M42-EOS Lens Mount Stepping Ring(Black)

The M42-EOS Lens Mount Stepping Ring allows M42 mount lenses to be used with Canon EOS cameras. Diaphragm control is set manually, and macro rings and other accessories can be utilized.

• Compatible with M42 mount lenses from Zeiss, Pentax, Praktica, Mamiya, Zenit
• Manual diaphragm control
• Compatible with macro rings and other accessories
• Material: Metal
• Size: 65x65x8mm
• Note: Automatic diaphragm and auto-focusing functions will not operate correctly
• Requires stop-down mode for metering
• Can be used in manual mode or aperture priority mode