Micro lens
Is a lens for microscopic photography. Not to be confused with a Macro lens.
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Micro lens
The Micro-Nikkor is the Nikon Corporation's name for their close-up 'Macro' lens.
(see Macro lens)
Microphotography
(see Photomicrography) ...
Micro lens
A lens for close-up photography; designed to focus continuously from infinity down to a reproduction ratio of 1: 2, or with a matched extension ring or teleconverter down to 1: 1; ...
Gapless micro lenses
First touted by Canon on the 50D, the EOS 550D's sensor has what are effectively gapless micro lenses, which significantly increases the efficiency of each pixel.
Macro and micro lenses are lenses which have additional elements which allow closer focusing. A standard 50mm lens can only focus up to about arm's length, maybe 30 inches.
MACRO or MICRO LENS
Macro Photography Equipment for Beginner - Macro Lens ...
Subject shot at 1:1 reproduction ratio (life size on film) with a 105mm Micro lens and PK-13 extension tube and Nikon F4.
8 inches away with the Nikon 60mm micro lens, or 5.5 inches away with the 105mm micro, or an impressive 10.2 inches away with the 200mm micro.
Just ask any venomous snake or tarantula photographer if you're curious about this rare 70-180mm Micro lens. The Nikkor is working at its sweet spot, while the Canon lens is at the end of its focus range.
Micro Lens For most purposes, a micro lens is another term for a macro lens. Both terms indicate extreme close-up capability; macro and micro lenses produce half life-size (1:2 reproduction ratio) to life-size (1:1 reproduction ratio) images.
Yes, extension tubes work well with a macro/micro lens. You can move so close to the subject that you might not be able to focus (manually, of course) at first.
@mick boyd: Unlike other lens types, all true macro/micro lenses are of great quality. I bought a Tokina 100mm macro lens for Canon on eBay last year. Very sharp shots from that lens. Great build quality and the focus ring is fantastic.
I currently use a Canon EOS 40D with 50mm, 100mm and 200mm Nikkor-Micro lenses with an EOS adapter, an Arca-Swiss ballhead and an older Gitzo Reporter tripod with a removable center column. I also have an EZ550 flash with an off-camera cord.
I have it configured for 1 SLR with the Nikon AF 24-50 mm zoom lens (3 inches long) plus my Nikon AF 70-300 mm lens (over 6 inches long) and the Nikon 100 mm micro lens - and 5 - 4 smaller lenses, plus the Nikon SB25 flash unit.
 See also: Photograph, Lenses, Image, Light, Camera
  
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