I dont know if the Olympus SP35 had an AE lock but it had a spotmeter. With the 43mm the Mamiya7II meter acts like a spotmeter. Other than that I don't know of any current RF's with that feature.
I just got an Olympus 35UC and it has a spot meter function. Only it, the Leica CL and one other RF camera that I can't remember the name of, have spot metering.
What do you mean by AE lock? Like a button to push?
I forgot, I also want exposure compensation dial. So for example, at a wedding I may decide the brides face will be consistantly exposed on zone 6. I set expsoure compensation on +1 stop then in spot mode just point camera at brides face and press ae lock, re-compose and shoot.
I can do this on my contax aria but is there an RF camera out there that I could use in this way.
The zeiss ikon has it all except the spot metering. The leica doesn't have spot metering.
I guess spot metering is not so easy on an RF camera because there is no mirror or prism to catch some light from. But if some cameras can do OTF metering then why not spot metering off the shutter?
Quite right, but when in those situations where I spotmeter a part of the scene and recompose and/or compensate I find it much easier to just use manual mode, then again YMMV and that wasn't your question
Kind regards
spot meter and ae lock 
Linear Mode
