Table of Contents
GL Optics ZEISS Planar B-Speed 50mm T1.4
Summary
ZEISS B Speeds, renowned for their T1.3 aperture and cinematic legacy, have been re-engineered by GLO with a modern focus system for 300° rotation and improved accuracy. The design preserves their compact form while standardizing fronts and repositioning iris scales for ease of use. Leand heavy into the original guitar pik bokeh and/or optional circular iris upgrades to closer mimic their more expensive mark two and three counterparts, maintaining their iconic appeal for modern filmmakers.
Tech Specs
| Manufacturer | GL Optics |
| Series | Prime |
| Model | ZEISS Planar B-Speed |
| Focal Length | 50mm |
| Max Aperture | T1.4 |
| Min Aperture | - |
| Format | - |
| Image Circle | - |
| Minimum Focus | 1ft 2in |
| Focus Rotation | 330° |
| Iris Blades | 15 |
| Optical Design | - |
| Squeeze | - |
| Front Diameter | 110mm |
| Filter Thread | - |
| Focus/Zoom Rod | - |
| Native Mount | PL, LPL, EF, E |
| Data Protocol | none |
| Length | 82.5mm |
| Weight | 1.25kg |
| 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
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