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Sigma Electronic Flash EF 500 DG Super

EF_500_DG_Super_Flash
Review Date: Feb 21, 2005 Recommend? yes | Price paid: $199.00 | Rating: 9 

 
Pros: Good value for money. Faster recycle time in comparison with 550 EX.
Cons:
Can not fire high-speed flash sync (FP Mode) with Canon D-SLR (300D, 10D & 20D)

After using Sigma 550 DG Super for 2 months, I discovered that the flash unit can not can not fire in FP mode (high speed flash sync) with canon D-SLR (the 550 EX can)

With 300D, 10D & 20D, fill-in flash is very inconvinient because the flash can not fire speed higher than 1/200s