|FD||The lens is designed for Canon 35 mm film SLR cameras and is not compatible with Canon EOS digital SLR cameras due to shorter flange focal distance of Canon FD mount.|
|L||Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.|
|Maximum format:||35mm full frame|
|Diagonal angle of view:||16.4°-4.1° (35mm full frame)|
|Lens construction:||19 elements in 15 groups, including:|
|Number of blades:||9|
|Closest focusing distance:||300 cm|
|Maximum diameter x Length:||Ø123 x 468 mm|
|Filter size:||34 mm (rear)|
Design and Features
This is a super telephoto lens with a focal length of 600mm telephoto and a 4x zoom ratio. This is the first SLR camera zoom lens in the world to use an inner focusing system for focal adjustments, making this super telephoto while keeping the overall lens structure compact.
Despite being a super telephoto zoom lens, it boasts excellent operability such as zooming and focusing performed using a single knob, a handle as the role of focusing distant objects while also being useful for handling, and a one-touch revolving mechanism.
With regard to optical performance, an original positioning of the optical system and the effective use of UD glass lens elements with low dispersion and a low refractive index reduce the size of the optical system while compensating for various aberrations, allowing sharp images with high-contrast to be obtained at all focal lengths.
2) On a tripod