Canon 2585A001 52mm Circular Polarizing Filter (Rear Drop-in)
Model #2585A001


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Front filter thread size | Not Applicable |
Type | Circular Polarizer |
Filter factor | Between 2.3 and 2.8 (approx. +1.3 stops) |
Rotating | Yes |
Size | 52mm (Rear Drop-in) |
Construction | ColorCore Glass |
Grade | Not Applicable |
Multi-coated | Not Applicable |
Application | Nature, travel, outdoor photography |
Front lens cap size | Not Applicable |
Color temperature | Not Applicable |
Effect | Removes reflections and increases color saturation without affecting the overall color balance |
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The circular polarizer filter is, by far, my favorite filter type. These filters are most commonly threaded onto the end of a lens. Because Canon's big white lenses have a huge front objective lens size, these threaded filters are not practical.
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A bit expensive but still a useful product application for the Canon telephoto lenses. Polarizing filters cant be counted upon to reduce glare without adjustment to address the source of the glare.
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Excited to receive my 82mm Circular Polarizing Filter. Can't wait to shoot with it.
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This 52 mm screw-in filter works well for Canon 500mm lenses. My Series 1 500mm lense came with a gelatin filter. This filter holder with a screw in glass filter can be cleaned better than the gelatin filter, and you can use other 52 mm glass filters with it.
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Omce again, Canon yweaks an accessory my a milimeter or two to require purchase of a new filter holder or polarizer. Really?
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control wheel is hard to get at when adjusting light. It is small does not protrude high enough to get a finger on. hides under the flash mount protrusion on front of on the camera. Poorly designed.
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Performs as described. Always a positive experience shopping at BH
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Very pleased with this purchase. Makes shooting over water or in the sky a manageable process. Slips in very quickly and retains image quality. Excellent item.
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A natural fit for a Canon lens. Fits on the 40mm as expected, and with the Canon lens hood , great protection. Does not decrease image quality as far as I can see.
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It's easy to use and I have no complaints. You get what you pay for. Feels tuff and durable. Step up or shut up.
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Before purchasing a super zoom 500mm lens I was very concerned about how I would tackle a polarizing filter but Canon has really made life easy with their Drop-In Circular filter easily accessible from the top of the lens and simple to change out for other Drop-In's such as a UV or gel.
- Makes a Blue Sky BLuer
- Enhances Clouds
- Minimizes Reflections
- Rotating Filter Ring