prime lenses at or near the following focal lengths 20mm, 24mm, 28mm, 35mm, 50mm, 85mm, 105mm, 135mm, 200mm, 300mm, 400mm, 600mm ... between 24mm and 200mm many manufacturers produce two or more lenses with the same focal length but with different maximum apertures to suit the different needs of photographers ... Additional focal lengths can be created by using a teleconverter ...
Wide-angle Lenses For 35 Mm Format
... Also by custom, a lens of focal length 35 mm or less is considered wide-angle ... differ from ultra wide angle lenses in that the latter have a focal length shorter than the short side of the film or sensor, which means that in 35mm, a wide-angle lens has a focal ... Common focal lengths for these in a 35 mm camera are 6 to 8 mm (which produce a circular image) ...
Canon EF-S 18-200mm Lens
... While Canon has produced superzooms for the full frame EF mount, they function only as normal length to long telephoto lenses on cameras equipped with APS-C sensors ... also has image stabilization and comparable apertures and focal lengths when mounted on a 35mm (or full-frame) camera ... end, and chromatic aberration and softness evident at all focal lengths and apertures ...
APS-C Lens Formats
... specifically for their cameras with a lens factor (more fully, lens focal length conversion factor) or "crop factor" ... generally exhibit vignetting when mounted on Nikon film bodies, but may be usable at longer focal lengths ... These lenses are available in focal lengths that offer similar field-of-view as lenses previously available for 135 film ...
Lenses For SLR And DSLR Cameras - Types of Lenses - Zoom Lenses
... The focal length of a zoom lens is not fixed instead it can be varied between a specified minimum and maximum value ... typically have a lower maximum aperture than fixed-focal ("prime") lenses for the same weight and cost, especially for shorter focal lengths ... by the ratio of their longest to shortest focal lengths ...

Famous quotes containing the word lengths:

    The minister’s wife looked out of the window at that moment, and seeing a man who was not sure that the Pope was Antichrist, emptied over his head a pot full of..., which shows to what lengths ladies are driven by religious zeal.
    Voltaire [Fran├žois Marie Arouet] (1694–1778)