Optical flash trigger.. question - Page 2
PhotoCamel: Your friendly photo community, with free discussion forums, digital photography reviews, photo sharing, galleries, downloads, blogs, photography contests, and prizes.
Photos of the Week Photos of the Week
 

Go Back   PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Lighting Technique

Reply
 
LinkBack Thread Tools Display Modes
Old 03-03-2008   #11
Dromedary
 
JohnC's Avatar
 
Location: Seattle, WA
Posts: 1,049
CamelKarma: 591
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: Optical flash trigger.. question

The preflash and the flash are close enough together in standard settings that you would not notice it. But there are ways to show it. Go into a dark room, look through the viewfinder, and take a photo. If you see the flash through the viewfinder you are seeing the preflash. The mirror will be up and in the way of the viewfinder for the main flash.

As far as I know, all the EX series flashes do this in ettl mode. You would have to switch to manual mode to avoid it. I didn't know that the 420 doesn't have a manual mode.
__________________
John Cornicello
Seattle, WA
http://www.johncornicello.com
JohnC is offline   Reply With Quote
Old 03-03-2008   #12
Former Camel
 
Posts: 339
CamelKarma: 34
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: Optical flash trigger.. question

Yup, my guess would also be that the sunlight simply overpowers the 420EX. Of course the medium here is visible light. To get more reliable triggering you can try 1) a stronger trigger (580EX?), 2) that aluminium foil 'catcher' to increase sensitivity, 3) wired triggering, 4) IR (infra red) wireless triggering, 5) radiographic remote wireless triggering.
This last one is of course the most expensive option.

Isn't there something in the 350D's manual about wireless triggering by the pop-up flash?


__________________
Members don't see ads in threads. Register for your free account today and become a member of PhotoCamel to open up the site's many benefits and features.
W.Smith is offline   Reply With Quote
Reply

« PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Lighting Technique »


Share this topic:

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Flash Question kb433 Photography Talk 7 02-28-2008 08:44 AM
Flash sync question nohoneythatsnotanewlens Nikon 11 01-12-2008 11:52 AM
Canon 40D internal flash trigger Sigma Super 500 DG Flash guyfromtor Canon 8 01-11-2008 10:07 AM
Question about shooting with a flash prometeo34 Lighting Technique 12 10-10-2007 09:10 PM
flash question waynedsargent Lighting Technique 2 10-06-2007 01:46 AM