Sep 18, 2009 · mamiya-sekor 50mm EF adapter for canon. I just got a lens that is labeled as a "Mamiya-sekor EF 1:1.7 f=50mm" As I'm new to photography I ...

The camera monitors a switch on the lens mount. Each lens has a tab for mounting. On auto lenses, the tab is longer, thus triggering the switch. The tab is ...

Forums: Lens: Canon ... Lelephoto 650-1300mm + auto teleconverter 2x Sigma + Canon EOS Rebel K2 = It Works! ... Digital Rebel + Kenko 2x MC4 + Sigma 500mm Mirror ...

The Sony VAD-PEA is a lens adapter designed for the Sony DSC-P92 and DSC-P72 digital still cameras. This lens adapter can be used to attach accessory lenses and ...

Finally, I decided to disassemble it and try to fix it. I have always wanted to see the inside of a Canon EF lens anyway. Step 1: Unscrew the three tiny screws ...

As indicated by their name, they are almost identical. They both offer zoom function in the 70mm to 200mm range, f/2.8 wide-open aperture for low-light work, ...

The auto-focus mechanism on this lens is based on Canon's micro motor. It is noisy and doesn't sound very smooth. In low-light and low-contract situation, it ...

Explains the purpose of stacking teleconverters and how to calculating focal length, aperture, and aperture diameter.

Jul 14, 2009 · DIY: Mounting Canon FD to Canon EOS. I have a lot of Canon superb FD lenses and want to use it on Canon EOS 10D body.

The instruction manual suggested that the adapter is to be attached to the lens first. Then the lens and the adapter are to be mounted to the camera body.