Overview:
- Canon Close-up lenses are for quick and easy close-up
photography
- The close-up lens is screwed on to the front of a lens like a
filter
- Close-up lenses 250D and 500D have two achromatic elements to correct
chromatic aberrations
- They do not degrade the high optical performance of EF
lenses
- Close-up lens 500 has only one element, making it more affordable.
- The 250D is suited for lenses with a focal length anywhere
from 30 to 135mm
- The 500D and 500 are geared for lenses with a focal length
anywhere from 70 to 300mm.