Re: Repetitive Calibration with Optical
Re: Repetitive Calibration with Optical
- Subject: Re: Repetitive Calibration with Optical
- From: "Bertho Boman" <email@hidden>
- Date: Sat, 11 Jan 2003 17:26:27 -0500
- Organization: Vinland
It is not a Spyder measurement problem since the readings are repeatable
and stable and there is a big difference between them. I can repeat the
whole procedure and get the same numbers plus/minus minor noise.
For example PreCal measures 90 cd/m^2 and OptiCal measures 86. = -4.4%
An other example: OptiCal measures 80.1 and the info printout from the
same measurement in OptiCal shows 82.5. = +3.0%
Something does not add up.
Bertho
----- Original Message -----
From: <email@hidden>
To: "Bertho Boman" <email@hidden>
Sent: Saturday, January 11, 2003 14:38
Subject: Re: Repetitive Calibration with Optical
>
>
Bertho
>
as far as seeing 3 different luninances if i just keep hittting the
take
>
reading button in precal my delta e changes from.078 to .156 and it
seems
>
to bounce around every time you hit it.
>
now i find that small difference but if i use my spectrolino instead
of the
>
spyder i get steady readings no matter how many times i hit the
button.
>
i feel like the software is good but i dont trust the spyder anymore,
the
>
differences you are seeing may be from the device and not a software
issue
>
i would uncheck the calibration enable box ,get your luninace around
95 and
>
30 for black and you should have no problem.
>
i not familiar with the PC,so i dont know where to tell you to look
but
>
make sure there are no other default monitor calibrators enabled.
>
this will hose your profile too.
>
good luck
>
john
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