Studio Lighting – Photography Stack Exchange

I have shot in natural lighting before this. I am just getting started with studio lighting. I just got my Alien Bees Lighting hooked up to my Canon Rebel T3 with Cactus V6 II radios. It was a process with the radios, but it finally got figured out.

BUT NOW my camera is acting weird.

(I have 3 lights set up. So, the chair is evenly lit)

It has a strip of brightness along each image. It didn’t do it on the first image, but on the rest it stays in the same spot when I tilt my camera different angles. So, it is not on my screen; it makes me think it is my lens, but I took pictures around my studio and it didn’t do the same thing.
I don’t even know where to begin to fix this. I know it’s not that the lighting is uneven, because the first image is even.

If it is still confusing: I’ll have my camera normal/horizontal, and the brightness will be at the top. Camera shot vertical/profile to the right, the brightness will be on the right edge of the image. Camera shot vertical/profile to the left, the brightness will be on the left edge of the image. If I completely flip my camera over for a horizontal shot, the brightness will be at the top of the image, but the image is flipped. But if I leave the lighting and it is fine.

This is just one example.