Thanks for the input. In terms of DSLR model, I'm just thinking Canon's current EOS models (i.e. do any of Canon's current DSLRs have a function that behaves like the AE Lock button does on the G12 in Manual Mode). All the manual descriptions of AE Lock (or YouTube videos) show what I experience using AE Lock in P Mode, but not what I experience in Manual Mode.
I understand that Manual Mode is just that, manual. The manual controls are what attracted me to the G12. When I first started using Manual Mode, I used the dials for shutter, aperture and ISO exclusively. I discovered the convenient functionality of the AE Lock button quite by accident.
What has me confused/curious is that the functionality of the AE Lock button in Manual Mode is quite different than functionality in P Mode, or on other DSLRs that I've fiddled around with.
Anyone have both a DSLR and the G12 that can compare it directly to see what I mean?
Here's what I do with my G12:
1. Set the Mode Dial to M.
2. Point the camera toward my subject, and press the AE Lock button (*).
3. The shutter and aperture automatically adjust to "optimal" settings.
I can repeat these steps as much as I want, whether or not I take a picture in between. Each time I press the AE Lock button, the shutter and aperture adjust to the circumstances. I still have full manual control via the dials at any time. The AE Lock button just gets me close really fast.
I see how this would be a feature to help a beginner, but I also see how this can be a time-saver for when lighting conditions change rapidly. Of course, being a somewhat of a beginner myself, that may be why it would seem useful to me but not to a pro...
If any of the EOS DSLRs have similar functionality in Manual Mode, it would make my transition a little easier.