By jsquare from Suburban Chicago on 7/10/2008

I use this with a macro lens on focusing rails with a tripod. The ease to switch to vertical is a real plus.

[2 of 2 customers found this review helpful]

By crisp from New Zealand on 2/12/2007

poor design makes this difficult to use especially when in a hurry to change positioning on a tripod. The ring is not locked onto the lense and is very stiff to rotate and often falls out of the housing

[2 of 3 customers found this review helpful]

By Gerry from Long Island, NY on 2/12/2007

I love len's with rings. As an avid tripod user, it allows me to switch from vertical to horizontal images with a minimum of pain. When I receintly bought the Canon Macro Lens [...], I also ordered the ring [...]. The ring does not turn smoothly as the rings on my other Canon and Sigma lenes do. I think plastic is great when used properly. It does not fit this application as used. Advice from a retired product development engineer. If you want a short Macro, try some other manufacturer. In most cases I have gone back to my old 180 Macro. Its a pleasure to use and keeps me out of the flower beds.