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Forums Lobby CAFÉ English Café (Public) topic #75988
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Subject: "RE: Aperture, Shutter, ISO, and Illumination Relationsh..." Previous topic | Next topic
spootdad   Portage, US  Registered since 27th Dec 2006 Sun 25-Sep-11 01:14 AM
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#17. "RE: Aperture, Shutter, ISO, and Illumination Relationships"
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Very interesting Hal. I like the "cue card" and this formula, although I do have two questions:
Concerning

"K = Metering Constant: = 12.5 for some reflected metering systems."

I assume that your comment means that K is industry dependent so not the same for Nikon as for Canon, and so on (I don't think you were referring to hand-held meters, although
I may be wrong). So, a) Where would you look to find this value for one brand vs another, and b) Is it reasonable to expect that it is essentially constant across the different cameras in a company's lineup?
Actually, a third question: Is this K determined from the physics of the problem or from another source?
Lee
From the rocking of the cradle to the rolling of the hearse, the going up was worth the coming down

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This is a hot, active topic!Aperture, Shutter, ISO, and Illumination Relationships [View all] , HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources. , Fri 09-Sep-11 01:01 AM
 
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... JonK Moderator Awarded for his high level skills and in-depth knowledge in various areas, such as Wildlife, Landscape and Stage Photography Donor Ribbon awarded for his generous support to the Fundraising Campaign 2014
09th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
09th Sep 2011
2
Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... TheMohaveKid
09th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
10th Sep 2011
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     Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... TheMohaveKid
10th Sep 2011
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     Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
10th Sep 2011
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          Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... jordivb
10th Sep 2011
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               Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
13th Sep 2011
11
     Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... spootdad
25th Sep 2011
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          Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
26th Sep 2011
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               Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... spootdad
26th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... blw Moderator Awarded for his high level of expertise in various areas
13th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... DigitalDarrell Team Member Founding Member of the Nikonians writer Guild. Author of most of the NikoniansPress books. Donor Ribbon awarded for his generous support to the Fundraising Campaign 2014
13th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
13th Sep 2011
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     Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... blw Moderator Awarded for his high level of expertise in various areas
15th Sep 2011
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          Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
15th Sep 2011
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               Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... Baaker Silver Member
21st Sep 2011
14
                    Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
21st Sep 2011
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                         Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... Baaker Silver Member
22nd Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... KolinP Silver Member Donor Ribbon awarded for his support to the Fundraising Campaign 2014
25th Sep 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... HBB Moderator Hal is an expert in several areas, including CLS Awarded for his excellent article contributions to the Resources.
26th Sep 2011
21
Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... Zevi Silver Member
03rd Oct 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... voyageurfred Silver Member
04th Oct 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... AreBee
08th Oct 2011
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Reply message RE: Aperture, Shutter, ISO, and Illumination Relationsh... Fovea Gold Member
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