Normal map save problem

[Saman]

Hello
I tried searching the site for this problem but I didn't find anything relevant. I'm having problems saving normal map files. The baked ones look fine but when I open the file and re-save it in photoshop it gets a bit distorted. I'm not really sure what's causing this.
The result looks odd, the different uv-shells have different brightness and you can see the edges pretty clearly;
http://www.goraaz.se/normalmapproblem.jpg

The file dimensions are 4096x4096 and I can't save tga files in anything lower than 16 bit(the baked files are 8bit). I've tried with tif too but I got the same problem. I've been using xoliul shader, maya standard mat render and cryengine sandbox 3 to test this problem.
Does anyone have any clue on what could be causing this?

[Stromberg90]

My first guess would be gamma correction in max but since it happens in other apps and engines I doubt it would be that, I have no idea what it could be, hope someone else does.

[SpeCter]

What exactly are you doing in photoshop?Merging different normalmaps together?Or just saving it in another format?

[Saman]

I was gonna merge different normal maps together and found out about the problem. The problem occurs when just re-saving the file as well.
Could the gamma correction during the baking cause this problem? Input gamma was set to 2.2.
Edit: Yes, that was apparently the problem. Thanks for the help, guys!

[Stromberg90]

Yay, now we know gamma correction fucks up everything :D