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lens:glozeissbiotar58mmt2.1

GL Optics ZEISS Biotar 58mm T2.1

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Summary

The Carl Zeiss Jena Biotar 58mm f/2 and 75mm f/1.5, are classic examples of optical excellence from the mid-20th century. Developed initially in the 1930s and 1940s, these lenses are renowned for their sharpness and distinctive bokeh, making them highly sought after by both photographers and cinematographers alike.The Biotar 58mm f/2 is ability to produce images with a unique character, often described as painterly. This lens is particularly noted for its swirly bokeh and good contrast, which are preserved even in challenging lighting conditions.The Biotar 75mm f/1.5, on the other hand, is dubbed the “King of Bokeh” due to its outstanding ability to render out-of-focus areas with a creamy and dreamy quality that enhances the subject focus. This lens was first released in 1939 and has a rich history The Helios company later replicated the optical formula of the Biotar 58mm, leading to the creation of lenses like the Helios 44 series, which mimic some of the Biotar’s optical characteristics such as sharpness in the center of the frame and distinctive bokeh, albeit with some variations like less pronounced spherical aberrations.These Biotar lenses, with their classic design and distinctive imaging capabilities, continue to be a valuable addition to the toolkit of photographers and filmmakers who appreciate the unique aesthetic that vintage lenses bring to digital imaging.

Tech Specs

Manufacturer GL Optics
Series Prime
Model ZEISS Biotar
Focal Length 58mm
Max Aperture T2.1
Min Aperture -
Format -
Image Circle REF 45×25
Minimum Focus 0.4m
Focus Rotation 330°
Iris Blades 16
Optical Design -
Squeeze -
Front Diameter 110mm
Filter Thread -
Focus/Zoom Rod -
Native Mount PL, LPL, EF, E
Data Protocol none
Length 87mm
Weight 1kg
Body Telescope -
Body Material aluminum
Focus Drive manual
Iris Drive manual
Zoom Drive n/a

History

Country of Origin: -
Release Date: -
Launch Price: -
Design Revisions:

Service

Notes

Media

lens/glozeissbiotar58mmt2.1 [.txt] · Last modified: 2025-07-14 / 01:34:08 pm PDT by J