I have used firmware version 1.1 and 1.2 with OS 1.3 and 10.4.5 without problems. Iphoto does not download RAW or DNG files from either firmware version, Photoshop does without problems. ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: //www.freelists.org/archives/leicareflex/