Rating: Summary: A five-star concept for the seller Review: Singlet magnifying lenses for cameras in diameters like this used to cost little more than skylight filters of like quality. It seems that as machines have become more elaborate their users have become more gullible, even about childishly simple things like the value of a ten dollar closeup lens.
Rating: Summary: Canon 250D and 500D doublet achromat close-up lenses Review: The Canon 250D and 500D are doublet type close-up lenses which are corrected for chromatic abberation ("achromat"). They offer better performance than the less expensive singlet type lens. I have been happy with the performance of these lenses used on an EF 100mm/2.0, even when used stacked together for higher power (which Canon does not recommend).