Re: [APML] Reflecting on Cygnus

[Jerry Lodriguss <lists4@astropix.com>]

Hi Chuck,

If the image was meant to be displayed on a web page, then it's probably 
going to be displayed without the profile being applied, with an exception 
for Safari on a Mac (I think), so 99 percent of the people who look at it 
won't see the profile applied.

But, there shouldn't be that much difference between having an sRGB profile 
applied and not having an sRGB profile applied on an average monitor, even 
in Safari. IF you have a monitor that is not going bad and if you have it 
correcly calibrated, and if you have your color management set up correctly 
(not only in Photoshop, but on the OS level, depending on your OS).

You're throwing a monkeywrench into the works though by viewing it in 
Photoshop because when you view it without the profile applied in PS, it is 
going to display it in Photoshop's working color space, which you may have 
set to something like Adobe, which will significantly change the display 
because you are essentially displaying it with the wrong profile.

You could change Photoshop's working color space to a wide variety of 
choices, and each time the image would look different. Sometimes radically 
different, such as if you chose Wide-Gamut RGB.

What you're doing in your example is essentially assigning the wrong color 
space profile to the image if your working color space in Photoshop is set 
to anything except sRGB.

Your example is intentionally mis-using color management, so it's no 
surprise that you would see quite a difference.

Jerry


>Open one of you NGC6914 image in Photoshop and select "Use embedded
>profile." Close the image, open it again but this time select "Don't
>manage color." You should see quite a difference. Which version do
>you intend for us to see?
>
>Chuck
>
>----------------------------------
>
>>Hi Chuck,
>>Uhmm..I don't really have an answer to your question. I save the tif
>>in sRGB. When converting to jpeg I don't change the profile. How
>>does it appear on the html page?
>>Rob Gendler
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