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Old Jan 10, 2011, 1:38 AM   #1
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Default Which ND gauge ?

Hi all I was wondering which ND filter would do right for me and my T2I.. would the nd8 be too much, I just want to blur water and the illusion of motion when people are walking.
Which would be better in your opinion.
Thank you
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Old Jan 10, 2011, 11:17 AM   #2
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One won't do.

In daylight at iso100 the sunny rule tells us you'll usually be set to approx 1/125 at f/16. f/16 will give diffraction, so let's change to f/8. equiv exposure means 1/500. Depending how much you want to blur the water and depending on how fast it's flowing you might want to start experimenting with 1/30 second exposure.
That's 4 stops. The nd8 gives you 3 stops. so get an nd4 and an nd2 also and you'll be able to fine-tune your shutter speed to produce the result you want. some get good results with adjustable nd filters but i've read here and there that the quality suffers. i don't really know tho.

stacking nd filters may produce vignetting. watch for that. i use cokin so i don't need to.

i use nd at night as do others to make people blur or even disappear.

some more info here:
http://www.dslrtips.com/workshops/Ho...re_water.shtml
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Old Jan 10, 2011, 11:26 AM   #3
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bw nd 3.0 expensive, but will blur it out for you in bright daylight. It will give you 10 stops
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Old Jan 10, 2011, 11:28 AM   #4
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Also what lens are you planning to use it with
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Old Jan 10, 2011, 11:44 AM   #5
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I bought a Hoya set ND 8, ND 4 and ND 2. At the time it cost me $100. Now you can get the set for $139 or so. May be not the top of the line, but nice glasses anyway.
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Old Jan 11, 2011, 7:09 AM   #6
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Thanks guys, I grabbed 2 Hoyas ...nd4 and nd8 for 6 bucks on amazon...lol I know I know 6 bucks but hey gonna try them..lol
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Old Jan 11, 2011, 11:07 AM   #7
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Quote:
Originally Posted by wagaboo View Post
Thanks guys, I grabbed 2 Hoyas ...nd4 and nd8 for 6 bucks on amazon...lol I know I know 6 bucks but hey gonna try them..lol
Good price.
I'll also check them out.
Do you have link?
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Old Jan 11, 2011, 11:36 AM   #8
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Deleted my cookies but look on amazon theres still some there also grabbed a lens hood and remote for like 3 dollars
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Old Jan 11, 2011, 11:43 AM   #9
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that's not bad, you got a 2 stop and a 3 stop ND filter. And Hoya is a good filter company.
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Old Jan 12, 2011, 7:20 AM   #10
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Quote:
Originally Posted by shoturtle View Post
Also what lens are you planning to use it with
Im not sure on that one which in your opinion would work better ? 18-55mm OR 55-250mm
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