Tom Diaz
Well-known
My consideration of what Adam may need is tempered by my training as a teacher. Children can develop long-term interests with fairly complicated subject matter (like exposure) yet one doesn't want to delay too long the rewards of photography, e.g., digital feedback. I believe that even adults need more immediate feedback if they are new to photography and that film cannot provide this, unless perhaps you can also experience the magic of an image appearing in the tray!
I will NOT buy anyone an M9. I am leaning toward a used DSLR. However, I would like a SIMPLE DSLR, much like the simplicity of the M9. Does such a digital DSLR exist?
Given that you're a Leica owner and are probably going to share some picture taking with him, I second the suggestions for a Panasonic G1 (or G2 or G3). They're simple enough. They have full manual override. They do a very good job with Leica lenses if you want to go there. (The magnified manual-focus assist probably would be interesting, rather than too complicated, for your sharp nephew.) They have a list--a growing list--of excellent lenses of their own. They have a nice swivel mounted LCD as well as an electronic viewfinder, so you can put it on the ground and take pictures of ants on the march. (If you get him a G2H or G3 he could take HD video of ants on the march.)
Et cetera. A good-condition used G1 is a very inexpensive purchase. You could buy about 10 brand new G3 bodies for the price of an M9 body.
I'm also a teacher (occasional photography teacher of middle school kids) and agree that bright young people will stay interested in photography quite a long time if you give them some guidance--give some interesting assignments and let them run with them. Offer, for instance, to let him send you a picture every week or two, and you'll send back a big print.
Tom