Levels vs. Levels

[CompooperTeacher]

I've been using PSE since version 3.0, and I keep thinking that I should ask this question, so here goes: What is the difference (if any) between the two ways to create a level adjustment? Or is it just two different ways to do the same thing?

Here's a screen shot of the two different choices that I'm referring to:
http://www.photoshopelementsuser.com/gallery/view_img.php?id=30436

And now, may my question be forever answered (LOL).

[Codebreaker]

Couldn't quite work out from your post what the two methods were.

There are two options:

1. You make a Levels Adjustment directly to the image. This is a destructive process because once done and saved you can't undo it. Even before saving, it can be hard to re-adjust what you've done.

2. Levels Adjustment Layer. With this method you add a unique adjustment layer which provides you with the control you need but doesn't destroy the original pixels. The adjustment layer just blends the changes with whats beneath it. If you save this version, say as a PSD or TIFF, when you re-open it the adjustmen layer is still there and you can make further adjustments or even delete it and start again. Even before saving you can re-open the Adjustment Layer and make further changes.

Hope this helps.

Colin

[Grant]

Hi teacher

Both are working on layers. The one on the left takes place within the levels pallet. The one on the right you are prompts for a name, a blend mode, and a percentage before the levels dialogue is brought up. Now if you are not aware of it you may never know you were working in layers. The results are the same and they are not destructive.

On the other hand if you select Enhance>Adjust Lighting>Levels (or Command/Control L) the results may look the same but the process is destructive.