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. While you will loose a f-stop or or two using this adapter I have still made many photos that paid for this accessory many times over.
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
Summary: I am THRILLED with this lens's capabilities and the pictures it does. I test shot a corner of a window to determine if it would be good for my insect shots that I like so well. I bought this add-on converter and am thrilled to have added this and the 50mm lens of these necessary items for my set-up.
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. As a working pro, I would recommend this adapter to any canon user of their macro lens as a "must have".