Sony HVL-F42AM - Manual (Page 22)

GB 22
Applications
Zoom flash coverage
Auto zoom
This flash unit automatically switches optimum flash coverage (zoom flash
coverage) to cover a range of focal lengths from 24 mm to 105 mm when
photographing (auto zoom). Normally, you do not need to switch the flash
coverage manually.
The auto zoom is working when the Auto ZOOM lamp is lit up in green. The zoom
is not displayed on the display panel when the Auto ZOOM lamp is lit.
• When a lens having a focal length of less than 24 mm is used with auto zoom,
ZOOM lamp [WIDE] blinks. Use of the built-in wide panel (page 24) is
recommended in this case to prevent darkening at the periphery of the image.
Auto zoom control optimized for
image sensor size
By using a Sony digital single lens reflex camera, other than the DSLR-A100, with
this flash unit, the flash unit will provide optimal flash coverage according to the
image sensor size (APS-C format/35 mm-format) of the camera.
24 mm focal length 105 mm focal length