Pentax 6x7 Custom Lumicon 300mm F4 Projector Lens Samples: International Camera Museum : Blue Moon Camera and Machine
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Pentax 6x7 Custom Lumicon 300mm F4 Projector Lens Samples: International Camera Museum : Blue Moon Camera and Machine
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Roger Cicala: the difference between sample variation and a 'bad copy' (Part 2): Digital Photography Review
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