QUICK LINKS:VideosSample ImagesCamera TimelineLink Directory
connect.dpreview.com geasrshop.dpreview.com
NewsReviewsBuying GuideSample ImagesArticlesCamerasLensesPrintersSoftwareForumsGalleriesChallenges
Forum indexOpen TalkChange forum

Proper Blind Exposure with a Gray Card

Started 6 months ago | Discussions thread
JDinOregon
JDinOregon
New Member • Posts: 5
Like?
Re: steephill, sjgcit, gl2k
In reply to Jack Hogan, 6 months ago

After staring at the DXO Ssat equation for a while I come up with;

Ssat=(78/q)*(N^^2/t)*1/Lsat   =  (78/q) *(L/k)*Ssat/Lsat  from  N^^2/t  = L*Ssat/k

thus

Lsat/L=78/(k*q)  or Lsat is 3 stops higher than the metered L value for q=pi/4.

Reply   Reply with quote   Complain
Post (hide subjects)Posted byWhen
Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Equal confusion, or not
aardvark7
6 months ago
Re: Equal confusion, or not
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
nikkorwatcher
6 months ago
Re: Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Pointless obsession
steephill
6 months ago
Re: Pointless obsession
MOD sjgcit
6 months ago
Re: Pointless obsession
nikkorwatcher
6 months ago
The Crux 2
Jack Hogan
6 months ago
there is no such thing as proper exposure
gl2k
6 months ago
steephill, sjgcit, gl2k
Jack Hogan
6 months ago
Re: steephill, sjgcit, gl2k
JDinOregon
6 months ago
Re: steephill, sjgcit, gl2k
Jack Hogan
6 months ago
Re: steephill, sjgcit, gl2k
JDinOregon
6 months ago
Bingo!
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
GMack
6 months ago
Thanks Mack
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
Mark Scott Abeln
6 months ago
Re: Proper Blind Exposure with a Gray Card
panos_m
6 months ago
The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
Detail Man
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
Detail Man
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
Detail Man
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
Re: The Crux of the Matter
panos_m
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
panos_m
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
panos_m
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Graystar
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
nikkorwatcher
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: The Crux of the Matter on Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: The Crux of the Matter
Mark Scott Abeln
6 months ago
Re: The Crux of the Matter
Jack Hogan
6 months ago
For Clarity
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
Mark Scott Abeln
6 months ago
Re: Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Why?
tko
6 months ago
Re: Why?
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
jon404
6 months ago
Re: Proper Blind Exposure with a Gray Card
jon404
6 months ago
Re: Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
jon404
6 months ago
Re: Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
Detail Man
6 months ago
Re: Proper Blind Exposure with a Gray Card
Jack Hogan
6 months ago
Re: Proper Blind Exposure with a Gray Card
Detail Man
6 months ago
Re: Proper Blind Exposure with a Gray Card
jon404
6 months ago
Re: Proper Blind Exposure with a Gray Card
Detail Man
6 months ago
Details, details ...
Jack Hogan
6 months ago
Re: Details, details ...
Detail Man
6 months ago
Re: Details, details ...
Jack Hogan
6 months ago
Re: Details, details ...
Detail Man
6 months ago
Re: Details, details ...
Detail Man
6 months ago
Re: Details, details ...
Jack Hogan
6 months ago
Re: Details, details ...
jon404
6 months ago
Re: Details, details ...
Jack Hogan
6 months ago
Proper Blind
Iliah Borg
6 months ago
Re: Proper Blind
Jack Hogan
6 months ago
Re: Proper Blind
Iliah Borg
6 months ago
Re: Proper Blind
Jack Hogan
6 months ago
Re: Proper Blind
Iliah Borg
6 months ago
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow
Search on dpreview.com
Not a member? Register
Featured news stories
dpreview.com
connect.dpreview.com
gearshop.dpreview.com
Editorial content
Product database
Community
About us   Write for us   FAQ   Feedback   Interest-Based Ads   Privacy   Legal
All content, design, and layout are Copyright © 1998 - 2013 Digital Photography Review All Rights Reserved. Reproduction in whole or part in any form or medium without specific written permission is prohibited.
Mobile site