Re: New EyeOne ruler and soft case
Re: New EyeOne ruler and soft case
- Subject: Re: New EyeOne ruler and soft case
- From: Steve Kale <email@hidden>
- Date: Wed, 02 Nov 2005 14:43:58 +0000
- Thread-topic: New EyeOne ruler and soft case
Unless I am mistaken the steps involved in profile creation are rather
limited and straight forward. There are only a few things to screw up. One
just has to be careful to do those few things correctly.
Take monitor calibration. You need to decide on just three things: white
point, max luminance and gamma. The only fiddly bit (depending on your
monitor controls - woeful on Apple displays) is setting luminance. Then
it's just a case of ensuring that you place the device on the monitor
correctly and make sure your screen saver doesn't kick in. Other than that,
the question comes down to which package (device and software) does the job
better than others which is a whole different kettle of fish. I'm not
trying to be smart but there aren't many other variables to play with unless
you get into the realms of influencing what stimulus is sent to a device, ie
which sample observations are used to estimate the gamut. The latter would
likely require more knowledge than would be learnt in a 1-2 day seminar.
Printer profiling is more or less the same common sense. Make sure you have
good nozzle checks, make sure you don't colour manage the target when
printing it, make sure it has dried adequately before you measure it and
take care to ensure it isn't damaged beforehand, and make sure the
spectrophotometer settings are set correctly (for most users these can not
be changed). The only other variable is deciding which target to print
which again for most users is determined by the profiling package. The
biggest issue with printer profiling is the inability in many instances to
linearize the printer prior to profiling it so that sample stimulus-response
behaviour has a much better chance of accurately estimating the entire
behaviour. It would seem to me that the best way to improve printer profile
creation is to demand linearization ability from the manufacturers. Epson
provides Colorbase but I have been told by Epson Support that this is not a
linearization. (If anyone understands Colorbase properly I'd be interested
in what it really is doing.)
I suspect a seminar on profile creation will emphasize very simple
methodical steps known to many attendees already. Likely the more
interesting part of such a seminar would be educating people on when and why
colour management breaks down - providing a better understanding of the
limits of its ability and the notion that it is only as good as its weakest
link.
If the understanding expressed above is way off base I'd like to hear about
it.
> From: RS <email@hidden>
> Date: Wed, 2 Nov 2005 05:53:40 -0800 (PST)
> To: <email@hidden>
> Cc: <email@hidden>, <email@hidden>
> Subject: Re: New EyeOne ruler and soft case
>
>> It seems to me that many people, when they approach color management, they
>> learn just enough to make a profile, possibly doing a so-so job of it do
>> to incomplete knowledge; then they test the profile, find it lacking, and
>> from there they head straight for the profile editor without first
>> auditing their own profile-creation procedure.
>
> I don't doubt it, and that's exactly why an in-depth seminar like the kind
> Steve Upton mentioned would be immensely helpful in screwing down all the
> variables associated with profile creation.
>
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