Why Oneminus result is so dirty??

115746-img_20161121_001_1479704604.png

I want to invert texture, so I used Oneminus node. but result was so dirty.

not only oneminus. all that i did are dirty result.

why this happened?? how can I invert texture?

this is same problem [[Link]][3]

thank you.

Is the texture set to SRGB? if so, disable it :slight_smile:

thank you for reply but it was already not SRGB…