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Old May 29, 2010 | 11:01 PM
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Jake2k
Drinker of the Dew
 
Joined: Nov 2005
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I did a little experiment to see on what steps the color is changing and by how much.

The Setup:

I got some paint color swatches from walmart and stuck them to my fridge

then I put my D90 on a tripod and set everything to manual so nothing would change between the shots, white balance = fluorescent, f/stop = 7.1, shutter speed = 1/3, iso 200, picture control = standard

I then took 4 photos, RAW-AdobeRGB, RAW-sRGB, JPEG-AdobeRGB, and JPEG-sRGB

The Test: (only tested JPEG-sRGB as of now)

I used Paint.net, which is a free editing program that doesn't use custom color profiles to copy screen prints from all the steps I take from upload to save and see where the color shifts take place and by how much.

First I opened the JPEG-sRGB in Paint.net(PDN) as my "control", then I previewed the same photo in Nikon's ViewNX, took a screen print and added it to a new layer in PDN, then I opened it in Photoshop CS3 and again took a screen print, and lastly I saved the file and opened it in Firefox and took a final screen print.

So now I have 4 layers in PDN: original, viewnx , photoshop, firefox

After comparing the colors in each layer I can see that original and firefox are a match and viewnx and photoshop are a match but both sets differ from each other. So basically:

original vs. viewnx = change

viewnx vs. photoshop = doesn't change

photoshop vs. firefox = change

-but-

original vs. firefox = doesn't change



So it seems that viewnx and photoshop are using a different color profile then my computer/screen and firefox, right?

I went and double checked and here are the profiles everything is set to:

Camera = sRGB

Nikon Transfer = Imbed ICC profile during transer

ViewNx = Use imbedded profile

Photoshop = sRGB IEC61966-2.1

Firefox = ?

Sorry for the long write up, I hope someone can help me figure this out.
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