ND grad filters for a Sigma 10-20
- Thread starter Dman
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My old 10-20 was 77mm thread.
Newer ones appear to be 82mm.
http://www.warehouseexpress.com/buy-sigma-10-20mm-f3-5-ex-dc-hsm-nikon-fit/p1032429
Newer ones appear to be 82mm.
http://www.warehouseexpress.com/buy-sigma-10-20mm-f3-5-ex-dc-hsm-nikon-fit/p1032429
grumpybadger
Alan Rickman
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- Paul Beastall
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Don't know about 10-20 but I'm very happy with my Formatt filters
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- Wail
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for Formatt; excellent quality to say the least.The one you linked to is the new model with a constant maximum aperture of f/ 3.5 .. the older 10-20 had variable aperture and were, as you correctly noted, 77ø
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I think that's what I was looking at a while back, quite reasonable price wise from what I recall. I assume I can get a holder on ebay?
That's only with the 85mm filters isn't it?
You'll need the 100mm filters & holder if you want to shoot using multiple filters (multiple NDs or ND + CPL) at <= 12mm.
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There were vignetting issues with the 100mm filters on the old 10-20, if the new one has a larger diameter I can imagine there will be worse issues with it,
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Bumping this as I need to make a purchase. If I buy a cheap P series holder and adapter ring off ebay, will 85mm square filters be ok or will I suffer vignetting problems as mentioned above? I need the cheapest route to go down, but the holders on the Formatt site are pretty expensive.
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at 10mm you will need a wide angle holder - otherwise you will be able to see it in your photos - don't have that lens to help futher I'm afraid
Hi, i have the 10-20 with the 77m filter thread. I use the 85mm Formatt filters with Cokin P holders/adapters. The 85mm filter slots perfectly into the Cokin P Holder, the adapter ring is 77mm to screw onto end of lens then the holder slides onto that.
To avoid vignetting you will have to buy the cokin p wide angle holder unless you shoot above 12mm. If you would like to use multiple filters together you would have to go for the 100mm Formatts, not sure about the holders because i only use the 85mm.
Basically the 85mm on wide angle holder just clears the frame so obviously multiple filters at once would be seen easily, if i put my Hoya Pro-1 circular polariser (very thin) on then add the wide angle holder there is a little vignetting at 10mm but its clear by 11.
Hope this helps and makes some sort of sense
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I'm surprised the normal holder stops vignetting by 12mm on DX - on full frame it vignettes from about 28 mm or wider(with a 24-70), so I would of thought it would still be an issue throughout the lens' range?
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Hi, i have the 10-20 with the 77m filter thread. I use the 85mm Formatt filters with Cokin P holders/adapters. The 85mm filter slots perfectly into the Cokin P Holder, the adapter ring is 77mm to screw onto end of lens then the holder slides onto that.
To avoid vignetting you will have to buy the cokin p wide angle holder unless you shoot above 12mm. If you would like to use multiple filters together you would have to go for the 100mm Formatts, not sure about the holders because i only use the 85mm.
Basically the 85mm on wide angle holder just clears the frame so obviously multiple filters at once would be seen easily, if i put my Hoya Pro-1 circular polariser (very thin) on then add the wide angle holder there is a little vignetting at 10mm but its clear by 11.
Hope this helps and makes some sort of sense
Great, thanks. Are you happy with the results you get from just one filter?
Hi, i have the 10-20 with the 77m filter thread. I use the 85mm Formatt filters with Cokin P holders/adapters. The 85mm filter slots perfectly into the Cokin P Holder, the adapter ring is 77mm to screw onto end of lens then the holder slides onto that.
To avoid vignetting you will have to buy the cokin p wide angle holder unless you shoot above 12mm. If you would like to use multiple filters together you would have to go for the 100mm Formatts, not sure about the holders because i only use the 85mm.
Basically the 85mm on wide angle holder just clears the frame so obviously multiple filters at once would be seen easily, if i put my Hoya Pro-1 circular polariser (very thin) on then add the wide angle holder there is a little vignetting at 10mm but its clear by 11.
Hope this helps and makes some sort of sense
Makes perfect sense. Exactly the info. I was looking for too.
Cheers.
I started to doubt myself so i just tried the 10-20 to see how wide i could reach before the normal cokin p holder showed on frame and i was correct it was 12mm just but by 13mm nothing.
I starting using 2-3 at a time and circular polariser last year on my d40 with kit lens (52mm filter thread), trying for long exposure at sunset. Since moving to the 10-20 and now the D90 i have been more than happy with just one but i havent tried the longer exposure stuff, i did buy a ND1.2 (4 stop) hard and soft edge to make up for the fact i can only have one so this helps.
Glad to have helped, i remember trying to understand what was needed and what to buy mid summer but after you've got it you wonder what all the fuss was about lol