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August 8th, 2006, 09:35 AM
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Major Player
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
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what are the f-stop equivalents on the ND w/20x lens?
i'm purchasing a matte box, and what to purchase some filters, and some more NDs, graduated and non-grads, but i don't want to duplicate what the 20x lens comes with... the lens ND markings read: 1/6 & 1/32
1/6 = less light & 1/32 = even less light but when everyone else markets their filters: ND ---- f-stop reduction .1 ------ 1/3 .2 ------ 2/3 .3 ------ 1 .5 ------ 1 2/3 .6 ------ 2 .9 ------ 3 i get the math .1 = 1/3stops, thus the greater the ND number - the less light allowed... but by the 20X lens markings, 1/32 < 1/6 (mathmatics) so this would mean the 1/32 should let in more light - it doesn't... so can someone explain to me the markings or offer their f-stop equivalents... thanks, Lonnie
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Lonnie Bell mamas boy productions Las Vegas, NV Last edited by Lonnie Bell; August 9th, 2006 at 07:55 AM. |
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