Imaging recource: Sigma lights the way with new EF-630 flash

Sigma continues to announce new products during this week's CP+ show in Japan. In addition to a pair of new lenses and new mirrorless cameras earlier this week, Sigma has also announced a new EF-630 electronic flash. The new, more powerful flash includes numerous reported performance improvements over the Sigma EF-610 flash, including rear curtain flash and wide angle illumination capabilities. The new Wide Panel can provide light for photographers using focal lengths as wide as 17mm. Compatible with most digital SLR cameras, the EF-630 includes TTL...
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