I got my copy of "Understanding Exposure" on Saturday and have been so excited to read about a third of it so far. I hope you don't mind me rambling a bit to share some major enlightenment it's given me -- which won't be news to anyone here, but it's so helpful to me!
One surprise from my reading so far is that it's helping me understand the differences between my point-and-shoot and DSLRs, which both encourages and discourages me at the same time!
For example: I have really been frustrated that even when I'm shooting as wide open as my camera will go (f/2.8), there are times I am just not achieving anything close to decent bokeh. It's been driving me nuts! So yesterday, I was shocked to read in UE that an aperture of f/8.0 on a P&S is the equivalent of f/32 on a DSLR -- so when I'm shooting wide open, it's more like a DSLR shooting at f/8.0. It's not that you can't get some bokeh at that level, it's just that the really creamy, soft bokeh that I see here is so much harder for me to achieve. That encourages, in that I know it's not my fault, and of course discourages because I would sure LIKE to be able to get that. But understanding my camera is so helpful! I guess it makes sense because with the larger sensors on DSLRs, you would expect that the aperture openings would be proportionally sized too.
I also learned that when my lens says it's 6.0 - 72mm, it's not really, not in 35mm equivalents. But I don't quite understand, when talking about DSLR lens, are the numbers given (i.e. 18-75mm) a 35mm equivalent, or what are they exactly? I always feel a little lost with the lens info.
Another question I have from reading it is, do DSLRs show your focal length on the display when you're shooting? My camera clearly does not, and I've always been mystified as to how to know your minimum shutter speed when you change your focal length.
Lastly, and not related to UE, but curious to ask: do you think that DSLRs generally produce sharper images than point-and-shoots? If so, is it a quality of lens thing?
Forgive the long rambling post, and TIA for anyone who has taken the time to read this far and to answer!!