Canon shouldn't make any more specific ef-m lenses in my opinion, i say this as a huge fan of the m, eyebrows may raise, so here's my logic:
- The m is already well served with all feasable focal lengths. you want more than 200mm? You don't want a pocket camera
- The lenses that exist are modestly priced, okay, lacking l's or super fast apertures, if you want those you really want an slr
- at the moment the m is effectively discontinued in the us and eu. no m2. m marked down and selling out. we need a new m model, perhaps with more external control etc to suit more advanced users also
- I think the key to the success of the m system is the gateway to the ef-s and ef system. The ef-m basics are well covered. I would like to see a lower cost canon branded adaptor, perhaps ef-s only, and made of plastic (strong enough to handle the existing ef-s lenses, all consumer grade) say for £30 rather than £100' or even free in the box...., if folk want access to ef then let them pay more, or give then a deal when buying their mX
I would guess that the majority of folk in eu or us are buying an m to augment their eos system.
- i would rather see canon get back to making more lower cost primes, if nikon can make a g grade 35mm f2 then why can't canon (anymore) the old 24 28 and 35 were super, compact, cheap, perfect for ff ef, users, accesable to the rebel market, and adaptable to the m (and still compact, even with adaptor)
At this exact moment in time, the m looks like a dead end in western markets. Don't get me wrong, I love mine (bought a second yesterday) but I feel its greatest success will be acheived as a gateway camera to an established and well serviced system (upper hand over nex, m43, nx etc)
The m system has enough of it's own lenses that are specific to the m, the real value for me lies in adaptability, and better budget offerings from Canon, which they did once, which nikon can do, and which would enliven the health if the ef system as a whole and have a trickle down for the m.