Equating Images on Luminance

Hello,

I have a set of 25 images that I need to equate on luminance. That is, I need them to have the same luminance mean and distribution. Is it possible to do this using Photoshop? If so, what are the steps?

Thanks

Hm...
Hope you are patient and mathematic minded...
You will have to analyse all the pictures luminance first and note the result somewhere, then once you have selected the one you want you can use the adjustment level functions in order to have the most common luminance on all picture.
Note that to do this you will have to calculate the ratio between the luminance value you chose against the luminance on the picture you are changing...
Good luck if they are color and sunny pictures:D