These 8 Bronica PG lenses are rated for infrared photography from real-world tests by IR photographers. Ratings are Good (7 lenses), Maybe (1 lens), Bad (0 lenses), and Unknown (0 lenses) for hot spots, the bright spot some lenses leave in the center of an infrared image, and follow the thresholds below.

IR Focal
Length		 Minimum
Aperture		 Lens Filter Weight Notes Images
Good 50mm ƒ/4.5 Bronica Zenzanon-PG 50mm f/4.5
KEH 		⌀95mm   Hotspot starts to appear at ƒ/16 in dark areas.  
Good 65mm ƒ/4 Bronica Zenzanon-PG 65mm f/4
KEH 		⌀72mm   Hotspot starts to appear at ƒ/16 in dark areas.  
Maybe 80mm ƒ/3.5 Bronica Zenzanon-PG 80mm f/3.5
KEH 		⌀72mm   Hotspot starts at ƒ/8, but it’s usable up to ƒ/22.  
Good 100mm ƒ/3.5 Bronica Zenzanon-PG 100mm f/3.5
KEH 		⌀72mm   No hotspot.  
Good 110mm ƒ/4 Bronica Macro Zenzanon-PG 110mm f/4
KEH 		⌀72mm   Very light hotspot at ƒ/32.  
Good 150mm ƒ/4 Bronica Zenzanon-PG 150mm f/4
KEH 		⌀72mm   No hotspot.  
Good 200mm ƒ/4.5 Bronica Zenzanon-PG 200mm f/4.5
KEH 		⌀82mm   No hotspot, but vignetting.  
Good 250mm ƒ/5.6 Bronica Zenzanon-PG 250mm f/5.6
KEH 		⌀82mm   No hotspot, but vignetting.  

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What the ratings mean. Hot spots usually appear as you increase the lens ƒ-number, so each rating depends on the lowest ƒ-stop where a hot spot shows and how severe it is, and the thresholds differ by sensor format.

  • Good: No hot spots, or one that starts at ƒ/11 or higher where diffraction impacts image sharpness.
  • Maybe: Contains a mild hot spot that starts at ƒ/5.6 or ƒ/8 and is correctable in editing.
  • Bad: A hot spot that starts at ƒ/4 or lower, or is hard to correct in editing.
  • Unknown: No data reported.

How reports are checked and rated

Bronica PG Lens Mount Adapters

Use an adapter to mount these lenses to many mirrorless cameras.

B&H - Bronica PG lens mount adapters