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Re: [APML] Monitor settings



I think you intended this as a private message so I'll reply privately.

Mike Cook


From:           	"mstecker" <mstecker@dslextreme.com>
To:             	<astro-photo@seds.org>
Subject:        	Re: [APML] Monitor settings
Date sent:      	Mon, 14 Jan 2002 12:27:47 -0800
Send reply to:  	astro-photo@seds.org

> Hello Mike Cook:
>      Sorry for calling you Chris (Cook) instead of Mike in my last post.
> Maybe you can clear up some of the questions I have on calibration and color
> space.
> 
>      My goal in preparing my images in PhotoShop is to make them look good
> on my web page when viewed by others over the internet.  I find that when I
> use PhotoShop 4 (no color spaces), I get very consistent results.  What I
> mean is that images prepared in PS4 look the same in this program as they do
> when published to my web page.  When I use PS5, I do not get constant
> results -- i.e. some images look fairly good, but some look different when
> published to my web page.
> 
>      I was under the assumption that the sRGB color space in PS5 should be
> used for accurate viewing on a monitor  over the internet.  However, when I
> try to calibrate PS5 using RGB Setup in PS5 for the color space sRGB, it
> changes to a "Custom" setting when I set the white point at 9300K.  I
> assume, then that sRGB is set up for viewing at 6500K monitor color
> temperature.  The problem is that most people now use a 9300K white point.
> Since this is totally confusing to me, I opt to use the PS4 where I get very
> consistent results (what I see in PS4 looks exactly the same on my web page
> in Internet Explorer).  The whole calibration system appears to be is
> disarray.  I would think that most people that view my web page do not even
> calibrate their monitors.  As an example, I have a friend who is a scientist
> that uses a large $2500 flat panel Mac monitor at work (he can not use a CRT
> because the magnets used in his research distort the image) and uses a Mac
> CRT at home.  When I look at one of my web pages on both of his monitors,
> they look completely different (brightness).  So I asked him to calibrate
> his Mac flat panel monitor in Adobe Gamma.  The image changed dramatically
> and it now more closely approaches the one I see on my monitor.
> Unfortunately, I think that most people are like my friend and do not
> calibrate their monitors.
> 
> 
> Michael Stecker
> mstecker@dslextreme.com
> 
> My Web Site:
> http://www.homestead.com/mstecker/index.html (INDEX)
> http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
> http://www.homestead.com/mstecker/placesindex.html (Places Index)
> 
> 
> 
> ----- Original Message -----
> From: "Mike Cook, AF9Y" <mwcook@concentric.net>
> To: <astro-photo@seds.org>
> Sent: Monday, January 14, 2002 4:05 AM
> Subject: Re: [APML] Monitor settings
> 
> 
> > Michael,
> >
> >     What color space were you using in PhotoShop when you made your
> > tests?
> >
> >
> > From:           "mstecker" <mstecker@dslextreme.com>
> > To:             <astro-photo@seds.org>
> > Subject:        Re: [APML] Monitor settings
> > Date sent:      Sun, 13 Jan 2002 23:40:44 -0800
> > Send reply to:  astro-photo@seds.org
> >
> > > Hello Warren:
> > >      I also find monitor calibration a difficult task.  I do not have a
> Compaq computer,
> > >      but use an IBM clone with Windows 98.  Supposedly the Adobe Gamma
> is supposed to
> > >      calibrate your monitor to their standard (ICC).  I find two
> problems with this.  The
> > >      first is that a lot of people don't use it and the second is that
> the calibration
> > >      parameter is nebulous or uncertain when you adjust the brightness
> of your monitor in
> > >      Adobe Gamma.  I have the contrast on my Viewsonic Graphic Series
> G771 set at 100 and
> > >      the brightness set at 90 (unfortunately some of the newer Viewsonic
> monitors do not
> > >      have quantitative settings).  Some months ago I ran a test on two
> monitors (my
> > >      Viewsonic and a Samsung).  They were both calibrated with Adobe
> Gamma and I tried to
> > >      make several web page photos using both monitors.  I adjusted the
> images in Photoshop
> > >      so they would look the same on both monitors.  I then published
> both sets of photos
> > >      on a single web page and asked several people to view these images
> on their monitors
> > >      over the internet. The responses were quite variable.  Some liked
> those prepared on
> > >      my Viewsonic, some the Samsung and one person thought they were
> equal.  This just
> > >      shows you how variable monitor calibration is.
> > >
> > >
> > > Michael Stecker
> > > mstecker@dslextreme.com
> > >
> > > My Web Site:
> > > http://www.homestead.com/mstecker/index.html (INDEX)
> > > http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
> > > http://www.homestead.com/mstecker/placesindex.html (Places Index)
> > >
> > >
> > >
> > >   ----- Original Message -----
> > >   From: Warren Keller
> > >   To: apml
> > >   Sent: Sunday, January 13, 2002 8:23 PM
> > >   Subject: [APML] Monitor settings
> > >
> > >
> > >   Hi guys,
> > >                I asked this awhile back, but with no responses, thought
> I'd try again. I
> > >                find every online step wedge to be quite different and in
> fact the various
> > >                representations of Chuck's does not look the same in
> several mirrored
> > >                sites. Even my scanner's program has one. It is for this
> reason that I am
> > >                constantly adjusting and am never convinced my processing
> is 'right'. If I
> > >                set to Chuck's, my eyeballs get ripped from their
> sockets.
> > >
> > >   I believe my Adobe gamma stored settings are good, but I'd still like
> some of you,
> > >   especially Compaq owners, to just look at their monitor's
> Brightness/Contrast settings
> > >   and tell me what ballpark you're running at.
> > >
> > >   Thank you! Warren
> > >
> >
> >
> >
> > Mike Cook, AF9Y
> > http://www.webcom.com/af9y
> > mwcook@cris.com
> >
> >
> >
> >
> > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> >              Unsubscribe at <majordomo@seds.org>
> >
> 
> 
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> 



Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com




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