On Tuesday, July 5, 2005, 10:21:36 AM, David Young <telyt@xxxxxxxxx> wrote: DY> The big problem with a 1280mm lens combo, is the incredible lack of Depth of Field. The depth of field should be the same as it would be with this lens and a converter on 35mm fullframe.....as I understand it the DOF is a factor of the optics, the 1.6x factor from the Canon camera is simply a croping factor, not optical. This is why when shooting a lens like a 35mm that gives you about a 50mm perspective you still get the dof of the 35mm lens, same is true on the longer end. FWIW -- Harrison McClary Harrison McClary Photography http://www.mcclary.net harrison@xxxxxxxxxxx ========================================================= To Unsubscribe: Send email to leica-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field. The acknowledgment that you then receive MUST be replied to per instructions. You may also log in to the Web interface to unsubscribe.