Just got an SX-100 Mark 1B. It came with a manual for the Mark 2. BAMA has a manual for Mark 1A. Does anyone know how different the Mark 1A and 1B are? 73 Bob WA2UEH -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.12/192 - Release Date: 12/5/2005