Comments on: How to determine overexposed and underexposed areas using Photoshop

By: Is the white background really white? «

Is the white background really white? « — Fri, 30 Apr 2010 22:08:50 +0000

[...] More detailed screen shots of this step you can find on my previous lesson How to determine overexposed and underexposed areas using Photoshop [...]

By: sharaff

sharaff — Fri, 15 Jan 2010 11:06:37 +0000

The very basics we forget most of the time, in fact it is the first to be understood. Good information provided here. I like it.

By: dbltapp

dbltapp — Sat, 09 Jan 2010 14:27:52 +0000

Using CS4 and either jpg or raw images, set them to open in Adobe Camera Raw. After opening an image, in the histogram panel (upper right), click on the triangles in the upper left and right corners. Overexposure shows up red in the image, underexposure blue. Adjust Exposure and Recovery to fix things.

Works identically in LightRoom.

By: John Wheeler

John Wheeler — Fri, 08 Jan 2010 22:53:22 +0000

Here is a link to my blog where I posted a method for dynamic detection of over / under exposure very similar to Adobe Lightroom and Adobe Camera Raw http://jkwphoto.blogspot.com/

I plan to post other methods on my blog if there is interest.

By: Kent Graham

Kent Graham — Fri, 08 Jan 2010 18:38:27 +0000

I believe a simpler way is to use your eye dropper and take readings of your raw capture. You can use RGB or if the image is going to print
use CMYK. Take several readings in highlights, 1/4 tones, midtones, 3/4 tones, and shadow areas. If you shot by the numbers, this should go
quickly.

By: Randy Sellet

Randy Sellet — Fri, 08 Jan 2010 13:44:13 +0000

Thanks, this is a very fast, easy way to find the areas in a photo not worth exploring or optimizing. This will save me time and effort. Excellent help advice!

By: Sean

Sean — Fri, 08 Jan 2010 13:24:23 +0000

Use the Alt (Option) Key as you drag the sliders and you will see the same behavior. This occurs for the levels dialog box as well. It can be helpful even if none of your image is over or underexposed because you can set the sliders to just the point where you would begin losing information.