WPF - World Photography Forum
Home Gallery Register FAQ Calendar Search Today's Posts Mark Forums Read

Welcome to World Photography Forum!
Welcome!

Thank you for finding your way to World Photography Forum, a dedicated community for photographers and enthusiasts. There's a variety of forums, a wonderful gallery, and what's more, we are absolutely FREE. You are very welcome to join, take part in the discussion, and post your pictures!

Click here to go to the forums home page and find out more.
Click here to join.


Go Back   World Photography Forum > Photography Technique > Flash Photography Technique


Canon Flash users. HELP please.

Reply
 
Thread Tools
  #1  
Old 03-11-09, 17:46
Don Hoey's Avatar
Don Hoey Don Hoey is offline  
Senior Member
 
Join Date: Dec 2005
Location: Norfolk
Posts: 4,462
Question Canon Flash users. HELP please.

I would be greatful if you could help answer my question posed in post 3 of Brians 'Three Flashgun set up advice'

Thanks in advance

Don
Reply With Quote
  #2  
Old 03-11-09, 18:59
Don Hoey's Avatar
Don Hoey Don Hoey is offline  
Senior Member
 
Join Date: Dec 2005
Location: Norfolk
Posts: 4,462
Thumbs up

Looks like I have found the answer.

An extract from this link : In manual mode (M), Canon compacts such as the Powershot G5 switches off the pre-flash (and thereby E-TTL). This makes it feasible to use plain optical slaves, that otherwise are disturbed by the pre-flash. This has the unfortunate side effect that E-TTL can not be used to control the power of the flash in manual mode (see p. 101 in the Powershot G5 manual for details)

Link
http://dpanswers.com/canon_flash.html#nettl

Yeah ........ spent most of today on this one.

Don
Reply With Quote
  #3  
Old 04-11-09, 10:35
yelvertoft's Avatar
yelvertoft yelvertoft is offline  
Guest
 
Join Date: Dec 2005
Location: North Essex, UK
Age: 59
Posts: 8,486
Default

Don, I think the pre-flash is a common problem with most digital cameras and flash. I found that even if I switched to fully manual mode on the camera, the built in pop-up flash would still give a pre-flash, which, as you say, precludes the use of cheap optical peanut triggers on remte guns.

With my "Yellow plus Blue" shots, I found my synch lead wasn't long enough and had to use my Metz 58 on the hotshoe, set to fully manual mode (this turns off the pre-flash trigger), triggering a simple "peanut" on a very cheap/old flash in full power manual mode. Power output from the remote gun was fixed at full - the only setting available. Light output to the scene was varied by changing flash to subject distance.

Hope this helps someone.
Reply With Quote
  #4  
Old 04-11-09, 18:10
Don Hoey's Avatar
Don Hoey Don Hoey is offline  
Senior Member
 
Join Date: Dec 2005
Location: Norfolk
Posts: 4,462
Default

Duncan,

I have posted a new thread so it can be easily found for the future, on Wein optical slaves that will work with pre-flash.

Re your set up then I do similar when using slaves - camera on manual and flash on manual. Not a prob for me as I am ancient enough to automatically calculate manual power settings. Brought up in the world of flash before i-TTL, ETTL etc

Don
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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 Off
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 22:33.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.