Thanks Chris
I too noticed differences between a couple of 0.5x reducers. I have a couple from different makes, and they are very diffetent. I wouldn't necessarily say they are of different quality, but of different design, where one is better suited to scopes than the other. But the "lesser" one I've only tried in one scope type (an sct if I remember correctly). I'd like to try it in different scope types to make up my mind about it.
Alex.