The following text is scanned in UNEDITED from page 19 of Sigma document F08E01042, the EF-500 Super Electronic Flash instruction manual. So the English isn't mine :-), but the answers to your questions seem to be here.
--Ken S. ===SIGMA INSTRUCTION TEXT BEGINS=== EXPOSURE COMPENSATION You can use flash exposure compensation in combination with normal exposure compensation (to control the background exposure level) in flash picture. Flash exposure compensation can be set ?3 stops in 1/3 stop increments (or in 1/2 stop increments with some cameras). . This mode cannot be used with EOS 620, 650, 700, 850 and 1000 cameras. 1. Press the SEL button and select [flash compensation Icon] 2. Press the + or - button to set the desired flash exposure compensation amount. 3. Display will stop blinking and remain displayed, after pressing the SEL button again. 4. Focus on the subject. 5. Please check that the subject is within the flash range as displayed on the EF 500 Super's LCD panel. 6. You can take the picture after confirming that the Ready Light of the flash is illuminated. . To cancel exposure compensation, please start from step 1 and choose + 0 on display. ===SIGMA INSTRUCTION TEXT ENDS=== > There's been quite a bit of discussion on the list lately about > the features and compatibility of this flash with the Canon EOS > system. It seems that Sigma have done a pretty good job making > it compatible with most EX functions including remote ability. > > I've seen nothing mentioned though about flash exposure > compensation (FEC) built into the flash. The 550EX has built in > FEC, but the 420EX doesn't. I find it much more convenient to > set FEC on the flash than on the camera body, so I'd really like > to know if the Sigma provides this. If it's provided, is it in > 1/2 or 1/3 stop increments? > > It seems that a few list members now have this flash - can anyone > give me any feedback on this? > > Regards > Gary * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
