Im getting very inconsistent flash exposure results in ETTL mode, whats wrong?
A11: This question has little or nothing to do with Wireless Flash photography, and is way outside the scope of this document. Basically, it has to do with the way the Canon ETTL flash metering system works, and some common misunderstanding that most aspiring hobbyists, and even some professionals have about the system. 95% of all ETTL exposure problems can be traced back to the camera user having recomposed the scene (moving the camera) after pressing the shutter button half way, and allowing the camera to meter the scene. The short answer solution to this problem is: NEVER, NEVER recompose a scene after allowing the camera to meter it. Use your camera body custom functions to link metering to the active focus point, and move the active focusing point to reflect the part of the scene you want in focus. Since the Dxx bodies to date only have three focus points, and they are not often where you need them to be, you must learn to use the Flash Exposure Lock function on the camera body. T
