bob_carpenter1 Posted May 21, 2006 Share Posted May 21, 2006 My wife owns the 5D she just upgraded from the 20D. Shes having problem with the regeneration speed on the 580EX. Shes using the canon 24 -70 and a tameron lenses. It seems she'll snap a picture and it seems to take forever for the flash to regenerate. This was never an issue with her 20D. She shoots in M and P mode. I'm just trying to help the misses out, so any suggestions would be helpful. Link to comment Share on other sites More sharing options...
bob_carpenter1 Posted May 21, 2006 Author Share Posted May 21, 2006 BTW, she said she tried opening the aperture up from 800 to 1600 just for kicks and that didnt seem to help either. Link to comment Share on other sites More sharing options...
yanglee Posted May 22, 2006 Share Posted May 22, 2006 Are the batteries new? Link to comment Share on other sites More sharing options...
jeff_louie Posted May 22, 2006 Share Posted May 22, 2006 I am having no problems with the 5d and 580EX. BUT I do believe that the 580ex is smart enough to take into account the APS sensor size on the 20D so there will be a wider angle of illumination at 24mm on the 5d than there is at 24mm on the 20d, hence less light intensity. Link to comment Share on other sites More sharing options...
caesar Posted May 22, 2006 Share Posted May 22, 2006 Check the batteries. Battery age/strength will greatly influence flash recycle time. Link to comment Share on other sites More sharing options...
matthewkane Posted May 22, 2006 Share Posted May 22, 2006 I just shot a weddding with this combo two days ago. You're recycle time is BAD because your batteries are out of wack. Try 2500 MAH NiMd batteries. "Nickle Metal Hydride". Mine lasted for a good two and a half hours of shooting frequently. Cheers Link to comment Share on other sites More sharing options...
mark u Posted May 22, 2006 Share Posted May 22, 2006 If fresh batteries doesn't solve the problem, it suggests that there is a slow or intermittent short circuit in the camera's flash shoe due to a faulty component or poor soldering. That is, assuming that a) you get similar behaviour on the 5D using a different flash, and b) the 580 still behaves well on a different body - otherwise, a fault has developed in the flash itself. Try to establish which it is before getting warranty service for the affected item. Link to comment Share on other sites More sharing options...
bob_carpenter1 Posted May 22, 2006 Author Share Posted May 22, 2006 She uses energizer batteries and she replaces them right before her shoot. Would nickel batteries make a difference? Link to comment Share on other sites More sharing options...
sravan Posted May 22, 2006 Share Posted May 22, 2006 Rechargeables make a huge difference. Get the 2500 ones and they will last much longer too. Link to comment Share on other sites More sharing options...
awindsor Posted May 22, 2006 Share Posted May 22, 2006 Bob, Alkaline batteries have much higher internal resistance and slow recharge time. Rechargeables will not only be cheaper but will recycle faster. Link to comment Share on other sites More sharing options...
paul_mcevoy Posted May 22, 2006 Share Posted May 22, 2006 Also the crop factor may be some difference...for a given frame, the flash has to work...what?...1.6 times harder? I'm not good with math, but it will be quite a bit difference. Link to comment Share on other sites More sharing options...
rhaytana__tim_adams_ Posted May 22, 2006 Share Posted May 22, 2006 I agree that changing batteries could make a big difference. Also -- although this might be off base -- it couldn't hurt to change custom setting 8 on the 580ex to enable quick flash with continuous shooting. Details are in the 580ex manual. Link to comment Share on other sites More sharing options...
john_schwaller Posted May 22, 2006 Share Posted May 22, 2006 One other possibility...most shots never use the full flash. Do you have the CF-8 on the 580 set to enable (=1) "quick flash". That way the flash will fire even if not fully charged...which many times is more than enough to get the shot. John Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now