Photo filter in CS4 - using the eyedropper does not work

Sometimes I correct a dominant book using the photo filter, a technique that I shot of Katrin Eismann "restoration and retouching" color all over.


You add a layer of Photo filter, make sure the 'brightness' checkbox is checked, push 'density' up to 100% and click the shade of color in the dialog box.


Select color filter dialog box opens, with digital displays for STL, RGB, CMYK and Lab color In addition, the cursor turns into a dropper.


You click in a box to the image problem. Change numbers. You reverse the 'a' and 'b' values in LAB color boxes. For example if LAB is called 65,16,24, you replace 16 and 24-16 and -24 (so that in my example the LABORATORY values are now 65-16,-24. You click OK and then adjust the opacity of the layer of color filter to your liking.


Today I tried this in CS4 for the first time. When I click in a box to the image problem, LAB values becomes 100,0,0 - whatever the picture, no matter where I click.


This result is not consistent. I did a number of tests on 2 different images, try stuff as brightness release, mowing the Photo layer filter to the underlying layer, use the dialog box filter of Photo that you can access from the bottom of the layers palette, rather than the settings panel, etc. Twice I got reasonable values when I clicked on the picture of the select a color filter dialog box. But try again the same parameters (brightness turned off, for example) into another image, or in the same image, led to the now dreaded 100,0,0


I have reset my prefs. Same result.


I got my partner to try it. He got the same result. I am running CS4 on Windows 7 x 64. It is on a Mac with Snow Leopard.


Is this a known issue?


Thank you


Mary

This is because the layer mask is active and therefore clicking on the image with the eyedropper picked up the pure white of the layer mask. You can also see that, in the title bar, it should say something like (Photo Filter 1, Layer Mask/8). To fix it just click on the adjustment layer thumbnail of the

Tags: Photoshop

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