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12-22-2010, 03:30 PM   #1
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Kenko NDX will come

I received a mail from Kenko today. The NDX filters will be available next spring (April or May).

At Photokina Kenko Co. Ltd. has announced a new adjustable neutral density filter model.


The Kenko Variable NDX filter offers an effect similar to that of a standard neutral density filter equivalent of ND 2.5 to ND 1000 brightness. Interestingly, Kenko claims that while the Variable NDX is based on polarizing filters, it won't affect color balance, glare, or reflections when used.

A couple of benefits are claimed for the design, as compared to traditional neutral density filters. With no need to stack multiple filters, there's no risk of vignetting. It's also conceivably easier to frame a scene with the Variable NDX filter set to its lowest strength, then adjust the filter strength by rotating the outer filter ring, rather than trying to attach a new filter to the camera without changing the framing.



12-22-2010, 04:19 PM   #2
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Should be interesting to see if this affects image quality. The inexpensive faderND you can get from amazon or fleabay affects even video quality according to Vincent LaForet...

Would love to have one of these if it doesn't...
12-22-2010, 05:09 PM   #3
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If it doesn't affect IQ this would be even better than manual controls in video. just select the aperture that you want and dial down the filter to force 180 degree shutter!

Ok, not better than manual control but, a decent compromise work around anyway.
12-22-2010, 06:40 PM   #4
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Makes sense, since it could be done before with 2 polarizing filters, to simply put that onto one filter.

12-23-2010, 05:46 AM   #5
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Interesting, but as it uses polarisers its going to be of limited use with wide angle lenses as it won't give a uniform effect unless there's some effect from crossed polarisers that I'm not aware of... With two polarisers it isn't going to be cheap, especially the 82mm fitting illustrated!

Personally I use square filters as I would usually have an ND grad in place as well if there's much sky in the frame, so I can slide the filter down after framing, but I'll still be interested to see how this actually works in practice
12-23-2010, 04:30 PM   #6
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are kenko filters any good? - was looking at the 77mm polarizer and for a circular polarizer of that size.......... well its dirt cheap 55 thats less than a sigma version for 49mm - as great as it sounds gotta wonder WHY its so much cheaper
12-23-2010, 04:57 PM   #7
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Kenko filters = Hoya filters. And Hoya, oh well, you know Hoya, don't you?
12-23-2010, 05:05 PM   #8
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hoya CP filter is like 3x the price!!

12-23-2010, 05:16 PM   #9
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Even in the Hoya offer, you have different kind of filters, from simple HMC to the Pro 1 Digital HD stuff. Check which kind of coating and if it's a HD or slim filter. It makes a difference. Gotta make a bit of research here!

Edit: I may be mistaken on this part : Kenko filters may only be distributed in Asia and sold as Hoya filters elsewhere. Anyway my recommandation would be a Marumi Super DHG.

Last edited by Zav; 12-23-2010 at 05:26 PM.
12-25-2010, 04:45 AM   #10
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Pro 1 is the only one ! THE best !
Some Hong-Kong sellers sells them cheap...
12-25-2010, 09:56 AM   #11
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Unfortunately you get what you pay for. I'm now a firm believer in the Hoya HD series of filters.
12-25-2010, 03:40 PM   #12
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That's not true, it's the same quality, but cheaper...
So you brake your Polfilter often...
10-27-2011, 01:29 AM   #13
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The Kenko Variable NDX is launched ! It has a brightness range of ND2.5 to ND1000 (usable on wide lenses to ND450).
For the moment only one seller and one size (77mm) on ebay for $562.38 !

It seems to be better than other because of a “polarizing effect cancellation” layer...
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