alan davus
Well-known
I bought the Megaperl 1.15 magnifier from Dirk in Japan for my M6 ttl .58. Wanted it mainly for the adjustable dioptre function and for that purpose alone, it is brillant. It screws in tightly and the dioptre ajustment is very firm-no chance of it being accidently moved. Also I can still see the 28 frame lines which means it stays on permanently. For me, although expensive, it is an absolutely best buy. Highly recommended.