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Message

Re: neutralizing monitor black point .. One for CD Tobie.

2008-02-28 by Randy L

--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
>
> >>Hi CD, I bet one of the great benefits of working for Colorvision is
> getting to hang out in Europe a lot. Sure beats Maine this time of
> year huh?
> 
> Six times through customs in 10 days isn't quite a vacation... in fact, 
> the third time through customs into Zurich in the same week, they 
> decided to do a drug smuggler search on my briefcase... can't really 
> blame them.
> 

I remember back in the days when I was a press photographer and got to
go to Pittsburgh steeler football games and shoot from the sidelines.
After a few times I had had enough of all the driving and parking
hassles not to mention getting back through it all in reverse to be
back at the paper for deadline, so I let somebody else go. People
thought I was crazy but some times traveling to fun places is not what
it looks like from the outside.  
> 
> >You can use the colorimeter window and adjust from the values
> > that lists from near black patches defined there, though thats a bit
> > less convenient...
> 
> >>Where can I get (easy) instructions on this technique? IF you can just
> get me started I can figure out the rest.
> 
> No directions available, just a suggestion for doing it yourself. 
> Perhaps I can come up with some notes later... when I'm not sleep 
> deprived.


I understand.  Thanks for offering.

> 
> 
> >>Also when Spyder2 builds the profile does it color balance black point
> automatically? Is is supposed to? My Blacks still have a cast on some
> monitors after profiling.
> 
> First off, actual blacks don't have color casts. Its shadow tones that 
> might, and we balance and neutralize the grays down to the dark end, 
> which should, ideally, eliminate casts. Spyder3 offers more accuracy 
> and more control in this, but Spyder2 should do a pretty good job of it 
> on most display types.
> 

I guess that is what I mean, near blacks. Because of the age of these
monitors, (I have been buying decent 21" sony trinitons for $40 made
in the year 2001 and on that still look pretty good) The non
calibrated screen looks usually red. Especially on a tool bar monitor.
Even though spyder 2 does a stellar job of correcting that, I can see
a red cast in the near blacks that the profile is not getting. That is
what I want to correct. 

On another note, I spent way to much time yesterday trying to profile
and 19" NEC multisync CRT. The non calibrated screen looks great with
excellent brightness and contrast. I tried every which way possible to
calibrate it making about a dozen different profiles and what every
one kept coming out yellow and over saturated.

Any Known issues with NEC?

Thanks for the help!

Randy




 C. David Tobie
> Product Technology Manager
> ColorVision, Inc.
> CDTobie@...
> www.colorvision.com
> 
> -----Original Message-----
> From: Randy L <rlphoto@...>
> To: colorvision_group@yahoogroups.com
> Sent: Tue, 26 Feb 2008 9:48 am
> Subject: [colorvision_group] Re: neutralizing monitor black point .. 
> One for CD Tobie.
> 
> 
> 
> 
> 
> 
> Hi CD, I bet one of the great benefits of working for Colorvision is
> getting to hang out in Europe a lot. Sure beats Maine this time of
> year huh?
> 
> 
> >You can use the colorimeter window and adjust from the values
> > that lists from near black patches defined there, though thats a bit
> > less convenient...
> 
> Where can I get (easy) instructions on this technique? IF you can just
> get me started I can figure out the rest.
> 
> 
> Also when Spyder2 builds the profile does it color balance black point
> automatically? Is is supposed to? My Blacks still have a cast on some
> monitors after profiling.
> 
> Thanks for the help.
> 
> Randy
> 
> 
> 
> 
> 
> 
> --- In colorvision_group@yahoogroups.com, CDTobie@ wrote:
> >
> > >>Hello CD and congrats on your recent awards.
> >
> > Thanks, I'm in Tuscany (for Tuscany Photographic Workshops etc...)
> > right now, which for me is the the biggest award of all.
> >
> > >>So can you offer any tips on neutralizing my black point?
> >
> > Since we haven't implemented a 20% luminance version of our 100%
> > luminance White Balance function, we don't really offer a tool for
> > that. You can use the colorimeter window and adjust from the values
> > that lists from near black patches defined there, though thats a bit
> > less convenient...
> >
> > >>And why don't the manufactures provide black point adjustment any
> > more?
> >
> > Most don't even provide white point adjustment anymore, its just the
> > way the LCD market is going...
> >
> >
> 
> 
> 
> 
> Yahoo! Groups Links
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