what is is lens

Lens or Lense – Which is Correct? – Writing Explained

Lens is a noun. A lens is a curved piece of glass for viewing, and often magnifying, objects. The plural form of lens is lenses. Lenses are an important part of many devices, like cameras, binoculars, microscopes, eyeglasses, and telescopes. Eyes themselves also contain a type of lens…

IS vs non IS lens — Canon EF and EF-S Lenses in

Apr 07, 2011 · 70-200mm f/4 L IS lens vs the 70-200mm f/4 L without IS lens. I would like to buy one of these lens but before I do I wanted to know what’s the differents in using them, I will only be taking Landscape pictures and sometimes parks, with a (monopod) is the non-IS lens any good if people was to walk about in the background or birds fly about! or not. or is the IS lens better for this if this happens.

70-200 F/2.8L USM: IS vs. non-IS — Canon EF and EF-S Jan 24, 2008
Difference between IS and non IS lens? — Canon EF and EF Apr 13, 2007

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What the meaning of IS is: Canon SLR Lens Talk Forum

Oct 04, 2004 · at least for 35 mm specific lenses. But the 17-85 IS is actually designed for the smaller sensor, so I don’t know, I’m confused. Don’t be confused. Every EF/EF-S lens is marked with its “true” focal length, and every EF/EF-S lens focal length yields an angle of view comparable to a lens with 1.6x the focal length placed on a 35mm film camera.

what is an “IS” lens? | Yahoo Answers

Sep 01, 2008 · Add to that the fact that a lens is sharpest about 2 stops above wide open that puts you at about f/13. You need to add a LOT of light at f/13. You are talking full daylight.

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Canon Lens Abbreviations – Photography Life

EF-S and EF lenses can be mounted on EF-M lens mount through the use of appropriate lens mount adapters, but EF-M lenses can not be mounted on the EF mount. FD – this is the old manual focus Canon lens mount used before 1987.

Lens – definition of lens by The Free Dictionary

A transparent, biconvex structure in the eye of a vertebrate or cephalopod that is located between the iris and the vitreous humor and focuses light rays entering through the pupil to form an image on the retina. A similar structure in many invertebrates. Informal To make a photograph or movie of.

Lens | Define Lens at Dictionary.com

noun, plural lens·es. a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision. a combination of such pieces.

What is a Macro Lens? Everything You Need to Know as a

A macro lens has the ability to focus from infinity to 1:1 magnification, meaning that the size of the image in real life is the same size as it’s reproduced on the sensor.