Assign Profile

CM
Posted By
cadman_meg
Jan 17, 2004
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230
Replies
3
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Closed
Again, am using a Minolta film scanner to bring in negatives and notice quite a bit of difference when selecting the profile that has my scanner name in it versus the default. Now this is a bit confusing to me and not sure what route to take. Could some folks here shed some light on this so that I am viewing things correctly. Thank you so much.

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RW
Rene_Walling
Jan 17, 2004
The usual route would be to assign you scanner’s profile and then convert to your working space.
CM
cadman_meg
Jan 17, 2004
Could you guys please go a little more in depth about this. Just new at trying to get the hang of this. My scanner allows me to use an ICC profile. So should I calibrate my monitor first, then use that ICC profile when scanning negs. and then use the output from scanner as my workspace in PS 7? I hear that what people see in terms of color can vary depending on lighting, whether they are tired or not, and a lot of other factors. Seems confusing and overwhelming trying to get it set up right. I just want everything to be consistent. Any more feedback? Thanks…this is all new to me. Never knew there was so much involved when it comes to color management.

wrote in message
The usual route would be to assign you scanner’s profile and then convert
to your working space.
L
LenHewitt
Jan 17, 2004
Cadman,

Suggest you take 15 mins. or so to read through the info on:

http://www.digital-darkroom.com

on Colour Management.

In the mean time:

The numbers in an image file do not represent specific colours. For example, 100R, 0G, 0B just means "make the brightest, most saturated red you can". It doesn’t mean a specific SHADE of red, and the red that will result will depend upon the capabilities of the device the data is being sent to (usually either a monitor or printer of some sort).

Only when coupled with an ICC profile that describes the ‘colour space’ do those numbers represent a specific shade.

If it helps you in any way here is my short "idiot’s guide to CM" <g>

There is data in a file. That data doesn’t represent specific colours UNTIL the colour space is stated (embedded profile or assign profile).

The working profile sets up the colour space you are working in, and the embedded profile allows the CM engine to convert the file data values to your working space values so those values still represent the same colour as originally indicated by the file data and embedded profile.

The monitor profile alters that data from your working space on the fly to allow the monitor to display the colours represented by the data within the working space profile.

When you print, the output profile alters the data to allow the printer to reproduce the colours represented by the data and the image profile.

The monitor profile effectively drops out of the equation when you print.

Provided the ‘translation’ from working space to monitor is correct AND the translation from working space to output device is correct, the print will match the monitor.

However, only if the translation from embedded profile to working space is also correct will the monitor and print also match the original file intentions.

For a fuller explanation, spend some 15 minutes or so over at http://www.computer-darkroom.com

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