Thursday, 18 September 2014

Macro Lens

Macro Lens


Shallow of depth field

Macro lens is extreme close- up photography, usually of very 
small subjects, in which the size of the subject in the photograph is greater than life size. Macro photography (or photomicrography or macro-graph, and sometimes called macro-photography.

Alice through the Macro Lens [2012] 
The ratio of the subject size on the film plane (or sensor plane) to the actual subject size is known as the reproduction ratio. Likewise, a macro lens is classically a lens capable of reproduction ratios greater than 1:1, although it often refers to any lens with a large reproduction ratio, despite rarely exceeding 1:1.1.

Today, the term 'macro' is more widely used to describe equipment with some sort of close-focusing capability, and lenses with up to 1:4 magnification ratios (quarter life size) are often billed as having macro functionality.

Dedicated macro lenses are not cheap ranging from £649.99  for a sigma 05mm f/2.8 EX DG OS HSM and for a Samsung silent focusing available for around £530 but they are optimized to operate at closer than normal distance.


    

Bibliography 

http://www.digitalcameraworld.com/2013/08/23/what-is-a-macro-lens-magnification-minimum-focus-distance/

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