Last edited by rockstarsouth21; 9th December 2009 at 02:18 PM.
what it does is just minimize you from pressing both exp comp button and turning the dial at the same time..so if this feature is turn on, you turn the "other" dial to adjust exp compensation..so if you are in aperture mode, the "shutter dial" will adjust compensation and vice versa for shutter priority mode thus in effect it's like you are overriding the shutter and aperture given by camera
Last edited by gimumancer; 9th December 2009 at 02:50 PM.
Not sure if anyone mentioned this already.
If you're in AV mode on a Canon, the flash will ALWAYS act as a fill light and not as a main light, so the camera will always try to expose for the ambient and the flash merely acts as a fill via eTTL, hence you're getting a really slow shutter speed as the camera tries to expose your background and ambient properly.
Switch to manual mode instead or go to your custom function settings that says "Flash sync speed in Av mode" and choose 1/250 (or 1/200 depending on camera model). It'll lock your shutter speed at its highest sync speed and let the flash be the main light.
Though it's easier to use eTTL flash if you're in Manual mode.
If you want to read more about it, click this link and scroll down to the section that says:
Av (aperture priority) mode flash.
Av mode lets you set the depth of field by specifying the lens aperture. The camera then chooses a shutter speed ranging from 30 seconds to the camera’s X-sync speed, in order to expose the background correctly. If that means the shutter speed is some really low value so that you need to use a tripod to avoid camera-shake blur, so be it. In dark conditions, therefore, Av mode works in slow sync mode.
Last edited by theveed; 9th December 2009 at 02:57 PM.
keep at it man! Yr next wedding session will be much better, i'm sure.