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

Model #2585A001

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Canon 2585a001 1
Canon 2585a001 1
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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
Expert Reviews
The digital picture.34755376
30 September 2013

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.

User Reviews
B h photo.34921152
17 May 2018

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.

B h photo.34921152
29 March 2018

Excited to receive my 82mm Circular Polarizing Filter. Can't wait to shoot with it.

B h photo.34921152
29 November 2017

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.

B h photo.34921152
11 November 2017

Omce again, Canon yweaks an accessory my a milimeter or two to require purchase of a new filter holder or polarizer. Really?

B h photo.34921152
20 June 2017

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.

B h photo.34921152
16 May 2017

Performs as described. Always a positive experience shopping at BH

B h photo.34921152
27 February 2017

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.

B h photo.34921152
25 August 2016

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.

B h photo.34921152
30 June 2016

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.

B h photo.34921152
23 April 2016

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.

Product Highlights
  • Makes a Blue Sky BLuer
  • Enhances Clouds
  • Minimizes Reflections
  • Rotating Filter Ring
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