"Reverse" and image in Photoshop?

I have a PSD image from a client that I want to reverese, like if you printed a film negative backwards. I cannot for the life of me figure out how to reverse an image in Photoshop. Any suggestions?

Thanks.

-dwz

Ctrl+i

if thats what you mean. It’s inverted. By reverse you mean…? Haven’t paid attention to negative film, is it all opposite like a mirror reflection? WOrk with Image > Rotate Canvas > Flip Horizontal

*CTRL + I will work for the active layer

You may get a yellow cast through your image from the actual film, to correct this adjuct your channels.

Thanks guys!..