I bought a used Canon 135mm F2 from B&H and it came with a EW78C lens hood. Which is a pedal hood. Not the ET78II which is the correct one.
The EW78C fits and actually looks better. But I'm not sure if it will provide the amount of flare protection that's needed.
I havent noticed any issues but I haven't shot with it a lot yet. Anybody have experieance with this combo?

