shutter speed, f-stop and fps ?

[Gateruner]

Ok so a battery pack will help alot but there is a setting on the 580EX that allows the flash to fire before it is completely recharged. I dont have my manual with me right now or I would post the actual setting changes. Essentially this lets the flash fire again when it is only half charged. Naturally the output is lower so you have to be aware of that and adjust your camera setting accordingly. This is not burst mode which fires like a strobe light. Also, the manual will tell you that after so many shots without allowing the flash to "cool off" you could damage the flash. Sorry I cant post the actual setting change on the flash right now but i will try to remember later when i get home. It is fairly easy.

[JackInTx]

I have the same combination of camera and flash, and experience the same problem: the more shots I take in rapid succession, the longer the delay when recharging. Larger aperture and shorter shooting distances, as suggested above, improve the recharge time, but I just gave in and bought an external battery pack: the Quantum Turbo 2x2 and I think that will resolve my flash issues for a long time to come. Haven't had a chance to play with it yet, but that is in the agenda for this weekend!

[sbp]

Originally Posted by JackInTx

I have the same combination of camera and flash, and experience the same problem: the more shots I take in rapid succession, the longer the delay when recharging. Larger aperture and shorter shooting distances, as suggested above, improve the recharge time, but I just gave in and bought an external battery pack: the Quantum Turbo 2x2 and I think that will resolve my flash issues for a long time to come. Haven't had a chance to play with it yet, but that is in the agenda for this weekend!

Please let me know if it works or not. I am thinking to buy one.

[zeroendless]

The canon cp-e3 , one that Andrew mentioned is brilliant. Cheap, light weight, thin and take 8xAA battery. For a big event, load up extra AA battery and spare a few, switch it out as needed.

It been the choice for many wildlife bird in flight shooter for fast recycle time, used to be the Quantum. I have two of them, the size is easy to slip one in your pocket.

With all the batteries you can get on the market, you still can't shoot 5bps. It may work for the first 10 shots when the batteries are fully charged. Try 3bps. That's the mode i am using for flash.

[sbp]

Originally Posted by zeroendless

The canon cp-e3 , one that Andrew mentioned is brilliant. Cheap, light weight, thin and take 8xAA battery. For a big event, load up extra AA battery and spare a few, switch it out as needed.

It been the choice for many wildlife bird in flight shooter for fast recycle time, used to be the Quantum. I have two of them, the size is easy to slip one in your pocket.

With all the batteries you can get on the market, you still can't shoot 5bps. It may work for the first 10 shots when the batteries are fully charged. Try 3bps. That's the mode i am using for flash.

I still can't think how that guy was doing it. He didn't had any extra pack with him just four battires in flash plus one on side.

[rogerfsmith]

With brand new batteries (alks), the flash will recycle to full power in 2 to 4 seconds if you used a full power flash. But what usually happens, is that a full power flash was not needed. As a result, the flash does not have to do a full recycle but only enough to fill the capacitor. So if you are close to the subject, and using a wide aperture (2.8-5.6), and/or at higher ISO, then you'll get more flashes in burst mode. I have the Canon 20D and a 420ex flash. I can often take 2 or 3 shots in a second in a wedding, for example, as the bride comes down the aisle. The shutter speed is not particularly relevant unless you are trying to make significant use of the ambient light.
Cheers,
Roger

[sbp]

Originally Posted by rogerfsmith

With brand new batteries (alks), the flash will recycle to full power in 2 to 4 seconds if you used a full power flash. But what usually happens, is that a full power flash was not needed. As a result, the flash does not have to do a full recycle but only enough to fill the capacitor. So if you are close to the subject, and using a wide aperture (2.8-5.6), and/or at higher ISO, then you'll get more flashes in burst mode. I have the Canon 20D and a 420ex flash. I can often take 2 or 3 shots in a second in a wedding, for example, as the bride comes down the aisle. The shutter speed is not particularly relevant unless you are trying to make significant use of the ambient light.
Cheers,
Roger

I guess I need 2.8 lense. I have 28-105/F4. But I will test with 70-200