I recently picked up a 420EX and I am testing it to see if I should keep it. It seems that one of the reasons people give for having an external flash is bounce capability. I have a few questions about that.
* The ceilings in my house are rather high: up to 16 feet in the front room. Since light intensity is related to the square of the distance, it would seem that the 420EX is probably not powerful enough to use in bounce mode under a high ceiling. Correct? * If shooting in vertical mode, where should I point the flash, if I want to bounce? Do I swivel it up? Combine swivel with tilt? Bounce off the wall instead? Or should I just get a flash bracket and not worry about that? * What is the usefulness of flash diffusers in your opinion? I guess this is a hard question, because some people love Omnibounce, others are disappointed. Same is true with the Lumniquest series. * This is not a bounce question, but it is an Elan 7/420EX question. Let's say I want to use flash as the primary light source. But I also want to control the aperture. So I set the camera to M mode and set the shutter to 1/125 and the aperture to the desired opening. Question: how do I know if the flash is powerful enough to do this? It is my understanding that, in M mode, E-TTL will control the flash power such that the selected aperture results in a correct exposure. But the meter is just flashing -2 underexposure on my camera at 1/125@f/8 in a small room. The flash should be powerful enough to do that exposure, right? But what if I asked for an aperture of f/32. Will the camera or flash tell me that it is not powerful to correctly expose at f/32? Yes, I have read the flash FAQ, and it does not specifically answer this question. Thanks in advance * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
