Photoshop Tutorial, Remove a Color Cast with Auto Color correction

Photoshop Tutorial, Remove a Color Cast with Auto Color correction

Older photographs have significant tonal issues wereimages are faded, altered overtime and with extreme color cast.

In our example the color ofthis vintage image has been shifted and our goal isto correct that color cast.

Photoshop has some like the Auto Tone, Auto Contrast and Auto Color located inside the Image menu, adjustments you can apply to your images and see quick results but these adjustments are one stop, often referred to as destructive editing.

So instead we will choose a Adobe Photoshop Adjustment layer, in this case a Levels adjustment layer so we can work none destructively and have more flexibility.

We are actually going to do this in 2 ways and compare the results.

In both ways we are going to use a Levels adjustment layer, one manual and the other with Auto options.

For the manual way I will balance the image by adjusting the Shadows and Highlights for each channel and reset the black and white points to remove that color cast so let's go ahead and dothat.

At the bottom the Layers panel click onthis icon being up the levels adjustment layer and as I mentioned before we are going to each of this channel starting from the Red channel andbalance the image so I am going to bring in the shadows here, bring in the highlights go to the Green channel, bring in theshadows and bring in the highlights and do the same thing for the Blue channel like so and all you have to do basically is to tune this a bit more so I am going through each of these channels and see what looks better like so.

I like what I see here so I'm going to create a merged version of these two layers by using a keyboard shortcut to activate Photoshop's Stamp Visible command.

So Shift select and the Photoshop Shortcut for this which is, Control + Alt + Shift + E (Windows) and it will be Command + Option + Shift + E (Mac).

So let's rename the Photoshop layer would be Manual, hit Enter/Return on your keyboard and next we are going to use the Auto Options and then compare both.

Now let's see what we get with the Auto Color options.

I am going back to the layer's adjustment layer reset it and then go for the Auto option so in order to that we need to hold down the Alt key or the Option key on the Mac and just click on the Auto button and now we have the Auto Color Corrections Options with four algorithms to choose from.

Now by default Adobe Photoshop starts with the Enhance Brightness and Contrast and as you can see option doesn't really help me.

So I am going to start with the first algorithm, the Enhance Monochromatic Contrast, so lets click n that basically this algorithm is the same as if I go to the Image menu and choose Auto Contrast and what it does is, it tries to make the dark part of the image close to black and the bright part of the image close to white without shifting colors and againthis option is not helping me.

These two options, the options below, the Enhance Per Channel Contrast and the Find Dark & Light Colors are for color corrections so I'm going to choose the Enhance Per Channel Contrast first and basically this is the same asif you got to the Image menu and use Auto Tone and what it does is does exactly what it did beforemanually with the Adobe Photoshop Levels adjustment layer, it is maximizing the tonal range in each channel to produce moredramatic color correction though this may remove or introduce some color cast, in this case it has already introduced some so then I going to the third algorithm and see what that does.

so I am going to select that ans you can see we have a big improvement between the Enhance Per Channel Contrast and the Find Dark and Light Colors.

The Find Dark & Light Colors in Photoshop basically pushes the lights and darks to it true black-and-whitepoint in a image and maximizes the contrast now below here you have the ability to change that true black and White point and reassigned them by usingthe color picker to set a value the Shadows, Mid tones, or Highlights, in this case I just wannaplay around a little bit with the Highlights and shift the white color not to be so white.

so I am going to bring this into the Red just a bit, OK, and I am looking at their faces and also the sky like so.

Click OK and lastly let's not forget the Snap Neutral Midtones basically you do this if you want Photoshop to find an average neutral color in the image if I choose so, well this is not going to work either for me so I am going to uncheck that and then click OK and then Photoshop asks me if you want to save the new target colors as default, I am going to say NO because next time you launch Adobe Photoshop it will remember those settings.

I am going to click, NO and then once again we are going to create a merged version of these two layers so Shift select those two layers and we are going to use a Photoshop keyboard shortcut to activate the Stamp Visible command that will be again, Control + Alt + Shift + E (Windows) Command + Option + Shift + E (Mac) for the Stamp Visible shortcut.

Double click to rename the layer to Auto and basically Next we are going to compare the Manual way and Auto way As you can see there is a difference between the Manual way and the Auto way.

With the manual we see that the colors are not as balanced as using the Auto options the manual way has been affected but also time-consuming process going through each Photoshop channel and manipulated one at a time so basically if you want to make anyfurther changes you have to go back to each all the individual Adobe Photoshop channels, the Red, Green and Blue and make even further tweaks.

Using the Auto way, the Auto options, we are getting better results It's a great place to start, it helps speed things up and it is quite impressivehow a simple automated level adjustment can repair an image with an extreme color cast.

The key is to produce a very good result, very quickly with someof the Photoshop automated options inside the Levels adjustment layers and as well as, let me not forget, the Photoshop Curves Adjustment layer.

So give it a try with your color cast images and seewhere it takes you This concludes this lecture and thank you for watching 3rd Element training tutorials with Elias Sarantopoulos.

Source: Youtube