Digital BW, The Print

Hi Paul

Finally got a chance to look at this.  I can use Eye One Share to take an
ambient light reading of my screen (using Evaluate -> Light) but again the
results are just given in terms of lux and colour temp.  Basically a 100%
black square on my monitor is 6 lux measured at the face of the display.
(The amount of light measured at eye ball distance would of course be less
according to the inverse square principle.) I have searched the web for a
way to convert this to Lab's L but most of the hits are very very technical
in nature - way over my head.  I also sent a question to Gretag support so
we'll see what they say.

Thanks

Steve  

> From: "Paul D. DeRocco" <pderocco@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sun, 10 Apr 2005 10:37:08 -0700
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] Matching Monitor and Print
> 
> 
>> From: Steve Kale [mailto:stevekale@...]
>> 
>> Unless I am mistaken the only way to do an ambient light check is
>> as part of
>> making a display profile and in that case it just gives the
>> reading in terms
>> of colour temp K and illumance lux.
> 
> Which software do you have? If you have Eye-One Share, there's a tool that
> lets you measure incident light. I think it's under Evaluate (e) in the top
> left corner, then Light, but my memory could be off. It lets you click the
> button on the spectro to take a reading, and then examine its data in
> various ways, including, if you want, storing the whole 36-band data in a
> text file. But as long as you can get some sort of brightness out of it on a
> linear scale, that's all you need. (I'm not at the computer that has all
> this installed at the moment.)
>