Looking to improve my focusing ability, especially with wide-angle lenses. I've learned I can put a magnifier on my PME 45 prism. Sounds like a good idea. And I rather like the microprism aids on my Nikons, so it seems to me that could be an alternative, if I wanted to try just one or the other. Some have posted here they find the microprism or split image rangefinder distracting on the Hassy. Apart from that, which enhancement have you found to be the more useful or effective?