I use PDF if I am porting to adobe program

I don't use SVG a lot except for simple black and white lineart, but I know there can be issues - it is probably best to convert everything you can to editable shapes before you export, as mentoned by egg [who does use SVG a lot]

rasterisation is the conversion of vector to bitmap - it will happen to everything when you edit using photoshop [as opposed to illustrator] - the issue may be the resolution of that rasterisation for things like shadows