Hello, I just received a AF280T by the post, I figured out most of the things except these: Slide switch with : Auto TTL = LX compatible TTL mode Auto (green) = F8@100ASA High power auto setting (use the eye to measure) Auto (red) = F4@100ASA low power auto setting (use the eye to measure) MS (H) = All power available ??? MS ( ) = 1/12 of the power ??? M = ??? What is the A.check green lamp ??? What is the Finder A.Check stitch ??? I have the 24mm adapter how many F stop does it cost ? If I understood right this is good for 28mm without filter and 24mm with AFW1. In auto mode (red and gree) there is a W (wideangle ??) and T ( Telephoto??) at + and -1 stop... is this about filters or without filters ??? if it is without Filter, where is Telephoto starting (85mm ??) and where is Wide angle starting (35mm ??) Philippe - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .