a quick "aps-c size" sensor question...

[bobjackson]

hi,
i'm looking to get a canon 40d in a month or so and i'm wondering about the sensor crop issue. i know that the aps-c sensors crop the image and give lenses the 1.6x magnification (or 1.5x). but i was wondering, is what you see through the viewfinder when you're composing a picture what you'll see in the final saved image? or is the live image that you're seeing in the viewfinder what the image looks like before the cropping takes place, and the image is cropped somewhere between me seeing it in the viewfinder and the picture being saved to the card.

i don't know if i worded this right. it sounds kinda confusing when i read it back.

the question is pretty much: with the canon 40d, is what i see in the viewfinder the same as what the picture will look like when its on a computer screen (crop-wise, not quality or colour). or will the picture that i see on my computer screen look like a cropped version of what i was seeing in my viewfinder?

hopefully this makes sense.

on another note, has anyone had any issues with the "err99" problem or whatever it is with the canon 40d? plus another issue where the frame-rate drops to 1 FPS for no reason. i've recently heard i bit about it online.

thanks in advance for anyone that can help.