Re: Best ambient light/2
Re: Best ambient light/2
- Subject: Re: Best ambient light/2
- From: Sven Westerlund <email@hidden>
- Date: Mon, 20 Jan 2003 12:01:34 +0100
>
The 32 Lux are really dark, therefore my next question:
>
How is practically your ambient light set up ??
>
montespluga
Dear montespluga and others
As George Wedding write:
"Of course, the ISO isn't going to send troopers to storm your office if
it learns you
aren't meeting its requirements. But for organizations that build their
reputations on ISO compliance or have
such compliance written into their contracts, these requirements
matter."
Well, here4s my setup:
I baffle all windows and graypaint(60%refl) the enviroment. Thats the
workspace around the
monitor and printviewing, not the whole room. Hood on the monitor(s) and
a correct viewingbooth at 5000K/2000 lux.
At the other end of the room a larger place for viewing big prints under
5000K/2000 lux.
Dimmed 5000K light to 30-50 Lux falling on the monitor. Measured with
the monitor turned off.
If you dont have a Lux-meter you can use spotmeter or a camera and
measure a white paper.
I think these figures works:
ISO100-f4-1/4s=32 lux
ISO100-f11-1/30s=2000 lux
or take a look at Dr Tim Padfields somewhat complex article:
"Using a camera as a lux meter "
http://www.natmus.dk/cons/tp/lightmtr/luxmtr1.htm
When I work with imagecorrections, the booth is of course turned off.
Otherwise I let the sunshine in!
I think this make sense and there IS a big difference.
Sven Westerlund
Stockholm Sweden
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