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[OM] Re: Fixing gradient illumination effects caused by flash

Subject: [OM] Re: Fixing gradient illumination effects caused by flash
From: Moose <olymoose@xxxxxxxxx>
Date: Sat, 26 Jan 2008 11:49:00 -0800
orink@xxxxxxx wrote:
> ....
> Is there a clever way to correct the light on each of the faces of the girls 
> who were sitting at different distances from the flash since they were 
> sitting on the stair steps and thus the amount of light from the flash that 
> hit the faces on each stair step was different in intensity?
>
> I have Photoshop CS2, Adobe Photoshop Elements 5.0, Corel Paintshop Pro, etc.
>   
The short answer is yes, there are ways to compensate for that effect. 
Without seeing the image, it's hard to really tell, but I'll take a stab.

It sounds like you are in luck in one important way, the simple 
arrangement on stairs. I would first try a gradient map, in effect 
changing the exposure or brightness across the image. In this case, 
making a smooth transition from brighter at the top to darker at the 
bottom. It sounds like the situation is close to ideal for that. I don't 
know about the other apps, but CS2 does this.

I'd describe it in more detail - if I remembered. I have seldom used 
gradient maps, and forget the details of how they are set up. The help, 
manual and various on-line tutorials will have those details.

If that doesn't work, you get into creating masks for individual areas 
for general adjustment by distance, then possibly into dodging and 
burning faces.

Moose

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