POV-Ray : Newsgroups : povray.binaries.images : Logarithmic exposure control sampler Server Time
14 Aug 2024 15:18:52 EDT (-0400)
  Logarithmic exposure control sampler (Message 1 to 3 of 3)  
From: Kevin Loney
Subject: Logarithmic exposure control sampler
Date: 23 Sep 2002 23:40:03
Message: <3d8fde93@news.povray.org>
I've been playing around with the 3.5 source and implemented exposure
control. it's still alittle buggy, but it's getting there slowly. I would
have preferred to use a slightly higher res but when it takes 2:30s to
render 75x75, keeping it small is probably the best bet. I'll likely add
color correction sometime tommorow.

note: exposure time is in seconds

--
Kevin
http://www.geocities.com/qsquared_1999/
#macro _(r)#if(r<12)#local i=asc(substr("oqshilacefg",r,1))-97;
disc{<mod(i,7)-3,div(i,7)-1,6>,z,.4pigment{rgb 10}}_(r+1)
#end#end _(1)//KL


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Logarithmic-Exposure.jpg


 

From: Daniel Matthews
Subject: Re: Logarithmic exposure control sampler
Date: 24 Sep 2002 06:20:14
Message: <12161241.tiyYp1pQeW@3-e.net>
Kevin Loney wrote:

> I've been playing around with the 3.5 source and implemented exposure
> control. it's still alittle buggy, but it's getting there slowly. I would
> have preferred to use a slightly higher res but when it takes 2:30s to
> render 75x75, keeping it small is probably the best bet. I'll likely add
> color correction sometime tommorow.
> 
> note: exposure time is in seconds

If you vary FStop then DOF must change too?


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From: Martin Magnusson
Subject: Re: Logarithmic exposure control sampler
Date: 24 Sep 2002 06:34:24
Message: <3D903FB0.2080909@frustratedhousewives.zzn.com>
I was surprised that the f1:1/8 and f4:1/1 images are not equally 
bright. Is that the case with regular cameras and film, too?

/ martin


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