Green tint after using Auto Levels

On 26 Apr 2007 14:41:27 -0700, found these unused
words floating about:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Check monitor calibration.

On Apr 26, 7:02 pm, Sir F. A. Rien wrote:

On 26 Apr 2007 14:41:27 -0700, found these unused
words floating about:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Check monitor calibration.

Monitor calibration seems OK — used the foreManager setup tool that LG makes for its monitors, and still green. Are there any preferences or issues with colour spaces, etc, that could cause this?

wrote:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

You could always calibrate your monitor to eliminate the green tint.

wrote:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Idea? because Photoshop uses its own auto-decision, and you have full control of what you want the color you want. Or Photoshop is a program it doesn’t know exactly what the right color for the object, so it just average all colors to come up with a specific one.

– Sometime it works and you keep it

– Sometime it doesn’t work then you create one your own.

On 26 Apr 2007 14:41:27 -0700, wrote:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Don’t use Auto Levels.

Use Levels and adjust it yourself. Make it the way you want it.

Same prob here…This doesn’t happened on Phoshop cs2 Adobe should be contacted…but in my job I will not even try doing it as my life could get even more complicated… "boss from hell" here On 26 Apr 2007 14:41:27 -0700, wrote:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.

Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

Then make sure to Click/check the Save as Defaults box

On 26 Apr 2007 15:59:29 -0700, found these unused
words floating about:

On Apr 26, 7:02 pm, Sir F. A. Rien wrote:

On 26 Apr 2007 14:41:27 -0700, found these unused
words floating about:

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Check monitor calibration.

Monitor calibration seems OK — used the foreManager setup tool that LG makes for its monitors, and still green. Are there any preferences or issues with colour spaces, etc, that could cause this?

You can see if Cs is miscalculating the centre ‘grey’ by doing a ‘manual’ three point ‘auto’ level. Use the eye dropper and white, black, grey.

Mr Gee says CS (don’t have that version) does it but not CS2. If that proves out for you then you’d have to UG or do manually or trim afterwards.

I’m presuming that your color set up preferences are set on Adobe’s " sRGB Color Space" and the rest of the values are what is proper for your output.

On Fri, 27 Apr 2007 14:46:10 GMT, "Dr. Hackenbush" wrote:

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.
Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

I would love to know why these values aren’t set to 0,0,0 – 128,128,128 – 255,255,255

jc
—

"The nice thing about a mare is you get to ride a lot of different horses without having to own that many." ~ Eileen Morgan of The Mare’s Nest, PA

"JC Dill" wrote in message

On Fri, 27 Apr 2007 14:46:10 GMT, "Dr. Hackenbush" wrote:

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.
Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in
the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

I would love to know why these values aren’t set to 0,0,0 – 128,128,128 – 255,255,255

jc
—

"The nice thing about a mare is you get to ride a lot of different horses without having to own that many." ~ Eileen Morgan of The Mare’s Nest, PA

"JC Dill" wrote in message

On Fri, 27 Apr 2007 14:46:10 GMT, "Dr. Hackenbush" wrote:

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.
Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in
the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

I would love to know why these values aren’t set to 0,0,0 – 128,128,128 – 255,255,255

jc

snip
it helps to bring out detail by redefining black and white because these particular colours dont show any detail, so this way shades near black and white show some detail.

I only told the OP to check his settings cos they might be a million miles out, and at least this way hed have a base to start from.

..

"Dr. Hackenbush" wrote in message

"JC Dill" wrote in message

On Fri, 27 Apr 2007 14:46:10 GMT, "Dr. Hackenbush" wrote:

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.
Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in
the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

I would love to know why these values aren’t set to 0,0,0 – 128,128,128 – 255,255,255

jc

snip
it helps to bring out detail by redefining black and white because these particular colours dont show any detail, so this way shades near black and white show some detail.

I only told the OP to check his settings cos they might be a million miles out, and at least this way hed have a base to start from.

forgot to say, if you open a picture and change the auto levels settings as above to some wild figures, keep the preview box checked youll see what the effect of these settings is, and it will give an idea of how if these settings are totally wrong it can give you a Green tint.

Thanks for the help…but I did exact as U said and still that green tint presists …I put some pressure on my boss to buy the CS3 and now he doesn’t want to know about this prob, I just find it so depressing to work with a dark green tint instead of a true black. Please Help lyOn Fri, 27 Apr 2007 14:46:10 GMT, "Dr. Hackenbush" wrote:

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

OK this is worth checking as it will only take a minute.
Go to levels and then select Options this brings up the Auto Colour Correction Options

Check/Select Enhance Per Channel Contrast
click on the Shadows / Black box and in the colour selector that comes up in the RGB boxes enter 12, 12,12
then repeat for the Grey/Midtones 128,128,128 and White/Highlights 245,245,245

Then make sure to Click/check the Save as Defaults box

In article ,
Mister GEE wrote:

Thanks for the help…but I did exact as U said and still that green tint presists …I put some pressure on my boss to buy the CS3 and now he doesn’t want to know about this prob, I just find it so depressing to work with a dark green tint instead of a true black. Please Help

First tings first. Are you working in CMYK, not RGB? In CMYK, the Auto Levels and Desaturate commands may produce an undesirable tint, because in CMYK, if oyu have the same values of all four channels, the result is not neutral gray.

—
Photography, kink, polyamory, shareware, and more: all at http://www.xeromag.com/franklin.html

wrote in message

When I use the Auto Levels function in Photoshop CS, every picture — without fail — is given a greenish tint. any ideas why that might be?

Coming late to this thread. No one has mentioned the most likely possibility, which is that you are using your monitor space at your working space. This happens, for example, when you disable color management in Photoshop’s Color Settings dialog, or specify your monitor profile as your working space. It is better practice to use sRGB, or one of the other standard working spaces, with Adobe RGB the next most popular.

To track this down further, start by looking at a sequence of known gray colors in Photoshop and see if it has a green tint. You can easily make one yourself with the gradient color, or use the gray step wedge provided here: http://curvemeister.com/downloads/TestStrip/digital_test_str ip.htm

—
Mike Russell
www.curvemeister.com/forum/