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With modern digital cameras (DiMAGE 5, 7, 7i, 7hi, A1, A2, A200, Dynax/Maxxum 7D and 5D, Sony Alpha DSLRs) TTL-OTF metering is not possible. This has a number of consequences:

• For flash metering either ADI, pre-flash TTL metering or manual flash must be used. This means that only D flashes, the new macro flashes and Sony flashes are fully compatible with digital cameras. These are marked with “yes” in the “digital ready” column of the flash table. Earlier flashes only work in manual flash mode.
• Wireless flash with ratio control is not available with the built-in flash. A possible workaround is using two remote flashes, positioned at different distances from the subject. You can trigger both remote flashes with the built-in flash, but the built-in flash will not contribute anything to exposure. Wireless ratio flash is possible with the HVL-F58AM and the Sony α700 and α900.
• A dedicated flash mounted on the camera (other than the HVL-F58AM and HVL-F20AM with the α900 or α850) can not act as a wireless controller.
• Older non-D flashes will not fire in wireless mode, even when they are in manual mode.

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© 2009 Michael Hohner; This page was last changed on 2009-09-12