Hood man??

Are there eye pieces any good

I have one on my 60D and really like it. (Except the fact it interferes a bit with the rotating LCD.) It certainly sticks out from the back of the camera, but it's very comfortable to use and does a good job blocking light so I no longer find myself cupping my other hand over my face to see through the viewfinder properly.

It works well on my 30D, but on the T2i it turns off the rear display.

BobG wrote in post #13392209
It works well on my 30D, but on the T2i it turns off the rear display.

Weird, I have one that I bought exclusively for my T2i and haven't experienced that issue. It could be because I always use that camera in live view though.
To the OP, I've been more than happy with mine; the glass is clear and the eyepiece is comfortable. I have seen complaints about the quality of the glass on some of the cheaper loupes out there, but I've only ever used a Hoodman so I wouldn't know.

Are we talking about the HoodEYE Cup or the HoodLoupe?
http://www.hoodmanusa.​com/

BobG wrote in post #13392287
Are we talking about the HoodEYE Cup or the HoodLoupe?
http://www.hoodmanusa.​com/

good point, I was thinking of the loupe.

BobG wrote in post #13392287
Are we talking about the HoodEYE Cup or the HoodLoupe?
http://www.hoodmanusa.​com/

Forgot there's more than one option. I have the HoodEYE Cup.