All About Photographic Lenses.
Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.

Glossary of Terms (23)

A regularly updated collection of terms, definitions, abbreviations and acronyms related to photographic lenses. You must be logged in to add a term.

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OS

Abbreviation used by Sigma to mark Optical Stabilizer Function in their lenses. Usually contained in lens name eg. (18-50mm F2.8-4.5 DC OS HSM) Translated to Canon terminology it equals to IS (Image Stabilizer)

Source: Sigma product description
Posted by: Radovan 24.02.2013 18:12:43




Soft lens

Special portrait lens that allows for taking softened photos without additional filters thanks to its special optical design.

Posted by: Sergei Borodin 23.05.2012 16:31:38




Fisheye lens

Lens with a viewing angle of 180 degrees diagonally or horizontally without distortion correction.

Posted by: Sergei Borodin 23.05.2012 16:29:38




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