Photoshop: Color-correcting white and black points in a photo | lynda.com

Photoshop: Color-correcting white and black points in a photo | lynda.com

In this movie we are going to continue totalk about how we can color correct our photographs using Curves.

The first thing that you want to do with your image is begin to try to figureout what is the color shift? And with this image we can kind of tell that it'sa bit of a cool or cold color shift.

So how can I then correct that?Well, one of the things that I want to do is I want to grab my Eyedropper tool.

I'm going to change my Point Sample size to 5×5 Average or something other thanPoint Sample.

So you would want to bring that value up, for higher res fileswe'll take this up even higher.

Next, I'm going to click on the AdjustmentLayer icon and choose Threshold or navigate to the Adjustments panel and clickon Threshold here.

You can access the Threshold Adjustment either way.

Now I'mgoing to use this Threshold Adjustment in order to diagnose the image.

Now when I click-and-drag it to the left I notice I have my darkest tones aroundhere.

Okay, great! Well I have some shadows I'm just looking to try to findsome meaningful blacks.

So I'll find where the darkest tones are,hold down the Shift key and I'll add a little sample point there.

Next I'll click-and-dragto the right.

Now when I click-and-drag to the right I notice that,Oh, my gosh! I have some information, some snow here.

It is completelyabove 100% white, you can see there that my values in this area are 255,255, and 255, i.

E.

, no information; that won't print well.

I'm going to need tobring that down.

So we are going to be able to color correct this image; in anaddition we'll bring this image to a better place, so that it can be printed evenmore effectively.

Okay, well let's go ahead and Shift- clickon that point there as well, and then turn off the Eye icon for this layer.

Oneof the things I'm noticing is I do, definitely, have some bright spots in thesnow, I have this shadow over there, which will be nice, and also I'm probablygoing to need to work on the mid tones of this jacket as well; but let's startwith our white and black points.

From here we click on the Adjustment Layericon and choose good old Curves.

Next, we will double the black Eyedropper.

We are going to take our brightness value to 5%, click OK.

And then we are goingto sample that nice dark area.

As you notice that brightened up some of thosedark tones, now in this one point I actually have some meaningful detail in thatnice dark shadow, so that will print well.

Next I'm going to go to my white Eyedropper,double-click that point, change the brightness value to 95%.

I have alreadydone that previously.

So there is that number.

Click OK and we are going tosample this area of snow.

You know that brought down some of the values there,and my point too we can now see I have meaningful detail there in this areaof the image.

Next I'll click on the mid tone Eyedropper,and I'm going to sample an area on this jacket here and that will perform myfinal color correction.

Now my blacks are still color correct, mywhites are color correct over here, and now I have a much more color correct jacket.

I'll hold down the Shift key and I set a point on this jacket just so Ican look at the numbers and again these numbers are not going to be exactlythe same, but they are pretty close.

If I hold down the Shift key and drag thisaround, we are just going to be able to see how close these numbers are, and theyare pretty close.

So that looks pretty good; again, just trying to evaluatethe tone of the jacket.

Let's look at the before and after.

Here isbefore and here is after.

So in this case, we brought this image to a placewhere we can print it much more effectively and in addition the image looksmuch stronger.

If you press the Tab key to hide everything what's happened hereis now this portion of the image is much warmer.

We still have some nice cooltones in the background, so it still feels cool outside, we haven't neutralizedeverything and many times you don't want to neutralize everything, but in thiscase, we have definitely removed the color cast from our subjects, they look alot better, the background looks interesting.

We have this warm cool thinggoing on.

So this image is now color correct and atthis juncture we could cross off color correction from our list, and continueon in our digital postproduction workflow on this image.

Source: Youtube