RVsForFun
TPF Noob!
- Joined
- Mar 20, 2007
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I was perusing the new Canon advertisement that came with the Rangefinder magazine and it mentioned the new 580EX II flash for Canon cameras. One odd addition to the flash is an independent flash sensor, just like flashes in the 70's (e.g., Vivitar, Metz, etc.). What is the independent sensor for?