Dan
Get a Kodak Grey Card which has the 18% grey front and a white back. Take a
test shot of both sides and set your points from there. It is quite simple
toset up a batch conversion for the images after that.
Cheers Adam
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From: "Daniel Sepke" <daniel.sepke@xxxxxxxxx>
Reply-To: olympus@xxxxxxxxxx
To: <olympus@xxxxxxxxxx>
Subject: [OM] Grey Points &White Balance Issues
Date: Fri, 1 Sep 2006 10:49:26 -0400
>
>Hello all,
>
>I hope this question doesn't get lost in all current surge of traffic but
>here goes. My question relates to color balancing of studio portraits from
>E-1 RAW files using Olympus Viewer.
>
>Background:
>
>I have just shot a set of formal portraits in a studio setting with Alien
>Bees flash units. To ensure I had absolute control over my end results I
>shot RAW. Prior to starting the sessions I set my white balance to 5300K
>(daylight setting on the E-1). I am using Millers MPIX for printing these
>images and my first batch of test proofs came back cold looking with a
>slight magenta shift apparent in skin tones. When submitting the orders I
>have had them not adjust anything to remove that particular variable. The
>proofs I get back are consistent in quality and color.
>
>My second batch of test proofs took multiple RAW conversions of the same
>image to which I applied various alternate white balance setups. All the
>files were generated by Olympus Viewer with two files having further color
>correction using the color cast tool in Photoshop Elements 2. I generated
>files including 5300K with PE2 color cast correction, 6000K straight, 6500K
>with PE2 color cast correction, 6500K straight and finally one with the
grey
>point selected in Oly Viewer. I was careful to attempt to select the same
>area for grey point sampling in both Viewer and PE2. My end results on
paper
>have a clearly better results from the color corrected versions at 5300K
>with PE2 correction and the Viewer grey point selected correction. Between
>these two images there is not a lot though I have judged the Viewer grey
>point print the best under further examination.
>
>My ultimate question(s) is:
>Is it possible to determine the values that the grey point selection tool
in
>Viewer uses to reliably apply that correction to all my other files from
>these sessions? Or do I have the select my grey point from my known sample
>file and apply it to all the others in batch conversion? Alternatively I
>also have RSE but have not created samples &proofs using its color
>correction tools (I mention this in case someone has a method that may work
>better in that program).
>
>Finally, what if anything could I introduce to my workflow to get my white
>point under control earlier?
>
>TIA, Dan S.
>
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>
>
>
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