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

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

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

B&H # CACPDI52 MFR # 2585A001
Canon 2585A001 52mm Circular Polarizing Filter (Rear Drop-in)

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Product Highlights

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

You Pay: $169.95

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Canon 2585A001 overview

  • 1Description

Canon Circular Polarizer - Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.

If you're out walking on a lovely day - in the mountains or at the beach - and you want to get a fabulous shot of a cloud-filled sky or make the water seem more saturated, then a polarizer is the way to go. This filter is the best way to make the clouds stand out, increase or decrease the saturation of the ocean or increase or decrease the reflection off the water. You can also use this filter when shooting into glass or windows since it will, again, either increase or decrease reflections.

If you're shooting black and white and want to simulate a threatening storm, try throwing on a #25 Red filter. The vista will take on the appearance of an imminent, ominous storm.

Along with a UV or Skylight Filter, a polarizing filter should be a part of everyone's gear bag. It can turn a run-of-the-mill image into a stunning, creative photo by increasing color saturation.

Note: Circular polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems)

This filter eliminates ultraviolet rays to remove haze from outdoor shots as well as polarizing the light to remove reflections, and increase color saturation, without affecting the overall color balance
UPC: 082966431012
In the Box
Canon 2585A001 52mm Circular Polarizing Filter (Rear Drop-in)
  • One-Year Warranty
  • Table of Contents
    • 1Description

    Canon 2585A001 specs

    Filter Type Circular Polarizer
    Filter Factor 2.3 - 2.8 (1.2 - 1.5 Stop)
    Shape Circle
    Circular Size 52 mm
    Rotating Yes
    Front Accessory Thread / Bayonet Unthreaded
    Filter Material Glass
    Coatings None
    Packaging Info
    Package Weight 0.28 lb
    Box Dimensions (LxWxH) 3.8 x 3.8 x 1.5"

