[argyllcms] Re: Projector calibration

On dimanche 13 janvier 2008, Roger Breton wrote:

> Did you calibrate and profile the light emitted by the projector or
> reflected on the projection screen?

As I said, both.

If we calibrate reflected light, we have to put the projector close to the 
screen to have enough light in the i1d2. So, when we put back the 
projector at the normal distance, we may have some little variation of the 
black/white level, don't we?

If we calibrate the light emitted by the projector, I think we are 
independant of the distance to the screen. Am I right? But then, we don't 
calibrate the screen...

We will have to calibrate another projector, in a large room, and will not 
able to put the projector close to the screen; so we will have to 
calibrate the emitted light.

Anyway, results are very good, and we didn't even make adjustement to the 
projector (we also used low quality calibration/profiling). So, I'm sure 
we can improve the result :o)

-- 
   Frédéric

   http://www.gbiloba.org

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