Go Back   Steve's Digicams Forums > Digicam Help > Flash (External)

Reply
 
Thread Tools Search this Thread
Old Jan 29, 2005, 7:26 AM   #1
Junior Member
 
Join Date: Dec 2004
Posts: 6
Default

Will using an external powerpack help improve the flash recycle times of the 580ex and 420ex ? If so, which powerpacks do you suggest? The Canon ones or a 3rd party? ADive much appreciated. THnaks
DigitalEyeBall is offline   Reply With Quote
Sponsored Links
Old Jan 29, 2005, 11:42 AM   #2
Senior Member
 
sjms's Avatar
 
Join Date: Jul 2002
Posts: 2,735
Default

substantially. depending on you distance to subject. at full output manual it takes about 1.75s to recycle with a 40w DCB and DCBZ580 cable.

http://www4.pbase.com/crusader/image/39033286

depending on iso and distance to subject in auto again the output and recycle will be variable

example: eos1d mk2 with above mentioned system at iso 400 approx 15 ft from the subject (32) images at 8fps within a 1/3 stop (in a controlled environment) and the pilot light will not go out . ambiant light will also play a large factor in that too.

warning: the use of a system like this if overdone can/will reduce the lifespan of your strobe and high rate/high powercontinous output can under certain conditions cause physical damage to the strobe head or capsdue to overheat.

the output of a external batt to your strobe thru the HV input is 320-330 vdc

i don't believe the 420ex has a HV input so that lets that one out.

http://www.digitalcamerabattery.com/



sjms is offline   Reply With Quote
Old Jan 29, 2005, 9:08 PM   #3
Junior Member
 
Join Date: Dec 2004
Posts: 6
Default

Thank you ..most helpful
DigitalEyeBall is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 8:58 PM.