SnL Forum

It's always a good idea to check a photo's levels before you do any other editing. When photos are backlit, lit poorly, or overexposed, the colors may not look quite right. Sometimes this is very obvious, but other times it's hard to tell, so always check your photo's levels. This will help you make the colors in your photos look their best.

1. With your image open in Photoshop, find and click Edit in the menu bar.
2. Point to Adjustments > in the drop-down menu and leave the cursor there for a second.
3. In the menu that pops up (usually to the right), click on Auto Levels.
4. Save your work by hitting Apple + S in Mac OS X or CTRL + S in Windows. Alternatively, you can press Shift + Apple + L on a Mac or CTRL + L on a PC to use the Auto Levels function.
5. You should notice a change in the appearance of your photo. If you don't see a noticeable difference, it's okay. It just means your photo looked good right from the start.

You can use PhotoShop to fine-tune colors in your picture. You can change someones hair from blond to red, or you can fine-tune the tone of an picture to correct for age or imperfections in the scanning system. You can lighten an picture, make it darker, or add a sparkle to that special someones eyes!

I think i have found complete information here about the leveling of photos , I am a web designer and such information is quite helpful for me. Thanks for sharing.