Negative Positive
Title: too short for full lens extension
Review: The plastic Canon conversion lens adapter does work with add on lenses but it does not work with just a filter (Canon UV filter) and have the filter screwed in snug. If I do the lens hits the filter glass and immediately retracts and shuts down. I have to back-off the filter more than one full turn so that the lens does not hit the filter. I didn't notice this until after the return date so now I have a useless plastic thing. I have contacted Lensmate and they swear theirs works perfectly so I will buy theirs.
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