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View Full Version : online flash tutorial/resource?


ghostman
5th of May 2007 (Sat), 00:51
Hi,

I recently got a 430EX to learn flash photography. The only problem is, I have no understanding whatsoever about it. I never used the built-in flash on my XTI either. I read the manual, but aside from telling me how to put the flash into certain settings, I don't actually know when to use those settings or how it works. And I'm having a hard time finding the tutorials I need online.

You'll probably think my questions are dumb, but here are a few:
- I normally take pictures in Av or M mode. If I take a picture of a cup in a dim kitchen without flash, it'll tell me that I need a slow shutter. Say, 1 second. Now, with the flash, I take it that the camera will now tell me that only a 1/2 sec shutter is necessary. Is there a way to force the flash to be brighter and allow me to use, say, 1/50 sec shutter (without changing my aperture) to allow me to handhold it?

- Say I'm taking a picture of a person with direct flash using Av or M. I then meter, get a shutter speed of say 50 sec, and take the shot. Now, I shift the flash to bounce off the ceiling. If I meter the same scene, will my camera still tell me to use a 50 sec shutter speed (because it's the same scene) and leave the photo underexposed? Will the camera use a 50 sec shutter and automatically adjust flash brightness to compensate? Or will the camera "know" it's no longer a direct flash and compensate by requiring a longer shutter?

- And are there rules as to where I'm supposed to meter off when using flash? Do I still meter, say, a subject's face? Or do I meter the background and let the flash fill the face?

See. I'm horribly confused. I've only had a chance to play with it for 15 minutes so far, so I clearly have lots to learn. But does anyone know of any good Flash Photography Howto to get some firm footing before I randomly take pictures and figure things out?

vetkrazy
5th of May 2007 (Sat), 01:02
Just go to the top of this forum: sticky.....EOS Flash

Franko515
5th of May 2007 (Sat), 01:03
Read here, this may help you out.

http://photography-on-the.net/forum/showthread.php?t=138907

JWright
5th of May 2007 (Sat), 12:41
http://photonotes.org/articles/eos-flash/

2gDSM
6th of May 2007 (Sun), 11:13
Simple answer--flash photography is two exposures. Meter off your background, and your shutter speed/iso/aperture will be used to expose that. The foreground (subject, person, etc) will be exposed by the flash.

If you wanted to make the flash your primary source of light however, you must shoot in manual mode.

gemini6474
7th of May 2007 (Mon), 13:55
nice thread, i just got the 430ex a couple days ago, i think ill be printing off a few of these links to study up on.