I recently purchased a 580EX II for my 50D and would like to primarily use it for fill flash in outdoor portraits.
When I first begin shooting, the flash fires very consistently and the recycle time is great. No waiting time is required between shots. After about 50 photos, the recycle time becomes very noticeable, approximately 4-6 seconds. After 100 shots, it is really noticeable.
I am using the Nimh batteries that came with the flash and bougt 8 additional Nimh batteries for when the recycle time becomes very slow. After switching batteries, I experience the same thing as mentioned above.
After consulting with my manuals and other specifications, I saw that I should be getting approximately 400 photos per battery life.
Is there a certain setup on the 580 that could give me faster recycle time? Is there batteries that could give me faster recycle time? Any help or insight would be greatly appreciated.
Thanks in advance!