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koji kawakami | profile | all galleries >> Lens Modifications >> Minolta MC Rokkors to EF-mount conversions tree view | thumbnails | slideshow

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Minolta MC Rokkors to EF-mount conversions

This page illustrates how to convert Minolta MC ROKKOR-PF 58mm F1.4 lens to EF mount,
and my way of modification for MC ROKKOR-PF 85mm F1.7 to EF mount too. For Minolta
MC ROKKOR-PG 58mm F1.2, it is in an almost identical way as shown in MC PF 58mm F1.4's.
PF58m_1: Eight screw MC mount
PF58m_1: Eight screw MC mount
PF58m_2: Mark long screw positions
PF58m_2: Mark long screw positions
PF58m_3: SR mount with a spacer
PF58m_3: SR mount with a spacer
PF58m_4: Disassemble mount and its spacer
PF58m_4: Disassemble mount and its spacer
PF58m_5: Save the parts safely
PF58m_5: Save the parts safely
PF58m_6: The lens without the mount
PF58m_6: The lens without the mount
PF58m_7: Don't loose a ball beaing for F-stop
PF58m_7: Don't loose a ball beaing for F-stop
PF58m_8: File down aperture ring tab
PF58m_8: File down aperture ring tab
PF58m_9: Mark long screw holes (not needed)
PF58m_9: Mark long screw holes (not needed)
PF58m_A: Titanium coated drill heads
PF58m_A: Titanium coated drill heads
PF58m_B: Mark hole positions on M42-mount
PF58m_B: Mark hole positions on M42-mount
PF58m_C: Make cone shape dent for screw head
PF58m_C: Make cone shape dent for screw head
PF58m_D: File down alminium spacer (not finished yet)
PF58m_D: File down alminium spacer (not finished yet)
PF58m_E: Temporary assembly of the new mount
PF58m_E: Temporary assembly of the new mount
PF85m_1: SR-mount of PF 85mm F1.7
PF85m_1: SR-mount of PF 85mm F1.7
PF85m_2: Take out silver cover/spacer
PF85m_2: Take out silver cover/spacer
PF85m_3: SR-mount base and possible EF-mount base
PF85m_3: SR-mount base and possible EF-mount base
PF85m_4: Measure the thickness of unwanted part
PF85m_4: Measure the thickness of unwanted part
PF85m_5: Thickness is ~1.4mm
PF85m_5: Thickness is ~1.4mm
PF85m_6: Install a spring to control aperture
PF85m_6: Install a spring to control aperture
PF85m_7: Detail view of new linkage
PF85m_7: Detail view of new linkage
PF85m_8: Spacer filed down
PF85m_8: Spacer filed down
PF85m_9: EF-mounted
PF85m_9: EF-mounted
Completed
Completed