TLS MAMIYA SEKOR SPEED BOOSTER 645 SET OF 7

Includes:
TLS Rehoused Mamiya Sekor Speed Booster 645 25mm
TLS Rehoused Mamiya Sekor Speed Booster 645 32mm
TLS Rehoused Mamiya Sekor Speed Booster 645 39mm
TLS Rehoused Mamiya Sekor Speed Booster 645 50mm
TLS Rehoused Mamiya Sekor Speed Booster 645 57mm
TLS Rehoused Mamiya Sekor Speed Booster 645 78mm
TLS Rehoused Mamiya Sekor Speed Booster 645 107mm
2x Flight Cases

The TLS Rehoused Mamiya Sekor Speed Booster 645 (Set of 7) combines vintage 1970s Mamiya 645 medium-format glass with cinema-grade housing from True Lens Services (TLS). By integrating an internal 0.71x optical speed booster, these lenses increase exposure by roughly one full T-stop while expanding the field of view to comfortably cover Full Frame and VistaVision sensors. The result is a signature optical character—offering sharp center performance, organic contrast, smooth bokeh, and a gentle aesthetic edge falloff—paired with reliable, modern mechanical engineering.

Key Features:

Integrated Speed Booster Technology: An internal 0.71x optical speed booster increases overall lens speed by 1 T-stop (e.g., T2.3 across most focal lengths) and widens coverage for Full Frame / VistaVision sensors.
Complete 7-Lens Focal Coverage: Includes 25mm, 32mm, 39mm, 50mm, 57mm, 78mm, and 107mm primes to cover wide-angle to telephoto needs.
Precision Cinema Rehousing: Built by True Lens Services (TLS) with zero backlash, non-rotating front designs, and smooth cam-driven focus mechanics.
Standardized Front Diameters & Gear Positions: Features 95mm front diameters and uniform 0.8 MOD gearing for rapid lens swaps with follow focus systems and matte boxes.
Circular Iris Design: Upgraded multi-blade aperture mechanism delivers round, pleasing out-of-focus highlights and smooth bokeh.
Dual-Sided Markings & Robust Mounts: Clear, repeatable imperial/metric focus scales with LPL/PL mounting options for high-end professional cinema camera rigs.