File:Mamiya 645 35mm Lens.jpg - Wikimedia Commons
Mamiya 645 - Wikipedia
Focal length comparison: 645 format vs 35mm format - Tangents
Mamiya Sekor C 80mm f/2.8 N Manual Focus Lens for 645 {58} at KEH Camera
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Focal length comparison: 645 format vs 35mm format - Tangents
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Amazon.com : Mamiya 645 Af 150mm F/3.5 Lens : Camera Lenses : Electronics
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THE FASTEST MEDIUM FORMAT LENS EVER CREATED - Review Dave Gallagher: Medium Format Talk Forum: Digital Photography Review
Used Mamiya Sekor-C 35mm f/3.5 for 645 System - Good | Used & Trades | Mamiya at Unique Photo
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645, 6x6 and 6x7 equivalent focal lengths (35mm) | Medium Format (120/220 film only) | Flickr
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TLS Mamiya 645 Rehousing - Newsshooter
