Hi all. I know two landscape photographers personally who use them. One uses the Singh-Ray version and another a Heliopan, and have not found any of the inconsistencies mentioned in the review David listed. Perhaps the quality of the filters has something to do with that. You get what you pay for, perhaps
I have been thinking of getting one, but I need 77mm. OUCH. I have tried two polarizing filters in the distant past, but found a pretty good color shift, very blue. But with digital and RAW and white balance, maybe that is not a problem and you might try two filters. However, they get quite thick and could vignette pretty badly. I should try it again. I have a thin B+W and a nice Heliopan I could put together and see what happens.
Aram-----Original Message----- From: David Young
Sent: Wednesday, March 20, 2013 7:05 AM To: leicareflex@xxxxxxxxxxxxx Subject: [LRflex] Re: the ND Fader Filter? Part Deaux... Xavier! I hit "send" to soon. In another review of the SRB VD filter, they say;
A variable ND is two sheets of polarising filter mounted in a filter ring. The front sheet rotates and the rear stays still and by turning you reduce light transmission. Considering all this, the filter is surprisingly slim and only weighs 40g.
This confirms my theory of how they are made and work. However, the illumination test in the review shows that there are some substantial differences in evenness. See: http://tinyurl.com/d7u6m9gThe unevenness of exposure, especially when at the darkest settings, makes me
wonder about the wisdom of the idea, as opposed to some stacked, standard ND filters, which may have some distortion (in lower priced units) but at least the illumination should be even. Still, at the low cost, one might be worth a try! David.-------------------------------------------
Dear Flexers On Fleabay, I've come across a product named 'Fader ND2 ND400' It's obviously a filter made of two parts rotating with each other such as a a Polarizing filter. This Fader has a scale and an index to match the scale, every mark does a ND ponderation. Who has tried it, any good? Thanks for the input. #----------------------------------- From : Xavier F. BILLE mail : hot_billexf@xxxxxxxxxxx Maisons Alfort - France
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