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January 18th, 2008, 07:54 AM
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#1 |
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Trustee
Join Date: Sep 2006
Location: Kent UK
Posts: 1,397
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2/3 Sensor Mult factor
Hi guys
Just a quick question someone may be able to clear up. With a 1/3 sensor the mult factor is 7.2 when using 35mm film lenses. So what is the mult factor when considering 2/3 chips? There mult be a formula I guess but I haven't been able to find anything? |
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January 18th, 2008, 08:14 AM
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#2 |
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Inner Circle
Join Date: Jun 2005
Location: Saskatchewan
Posts: 3,048
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Mat,
what a great question. sense it is twice as big would it cut it down to 3.6? Or does it reduce 7.2 by a third which makes it 4.824? Probably something totally different. Waiting to hear on this one too!!
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DATS ALL FOLKS Dale W. Guthormsen |
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January 18th, 2008, 10:04 AM
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#3 |
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Major Player
Join Date: Dec 2005
Location: Pincher Creek, Alberta Canada
Posts: 619
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Mat
I believe you divide the 35mm diagonal measurement by the diagonal measurement of the ccd being used to get the crop factor. eg 43.3(35mm)/11(2/3)= 3.9 eg 43.3(35)/6(1/3)= 7.2 Gordon Hoffman |
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January 19th, 2008, 06:59 AM
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#4 |
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Trustee
Join Date: Sep 2006
Location: Kent UK
Posts: 1,397
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Cheers Gordon, thats interesting. Am I being a bit dull if I ask where the ccd numbers have come from?
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January 19th, 2008, 05:43 PM
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#5 |
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Major Player
Join Date: Dec 2005
Location: Pincher Creek, Alberta Canada
Posts: 619
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Mat not at all. This dicussion has a link to a site that seems to agree with what they came up with.
http://dvinfo.net/conf/showthread.php?t=13433 Gordon |
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February 14th, 2008, 05:24 PM
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#6 | |
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Regular Crew
Join Date: Dec 2005
Location: Ankara, Turkey
Posts: 136
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Quote:
alkim.
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www.alkimmedya.com |
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February 17th, 2008, 08:25 AM
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#7 |
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Major Player
Join Date: Dec 2005
Location: Pincher Creek, Alberta Canada
Posts: 619
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Hi Alkim. I believe it's around 5.4.
Gordon |
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