What I learned at the CS3 Power Tour Part 5

Just as I was getting used to playing with curves on Photoshop CS2 and finding the right blend to make the midtones stand out, Scott Kelby goes and shows me a simpler way to do it. No math involved, no shaping the right S-curve, and there’s even no necessary constant monitoring of the image to make sure every adjustment is right.

Great. Now I can’t even feel smart about it.

But seriously. It is so ridiculously simple that even though I still haven’t found my CS3 Power Tour workbook, I didn’t need it for this post. I mean, if even my short-term-memory-challenged mind that keeps failing to keep track of chores and grocery lists and maintenance schedules can remember this without a cheat sheet, then it must really be that simple.

What I learned at the CS3 Power Tour:

5. If you want an almost no-brainer method to punch up your midtones, do it in Lab color.

Here’s a photo I took in Grand Cayman a few months ago. It was a bit overcast that day, which made for the flat colors in this photo. At least, that’s what I tell myself. Hey, it’s my memory, okay?

lonely jetski before

After adjusting the exposure ever so slightly, I converted it to Lab color. Then I launched curves and switched to the “a” channel. I shifted both endpoints of the curve (or line, if you insist I say that because it’s straight and you don’t want me to confuse anyone) in toward the center by equal amounts.

The adjusted curve looks like this:

lab color curve

(By the way, yours will look a bit different because that’s a CS2 screen shot. I didn’t feel like powering up the other machine just to get that capture. Bear with me, I haven’t had breakfast yet.)

Don’t be alarmed by the intermediate effects on your image. You’ll see it in green or blue or some other strange otherworldly hue, but that’s okay. Be patient and wait for the final result. Which won’t be a long wait, because the only thing left to do is to make the same adjustment for the “b” channel, and presto! Instant midtone punch.

lonely jetski before

lonely jetski after

If you plan to do more processing or save it as a jpeg file, don’t forget to convert it back to RGB color.

And if anyone asks, tell them, “Oh, I converted the image to lab color mode and then manually adjusted the curves for individual channels to get that result.” They’ll think you’re a genius and that you can calculate the slope of a curve in your head without a calculator and recite the value of pi to twenty-nine decimal places.

Then you can come back here and thank me. I will gladly accept words of praise and bars of chocolate. And chewy home baked cookies.

3 Responses to What I learned at the CS3 Power Tour Part 5
  1. karmardav
    November 30, 2007 | 7:34 pm

    Not being a photoshop user, that post made no sense to me whatsoever! ;-) But I will say, I’m starting to appreciate the possibilities for someone such as yourself, who obviously skilled in using it. And I’m now craving chocolate and cookies, thank you very much…. and its too cold to venture out to get some!

  2. brc
    December 1, 2007 | 11:15 pm

    You lost me too, but the “after” photo is great, so whatever Lab color is, I’ll take two!

  3. brittani.p
    December 25, 2007 | 12:15 pm

    i gotta say that is great i have to take a good colcor.

Leave a Reply

Wanting to leave an <em>phasis on your comment?

Trackback URL http://ivoryhut.com/2007/11/what-i-learned-at-the-cs3-power-tour-part-5/trackback/
about me

I write, cook, play music, and make pictures. Not necessarily in that order. I was born and raised in the Philippines, and it shows. That means I eat rice with every meal, love my cousins like my own siblings, and firmly believe that avocados are best eaten with cream and sugar.

If you want to learn more about me, here are 43 things I'd like to do. Here's a little something about my name, in case you were wondering. Here are some other places you'll find me:

facebook pageflickrtwittertasty ktichenrss feedcontact me
Donate to Bloggers Without Borders For more information, visit the BwoB website, our BwoB Facebook page and follow @bloggerswob on Twitter.
Peko Peko Charity Cookbook
LOST AND FOUND

One summer night in 2010, our house burned to the ground and we lost everything we had. This is the story of what happened and how life and hope can always rise from ashes.



I'm proud to belong to an amazing community of Filipino food lovers. Together, we celebrate this often-neglected Asian cuisine, sharing our family's treasured recipes and discovering new ones along the way. This is our club.
Subscribe by email

Enter your email address:

Delivered by FeedBurner