Oil on the aperture blades in Mamiya-Sekor-C 1:2.8 f=45mm
There was A LOT oil on the aperture blades in this Mamiya-Sekor-C 1:2.8 f=45mm, but it's not that hard to fix. Just REMEMBER to set small mark's, so the aperture is correct again when you assemble the lens again. I use Isopropylalcohol 99% to clean the aperture system.
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Sticky aperture in Mamiya-Sekor-C 1:4 f=150mm (oil on the blades)
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Mamiya Sekor Mod Stream
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Sticky shutter (1.second problem) in Hasselblad Planar C 1:2.8 f=80mm T*
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Something is jamming GPS over Europe. Here's what we found
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MAMIYA SEKOR C 45mm F2.8 N前玉分解失敗！レンズ後ろ玉クモリ清掃！マミヤDisassembly
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Working with Mamiya-Sekor C 1:2.8 f=80mm Sticky aperture blades and Stiff focus ring PART 1
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Working with Mamiya-Sekor C 1:2.8 f=80mm Sticky aperture blades and Stiff focus ring PART 2
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Repair Project #5 - Mamiya Lens
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