Re: [APML] RGB Steup in PS

["Andrew Skretvedt" <atsdroid@wiktel.com>]

Hi Alan,

You know, I'm reading the thread here and something just occured to me.
Might you have QuickMask mode turned on?

First a little follow on to your conversation with Richard Klappal:

The "eyeball" in the channels palette refers to channel visibility. When the
eyeball is present, that channel is depicted in the image window. You can
click the eyeball to turn that channel on and off. This is helpful when you
want to do edits that affect only one channel.

For an RGB image, you'll have initially four channels in that palette's
list. RGB, Red, Green, and Blue. You can make a single channel visible by
clicking its channel name. RGB is not really a channel, but an alias for
"all three". If you click RGB to select it, you are actually selecting all
three channels and eyeballs should appear next to RGB, and Red, Green, and
Blue. If you click to make the eyeball visible in each channel individually,
when you have made all three visible, the eyeball next to RGB will also
appear.

Under File->Preferences->Display & Cursors you can choose wether color
channels are shown in color. Having this turned on means that if you select
just the Green channel in an RGB image, you'll see an image made of only
shades of green. The default is unchecked, meaning that single-selected
channels are displayed as greyscale. Regardless of preference, selecting
(making eyeball visible on) any two channels will reveal a composite color
image with the hidden channel's color contribution missing.

Now, you can have more channels than just the primary colors for the color
mode you're working with (i.e. more than just RGB, Red, Green, Blue for RGB
color images). These additional channels are sometimes referred to as Alpha
channels or Masks. They can be employed to denote where an image is to be
transparent in the case of an alpha channel, or where edits will not affect
the image in the case of a mask.

One Photoshop editing mode is called QuickMask. You can select standard or
Quick Mask mode by pressing 'Q' or clicking one of the icons on the 2nd row
from the bottom of the main tool palette. Standard looks like a rectangle
with a dashed circle inside, QuickMask has a dashed and shaded circle.

When a mask is turned on and affecting your edits to an image, Photoshop
will hint you about where the mask is located on the image by painting 50%
Red over masked areas of the image. If you have a masking covering the whole
image, the image will be "pinkish".

You can tell by looking in the channels palette and seeing if there are
extra channels, specifically one named "Quick Mask". Extra channels with the
eyeball visible will cause the 50% Red to be cast.

I found in my experimentation, that an image saved (in PSD or TIFF) with a
Quick Mask channel present will re-open later with the Quick Mask data
active, and the resulting 50% Red cast.

I know you'll have it figured out eventually. I empathize with your
frustration, however. Chin up!

Andrew Skretvedt, KGFK


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