Morning all, I try to resolve a problem but need help I have made pictures of a object with spot in interior and I must integrate it in a exterior scene under the sunshine. I sthere someone who know how to do? I have put more yelow color, more luminosity but nothing is good. thanks ! JJ

It's a bit hard without seeing the subject, but I'd suspect that Image>Adjust>Color Balance and Hue/Saturation will be the places to start.

Is it possible to post your work in progress here to see exactly what your problem is?? I'm sure you can get the help you need. There are some very talented and knowledgeable people here willing to help.:)

I would like to post the project there but i don't think my client will be happy to see the project on the web ;)it is a marchitectural maquette i have painted and i i must integrate the project in the environnement. I will continue my search thanks a lot. I try to found the numerical & basic caracteristique of natural & spot luminosity on the web. maybe the chance to find it ! bye JJ

check back soon we may have something... or if you do find more information, please share it, i would love to hear how it goes. s

First off, I hope you have a mask for the object so you can adjust it independent of the exterior background. With the object selected, you can try playing around with the Curves, the Levels, or (as someone else has pointed out) the Hue/Saturation (where you will also find a setting for Lightness). Or... you can try this: with just the object showing, hit Ctrl-Alt-Shift-~ (the tilde character, left of the 1 key) [or Command-Option-Shift-~ if you're on a Mac]. This will select the light/luminous areas of the displayed image. If you then hit Ctrl-J or Command-J, those light areas will be copied onto its own layer, and you can set that layer at Screen. Not sure if that will solve your problem exactly, but you could probably modify or add to those steps somewhat and get what you need in the end. To be honest, I have absolutely no idea what you mean by natural and spot luminosity. Would be nice if you could post an image similar to the one you're working on so you can protect your client's privacy while at the same time providing us with a visual aid. :)