AutoDesk Smoke :: EXR Look Different On Import

I have RED footage which I exported as EXR. When I import them back in, they look exactly like the RED footage. But when I import the EXR in Fusion, export it back out, and then import that EXR into Smoke, it looks brighter, although I didn't change anything in Fusion. (when I compare the EXR from Smoke and the EXR from fusion in my finder on my desktop, they look exactly the same). So what is Smoke doing with the "foreign" exr on import?I was also playing with the LUT settings. I get a result which is close, but I need to be exact.