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Canon 25mm f3.5  PDF Print E-mail
Lenses Canon Non EF mount
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Lens Summary

Overview

A super wide angle lens with a diagonal Angle of view 82°, developed based on Topogon (manufactured by Carl Zeiss, Germany. Angle of view: 100°. f/6.3). This lens has a unique optical system: a spherical lens element with a very high refraction index is used as the first lens element and a special optical glass lens element with the infinite radius of curvature is used as the rearmost lens element. This lens was the fastest lens in the world as a 25mm lens at the time.

Lens Specifications

Generic Lens Specifications
Lens Type: Prime
IS / VR / OS: None
Min Focal length (mm): 25
Number of Elements: 5
Element Groups: 3
Max Aperture: 3.5
Minimum Aperture: 22
Diaphragm Blades: 6
Closest Focus Distance (m): 1
Filter Diameter (mm): 40
Diameter at widest (mm): 48
Lens Length (mm): 15
Weight (g): 145
Release Date: December 1956

Details




Marketed December 1956
Original Price 32,500 yen (w/case)
Lens Construction (group) 3
Lens Construction (element) 5
No. of Diaphragm Blades 6
Minimum Aperture 22
Closest Focusing Distance (m) 1
Maximum Magnifcation (x) --
Filter Diameter (mm) 40
Maximum Diameter x Length (mm) 48 x 15
Weight (g) 145

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