Stiff mounting on EF body, but works as advertised.
Stephen S., Amazon
8 April 2015
Summary: The fit of the back of the EF mount onto the camera body was a bit tight / stiff (but not 'grindy' at least), or I would have given it 5 stars. Otherwise the adapter communicates with my EF 50mm f/2.5 macro. I'm happy.
This item is only for the Canon EOS 50mm f2.5 Macro 1:2 lense
Tim Marshall, Amazon
31 August 2013
Summary: This item was primarily designed for the Canon EOS 50mm f2.5 Macro 1:2 lens. This adapter allows you to amp your lens to a 1:1 or twice the image resolution. Be sure to add it to your lens before than mounting it to the camera so that your electronics are properly compensated for during metering.
Excerpt: The combination of the 50mm lens and the dedicated converter provide a wide range of photography options. The 50mm can be used as a very good standard lens but with the converter you almost match the performance of a 100mm macro lens
Excerpt: I use the Life-Size Converter in photographing small flowers and insects. The accompanying documentation is minimal. The 50mm macro lens has a minimum f-stop of f32. With the Life-Size Converter, my EOS-5D says the minimum f-stop is f57!
Pros: Durable, Easy to Use, Improves Function, Lightweight
Excerpt: I am a working pro (41 years) and an ex Nikon user. I switched to Canon three years ago and have pleased consistantly. This product lives up to Canon's description and lives up to my standards as well.