Astragon 135mm f/4.5

Astragon 135mm f/4.5 is a generic / regional brand 4×5 wide-of-normal LF lens at 135mm — at unusually bright f/4.5 aperture for an LF lens.

Key features

• Mount: Copal 0 shutter (1s to 1/500, X-sync at all speeds)
• Focal length: 135mm
• Maximum aperture: f/4.5 (notably bright for the focal length)
• Image circle: ~165mm at f/22 — covers 4×5 with limited movements
• Optical formula: Tessar-derived (varies)
• Multi-coating typical

Use case + rendering

The 135 Astragon f/4.5 is the budget bright 4×5 wide-of-normal — bright f/4.5 unusual for the focal length class.

Compatible cameras

• Toyo 45A / Toyo 45AII / Toyo 45G
• Cambo SC / Cambo Calumet 45NX
• Graflex Crown Graphic / Graflex Speed Graphic / Graflex Super Graphic

Related lenses

• Astragon 210mm f/4.5 — longer Astragon sibling