RE: View booth issues
RE: View booth issues
- Subject: RE: View booth issues
- From: Roger Breton <email@hidden>
- Date: Sun, 21 Dec 2008 17:08:20 -0500
Of course, Andreas. Das ist richtig. Aber, technically, die EyeOnePro hast
eine 3.3 nm bandpass internally, but reporting is 10nm. Nothing we can do
abou that L
I dont doubt that there are many fine instruments on the market that meet
the 5nm requirements. But, despite its bandpass limitation, in my opinion,
the measurements made with the EyeOne remains useable.
Could you suggest other equally affordable spectral irradiance measurement
systems?
Im looking into the OceanOptics irradiance solutions at $3750 here:
http://www.oceanoptics.com/1108_promo.asp but I could never afford the fine
solutions offered by Dr Groebel UV-Electronik Gmbh, available here:
http://www.uv-groebel.de/pm__messgeraete.php or the Photo-Research
spectroradiometers or Bentham Spectroradiometers, or
, you get the picture.
MfG / Roger Breton
From: Andreas Kraushaar [mailto:email@hidden]
Sent: 21 décembre 2008 15:41
To: Roger Breton
Cc: 'Mike Eddington'; ''colorsync-users?lists.apple.com' List'; 'Roger
Breton'
Subject: Re: View booth issues
...
Using BabeColor CT&A's ISO-3664, I remember measuring something like 98 for
the CRI and a Grade B in the CIE012 test panel. Something I had never seen
myself in all the luminaires I measured with this software and my EyeOnePro
over the last four years.
ISO 3664 says (under 5.1 Spectral measurements):
The bandpass of the measuring instrument
(spectroradiometer) shall be 5 nm or narrower.
this rules out the EyeOne Pro (even if it very valuable in related issues
such as process control)
regards
Andy
PS: There is a bunch of reasons why this is needed.
Also note that not all softproofing is done with a
viewing booth/hardcopy comparison.
But all softproofing at the press is to be done with a view booth/hardcopy
comparison, Mike.
The hardcopy happens to be that of the printing press. But granted, there
are empirical tweaks used by the monitor profilers to help improve the match
between the view booth/harcopy that probably go beyond calibrating to plain
D50. But, to the best of my knowledge, they don't necessarily use white
point deviations. I still have to digest Chris Edge article presented in
Portland's CIC.
My .02 canadian cents that are now worth less than your .02 us cents :(
Regards / Roger
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