 Alex T. Mizuno |
Where to get and how to use high factor Grad ND? I have screw-in type 2 stop graduated ND filters, but I don't seem to be able to find a screw in type when it comes to higher factor than 2 stops. For higher factor grad NDs such as 3 stop Grad ND filters, where can I buy those? And do I need a filter holder for those high factor grad NDs? I'd appreciate any information.
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Bob Cammarata |
I don't know what thread size you have but B&H has an extensive inventory of .9 (3 stop) round filters in stock and others which are special order. You can see a bunch at this link and scroll through to find your size. There's also the option of stacking filters to decrease light entering the lens but this process may cause vignetting.
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Alex T. Mizuno |
Thank you very much Bob! You're right, B&H has an extensive stock of 3 stop grad ND filters. Right now, I'm using 67mm thread and 52mm thread size. Seems like B&H is a good bet. Thank you again!!
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W. |
Hi Alex, if you stack ND filters you get a multiplied effect: a 2 stop ND filter and a 4 stop ND filter make an 8 stop ND filter. So if you really want to fumble with stacked, physical filters on location, and schlepp all that gear around (including a tripod!) have a look at the Cokin system (www.cokin.com), which accommodates stacking better than a screw-in system. Have fun!
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- Ken Smith Contact Ken Smith Ken Smith's Gallery |
If you go the Cokin route, I highly recommend you look into Sing-Ray filters. They make use of the Cokin mounts. Many folks just hand hold them in front of the lens. http://www.singh-ray.com/grndgrads.html
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Alex T. Mizuno |
Hi W and Ken, I really thank you both for the valuable information. I have checked those links you suggested. Cokin might be the way to go. In fact, I have been really annoyed by vignettes from using screw-in filters. I get vignettes even from a single screw-in filter. Sing-Ray has prices but Cokin does not. To buy Coking products, should I go to a place like B&H?
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- Ken Smith Contact Ken Smith Ken Smith's Gallery |
Yes, any reputable on-line store will have the cokin products. But, perhaps Sing Ray is pricey for a reason...either way, you have more flexibility with that kind of filter versus screw-on...you take control for where the break point is...Now, if you get Sing-Ray, my recommendation is the 3-stop soft...
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W. |
"I get vignettes even from a single screw-in filter." If you must use a screw-in filter you may want to look for 'slimline' filters, which have a low/thin profile that may be just enough to solve the vignetting.
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Alex T. Mizuno |
Ken and W, again, I thank you both for your wonderful inputs! Ken: Sing Ray is indeed pricey. I have to save up some money to buy their products. But, it's true I can enjoy more control with their filters. W: Thank you for the great tip! I look for slimline filters. Sounds like just what I need now.
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Michael Skelton . |
Was wondering why buy screw in filters? why not go with a system like Lee? You can change the level , angle and stack the filters. I been using them for years and love the flexibility they afford you. I keep the adapter rings attached to my lenses all the time and just pop on the filter holder as I need them.
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Alex T. Mizuno |
Hi Michael, thank you for the new info. I didn't know about Lee filters but I just checked them out. Like Sing-Ray, they are pricey but I guess they are more reliable than screw in type filters.
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