Originally posted by barondla The Sigma has auto motorized zoom head. Anyone know if the format is selectable between crop and FF? If not, can the head be manually zoomed?
I have a copy of the EF 530 DG Super manual and it indicates that the zoom function works the same as on my EF 610 DG Super. The camera coordinates auto-zoom and for APS-C will apply crop factor when used with auto-focus lenses. FF cameras set the actual focal length. Unlike the AF 540 FGZ, neither Sigma flash has provision to manually set format for APS-C, 35mm, 645, or 6x7.
Steve
Last edited by stevebrot; 10-09-2019 at 09:37 PM.