Will you be able to see whats going on in regards to aperature and DOF through the LCD screen before you shoot ?
Yes. Mine does. In several ways. You can set it for full-time/part-time DOF preview and full-time/part-time pre-exposure preview. I have mine set for full-time DOF and part-time pre-exposure.
So I see the DOF the image will be taken in but fully bright. Then with a 1/2 shutter press I see the actual darkness or lightness (exposure) that the shutter+aperture+ISO with produce. After I take the shot I see the results immediately in the EVF without having to remove my eye. I can look at the results for 0sec (feature turned off), 2sec. or 10sec. each of which can be immediately terminated (returning me to live view) by a shutter 1/2 press. Additionally while it's showing it to me a single button press will delete it if I choose - so it becomes a keep-or-kill decision phase if I wish to look at it that way.
This is actually very nice as I can see the DOF and/or zoom up on a focus point in manual focus to nail it in lighting conditions where if I pick up my F3 and look through the pentaprism the view is so dark I can't see squat.
The EVF on the A2 can and very often does actually amplify the available light. For night photography it automatically goes into a high-gain B&W mode which is fairly close to my night vision goggles in terms of brightness and resolution.
The one place I
might prefer to use a pentaprism over an EVF is outdoors
bright daylight sports photography. Fast moving cars, following a soccer ball in a down-field kick while standing on the side-lines, etc. My EVF is 30fps at about 1 million pixels or 60fps at 1/2 that - but there are some things I think the human eye performs better at when dealing with natural light frequencies. I don't get any of the advantages of an EVF that way but it might occasionally be
slightly more comfortable. It's only a comfort thing for the most part though where my EVF is darker than the BRIGHT daylight and human eyes need about 1sec. adjustment time. I guess other EVFs may not suffer from this depending on the design. I know my expensive video cameras didn't.
LOL I posted a similar opinion in another thread recently (can't find it right now)- so I agree.

I still have a Minolta A1, which is a great camera with a very nice EVF.
Yeah, from the outside that looks like the same EVF as the A2. If it is then yup, it's pretty nice! :thumbup: It's nowhere near as good as a broadcast camera's EVF though! So even as good as it is there's lots of room for improvement! The new Micro4/3rds camera... what is it, the Panasonic LUMIX G1 or something, begins to bring some of that technology into the dSLR arena. Personally I think they should make them detachable so that I could put my $3,000 EVF from my video camera on it if I wanted.
