Canon Life-Size Converter EF

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Canon Life-Size Converter EF

From the manufacturer

This optional accessory is designed to work strictly with the EF 50mm f/2.5 Compact Macro lens. Unlike typical life-size adapters, the Life Size Converter EF actually has optics that are optimized for high magnification when combined with the 50mm macro lens. Magnifications from 0.26x (approx. 1/4 life-size) to 1.0x (true life size) are possible, at increased working distances.

url to full description on Manufacturer's web site.
From Wikipedia

The EF 50mm f/2.5 Compact Macro is a relatively inexpensive macro lens with a minimum focusing distance of 23cm (9 inches) offering a maximum magnification of 0.5x actual size.[9] Reviewers describe the lens as having "decent"/"mid-level" build quality, with very good color and contrast, "absolutely negligible" distortion, very sharp after f/4 and peak performance at f/5.6. However, auto-focusing is relatively slow and noisy.[11][12]

The maximum 0.5x magnification means this lens is more suitable for photographing documents, products and objects at least 5cm (2 inches) wide than small insects etc. The outer barrel is grooved to accept Canon's MR-14 ring flash which can be used as the principal light source for close-ups or as on-axis fill lighting for portraits. The six-blade diaphragm provides reasonably good out-of-focus blur (bokeh) for portrait work.

First introduced in 1987, it is the oldest lens in Canon's current lineup (as of January 2014) that is still available new.[13] The lens is constructed with a plastic body and metal mount, and features a distance window with infrared index and magnification markings. The optional Life-Size Converter EF[14] adapts the lens to produce a maximum magnification of 1:1. Attaching the converter increases the lens focal length to 70mm, reduces the maximum aperture to f/3.5 and limits the focal range. Magnification markings for the converter are shown on the (extending) inner lens barrel.

url to full article on Wikipedia.
MSRP US$ Aperture (large) f/
Announced Magnification 1.0x
Length 35mm Minimum focusing distance m
Weight 160gr Focal mm
Filter diameter mm Diaphragm blades
Manufacturer Canon Color Black
Mount Type Canon EF Category Specialty
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WEathersealing, CIrcular aperture, FUll time manual focus, STabilization, FT:Filter threads, COnstant minimum aperture,
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2015-03-15T06:36:07+00:00