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Manufacturer
MAMIYA SEKOR-C 645 / Speedboosted (GL Optics MK-V) – 8 Lens Set / FF
Keynotes
  • Full-Frame Coverage – Originally designed for medium format, now optimized for full-frame cinematography.
  • Speedboosted Optics – Enhances light transmission and sharpness while maintaining vintage character.
  • Fast Apertures – Includes lenses with T2.0–T4.0, offering excellent low-light performance.
  • Smooth Focus Roll-Off – Delivers cinematic depth with natural transitions between focus planes.
  • Classic Mamiya Optical Design – Preserves the rich contrast and organic rendering of the original lenses.
  • Rehoused by GL Optics – Modernized mechanics with PL mount compatibility for professional cinema cameras.

Please contact us for questions:

800.941.2446

Description

MAMIYA SEKOR-C 645 / Speedboosted (GL Optics MK-V) – 8 Lens Set / FF

Gl Optics Rehoused Vintage Mamiya Sekor-C 645 Speedboost  LPL Mount Full Frame

Product Content
FormatFocal LengthApertureClose FocusFront DiameterWeight (lbs)Physical lengthFilter Thread SizeMount Type 
Full Frame17mmT3.59"110mm3.354.2"-ARRI LPL 
Full Frame24.5mm T2.915"110mm3.104.2"-ARRI LPL 
Full Frame31.5mmT2.310"110mm3.454.75"-ARRI LPL 
Full Frame38.5mmT2.312"110mm3.204.75"-ARRI LPL 
Full Frame49mmT2.219"110mm3.104.75"-ARRI LPL 
Full Frame56mmT2.319"110mm3.054.75"-ARRI LPL 
Full Frame77mmT2.22'9"110mm3.204.75"-ARRI LPL 
Full Frame105mmT2.23'3"110mm4.156.35"-ARRI LPL