Completely agree - you're actually arguing my original point. That's why I personally use all the EF-M lenses, and a couple of third party manual focus ones - a 50mm f1.1, and an 8mm f2.8 fisheye. I could use my Canon equivalents, but they're huge and heavy - although their performance is very far from compromised, as they're L lenses (50mm f1.2 and 8-15mm f4). The point was simply that if people want to use long lenses, they can, very simply, and they can port those lenses to any Canon system. Personally, I find 200mm (320mm FF equivalent) long enough for this system for what I use it for, but it works well enough as a backup. I think it's broadly where Nikon wanted the 1 series in terms of lens adaptability in reality, but with a better (for me, and much of the market, apparently) performance to size ratio. I do wish Nikon had done the same as Canon, because that would have stirred up the crop market a fair bit more. As it is, Canon have a particular niche more or less to themselves; they and Nikon are tackling the rest of the crop market through the RP and the Z5 IMHO, and I think that's wise.