I love using Hasselblad's meter prisms on my camera. Magnification and automatic adjustment for filters makes the whole process a pleasure. Trouble is, my second one has just gone on the blink. I was using one of the fantastic (and very expensive) PME 45's with 2.5 X magnification, but it gave up the ghost last year. I switched to a less complicated (and much less expensive) PME 51's with 3X magnification but now that one has gone south as well. Apparently its an LED failure in both cases. After much research it seems that these meters are virtually impossible to fix. I've yet to try Hasselblad in New Jersey, but if anyone has other suggestions I'd like to hear them.