Canon CP-E4 POWER FLASH 580EXII

It is true that when one is in a photo shoot and we use a lot of Flash Canon EX II flash eventually have a cooldown longer and longer. Although with rechargeable flashes have made ​​much progress, we can turn to solutions with external batteries to increase the performance of flash. There are solutions at Quantum fairly heavy weight and sometimes a little expensive. Canon offers a solution with CPE4 is a box in which you put 8 batteries, it connects by cable to flash. You can fix or below your camera or on your belt. I think the fix in the box is not very practical, it is a little big for it and holding of the case is not very practical. It is better to belt, there is a small detail that is not terrible not to be able to detach the cable from the CP-E4. In terms of performance I think it brings a real plus especially if you tend to shoot at full power and you want to have a fairly short wait time. Be careful though cobra flashes are not made ​​to have a sustained pace too. They eventually heat up and you may damage them. Sometimes the pace down but this is not due to lack of battery protection but trying to avoid the overheating. It costs about 190 €. I advise you to put good rechargeable batteries like these for example.