There seems to be a bit confusion about this issue (the manual is not very clear in this aspect).
But the LX works like this: 1) The LX has an auto sync feature, i.e. sync speed is set automatically. 2) Clearly, the sync speed cannot be set automatically when the shutter is set at any mechanically controlled speed (i.e. 1/75-2000 and B). In this case you will get partially exposed pictures. 3) sync speed is set automatically when the shutter is set to any electronically timed speed i.e. auto and 4-1/60 sec. That means when you set the shutter at a slow sped, the shutter is set to the auto sync speed (i.e. 1/60sec). Thus, you don't get a slow sync setting in this way (***this is different from the super-pro and ZX-5***). 4) Slow sync. speed is set on the flash. There is an MS setting somewhere on the flash for this (this is a full manual setting, it is not a TTL setting!!). 5) For a slow sync speed setting with TTL flash you need either the the flash grip M (it has a separate switch for slow sync speed) or, as a work around, insulate the right dedicated contact (i think) on the camera's hot shoe or the dedicated contact situated next to the lens mount at the front of the camera body (flash cable connection). In this case the auto sync feature will be disabled (you also won't get the flash ready confirmation in the viewfinder) but the TTL flash will work (so Aaron is right) ... Enjoy, Alexander Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/ - 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 .