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This past weekend I was taking some indoor snap shots usinga 430EX on top of my 50D. I was shooting in manual at f/8 and 1/60 and 100 ISO. The flash was set to E-TTL II. With this setup I was lucky if I could get a shot off every 3 seconds which made it much more difficult to catch the moment. I do realize that f/8 @ 100 ISO in a poorly lit room will require a lot of flash but I would rather give up a stop or two of ISO as opposed to lowering my aperture due to depth of field.


I have two questions:


1) Would I have dramatically better recycle times if I cranked up the ISO to 400?


2) Would upgrading to the Speedlite 580EX II be worth while as it relates to recycle time? My father-in-law was using one with his 40D and was able to take shots in rapid succession where I was waiting for my flash to prime (sorry, I do not know what his camera settings were)
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