[argyllcms] Re: How can I tell if I'm using my profile? (and other questions)

On Friday 31 October 2008 06:55:57 Florian Höch wrote:
> Graeme Gill wrote:
> > Adrian Mariano wrote:
> >> I'm not sure, but I suspect my device is not able to read the ambient
> >> light level.  (How can I tell for sure?)
> >
> > It's generally a feature of a particular instrument, but I think
> > that of the instruments Argyll supports, only the Huey and
> > Eye-One Pro rev D have ambient support.
>
> The Eye-One Display II should be able to do it too (the one I have
> works), but there might also be versions sold without the ambient light
> measurement cap which is needed for this.
>
> Regards,
>
> Florian

My EyeOne Display Lt also supports ambient light measurement.   

For those who do not have a color meter/photospectrometer that supports this I 
have seen web sites that have the formulas for using the an exposure meter 
(either in camera or hand held) to produce this information.  Probably the 
best thing to use would be a hand held exposure meter with an ambient light 
diffuser built in but a camera with a built in meter and a gray vard should 
also work.  It is a little harder to do because you have to hand calculate it 
but it can be made to work.

Hal

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