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Old Nov 6, 2009, 5:23 PM   #21
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I'd like to clarify that I was suggesting a Cokin Graduated Filter INSTEAD OF a polarizing filter. I was not suggesting a Cokin Polarizing Filter.
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Old Nov 6, 2009, 5:28 PM   #22
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I hope they're better than their Polarizer and UV Filters. Their UV filter also looks like it comes in at the bottom of the pack:

http://www.lenstip.com/120.2-article..._UV_72_mm.html
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Old Nov 6, 2009, 6:44 PM   #23
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It's not that they're better or worse, they're the only.

See http://www.cokin.com/ico3-p1-6.html
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Old Nov 6, 2009, 6:58 PM   #24
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Lots of manufacturers offer Graduated Neutral Density Filters (although I don't know about all of the different colors like Cokin offers).
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Old Nov 6, 2009, 7:20 PM   #25
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Cokin is mostly popular because of their filter holder system (so that you can adapt the same filters to a variety of lenses). I didn't realize their quality was that bad, though (before seeing those recent reviews), at least with the specific filters they tested. On the surface, it looks like lack of good coatings may be the primary problem with those.
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Old Nov 6, 2009, 7:50 PM   #26
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Perhaps, but if you want to deepen the color of the sky while shooting a landscape, and don't want the vignetting that comes with a CPL, what else are you going to use?
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Old Nov 6, 2009, 7:52 PM   #27
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Quote:
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Does that work for Circular Polarizing Filters too? I don't think so.
My friend, you are quite right. Linear polarizers placed on top of one another will cancel out enough light to make them nearly opaque. Which also makes them more effective at what they are supposed to do. But there are issues with linear polarizers. Here is a link for more info on polarizers:

http://www.luminous-landscape.com/tu...larizers.shtml

Incidentally, I have circular and linear polarizers. If I put the circular on top of the linear, very little light is blocked. But if I put the linear in front of the circular it becomes nearly black. Just the way the light goes through, I guess.
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Old Nov 6, 2009, 7:57 PM   #28
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... If I put the circular on top of the linear, very little light is blocked. But if I put the linear in front of the circular it becomes nearly black.
How cool is that?
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Old Nov 6, 2009, 10:02 PM   #29
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I'm not sure you want to know how that Cokin filter compares.

Lenstip did some tests recently on a number of Polarizing filters here:

http://www.lenstip.com/115.1-article...roduction.html

They later added a supplement test including some Cokin filters, since they were omitted from the first test group. Here's a Cokin filter that sounds like yours (they put it at the bottom of the list out of all filters tested, mostly because of vignetting, flare and streaking).:

http://www.lenstip.com/119.2-article...zer_72_mm.html
Wow I didn't know Cokin's that bad. The other circular polarizing filter I've been using for years is a Hoya. For the same number of years, too, I thought it was a Cokin. I only found out it's a Hoya when I unscrewed it from my film SLR to use on my 1.8 50mm lens. (Or should I get a new one, too? It's 20 years old. I remember back then it was cheaper than a Cokin but I could be wrong.)

Still, I can't spend $65 for a filter -- my wife will go ballistic. She is fond of my new hobby and has taken photography herself as a hobby, too, and I can probably handle her reaction should I go for a pricey filter (I know, I get the best quality), but sometimes I ask myself why I should.

Sorry, adamvk, for recommending a poor choice.
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Old Nov 7, 2009, 10:54 AM   #30
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Ok. So Hoya it is.
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