    Canon 2585A001 reviews

    2585A001 52mm Circular Polarizing Filter (Rear Drop-in) is rated 4.6 out of 5 by 34.
    Rated 5 out of 5 by from Very nice product I am using this in a 500mm F4 IS lens, and it is working as advertised. I saw some other reviews that were concerned that it had plastic threds / gears. It does, but since there is no real load on the components I don't really see a problem. If anything I would have liked to have seen the filter screwed into a rotating base so we could change to something like Moose Peterson's Warming Polariser, but I understand them not having a threaded component that could come loose and meander throughout the inner workings of the IS system... It is a good product, it works as advertised. Just my .02 worth...
    Date published: 2011-01-16
    Rated 5 out of 5 by from Does what it's supposed to... Some might think that the price for this polarizer is a little steep, but imagine paying for a polarizer that is almost 7 inches in diameter. :) And compared to the price of the lenses that use this filter, this is in the noise. The filter does what it is supposed to do and works well and if you need a polarizer for your big lens, then this is really the only choice you have. Since going digital, a polarizer is the only filter I ever use because it's effects cannot be duplicated in post-processing.
    Date published: 2011-01-10
    Rated 5 out of 5 by from Polarizer Solution This polarizer is the only polarizing solution for this lens as far as I know so you have to pay the price if you need polarization when using it. It's Only a 52mm gel so to me the price seems a little steep, however it is a proprietary item and it has special mechanics built into it. It works well. The dial moves the polarizer in small increments thus giving you fine and accurate control over the amount of polarization you may want. For some situations is might be a little slow to adjust. I was shooting whales with it this past week and wished for faster adjustment. Over all it is a good solution albeit not perfect. But what is?
    Date published: 2008-07-28
    Rated 5 out of 5 by from Must have accessory for outdoor shooting I have been using the drop-in polarizer in lieu of an ND filter in my 300mm f2.8 when I shoot outdoor sporting events such as soccer, softball and football. The polarizer does a great job of bringing very dynamic scenes into a range that my camera can handle without blowing highlights. I also like the colors I get with this filter; the sky is a deeper shade of blue and the grass is quite a bit greener. It also does a good job of reducing the glare off of water and other surfaces caused by polarized light; so I have been told anyway.....
    Date published: 2009-11-03
    Rated 5 out of 5 by from Useful Accessory A polarizer is a useful accessory for a super-telephoto, especially for distance shots such as landscapes of mountains because it can eliminate a lot of the stray light reflected from atmospheric haze and pollution. It works well on photos taken in a direction perpendicular to the sun but is not effective at reducing haze on photos lit from in front or behind. Because the front of super-telephotos do not accept screw on filters this is really your only practical option if you want to use a polarizer. To use simply squeeze the two buttons and lift to remove the OEM lens filter holder and insert the circular polarizering assembly the same way. There is small fingerwheel at the top of the assembly that rotates the polarizer as the wheel is turned and the effect is visible in the viewfinder. I found it took more rotations of the fingerwheel to rotate the filter than I liked but it's not a major problem. I think the cost is quite reasonable as the filter assembly appears to be built to the same high standards as Canon's line of super-telephoto lenses and the polarizer comes inside a handy and well made plastic case. I have not appraised the filter from an optical perspective but I assume it does not degrade the image quality as it replaces the clear glass filter that came with the lens.
    Date published: 2008-05-21
    Rated 4 out of 5 by from so far working well This is for my 800mm f/5.6 L. I've only had very limited use with it so far, but I can report back to you that it fits and functions well. I need to use it under more conditions to get a good handle on the strength of the polarization. The other thing would be the need to get a case or pouch for it that would fit both the polarizer and the default glass - because without that there is too much fumbling around with the plastic container that the polarizer comes in, even with both hands free. The lens itself is spectacular - need more experience with the polarizer.
    Date published: 2010-12-05
    Rated 5 out of 5 by from What Lenses Does This Work With? Canon 52mm Drop-In Circular Polarizer Filter (PL-C 52) Review (---------)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. Therefore, Canon provides a different type of circular polarizer filter option, the Canon 52mm Drop-In Circular Polarizer Filter.Read the circular polarizing filter review to learn how circular polarizing filters work. The Canon drop-in filter will provide the same effect, but it of course installs and functions differently.To install the drop-in filter, the standard filter holder must first be removed. A simple pinch of the drop-in filter release allows removal of the filter holder. The drop-in circular polarizer filter slides into the same slot and clicks into place. The process is very simple, though you will want to avoid getting dust and moisture into the filter opening or lens mount while no filter is in place.A small wheel exposed at the top of the filter allows easy rotation adjustment of the CP filter.This filter is compatible with Canon's big white IS and IS II lenses, including the Canon 300mm f/2.8 L IS II Lens, Canon 400mm f/2.8 L IS II Lens, Canon 500mm f/4 L IS II Lens, Canon 600mm f/4 L IS II Lens and Canon 800mm f/5.6 L IS Lens. Note that some earlier Canon non-IS lens models utilized a different filter size.Also note that this filter is available in version I and II models. According to Chuck Westfall (Canon USA), The paint color is the only difference. The II version was introduced specifically to match the new color tone of the IS II series super-telephoto EF primes from 300mm to 600mm that were announced in 2010. The version I model of course matches the older lens paint color.CP filters can, in some circumstances, dramatically improve the quality of your images. The Canon 52mm Drop-In Circular Polarizer Filter is your only option for getting this benefit from Canon's big white super telephoto lenses.
    Date published: 2016-01-26
    Rated 5 out of 5 by from The only solution for Canon long primes It's not possible to put a screw-on filter in front of any of the Canon fast telephoto primes (300mm and up), so a drop-in filter holder that is inserted in the light path towards the camera end is necessary. If you need a circular polarizer, you only have the choice of this drop-in, or you can use Canon's drop-in for threaded filters and add a good B+W or similar CPL to it. Although I would not normally buy a CPL from Canon, this one seems to perform on par with the high end filters available from the preferred manufacturers.
    Date published: 2008-08-13
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