-carbon fiber or Ti body. hell my inexpensive tennis racket from Walmart is made from a Ti carbon weave. it cost like $30-40 weights nothing, is super tough. really, get it done canon.
This is a joke, I presume.
I assume as much; titanium and carbon fibre in any meaningful application does not change hands that cheaply.
Dunno, how much metal is in a tennis racket compared to a camera body? I found a titanium racket at Amazon for $35.
I could be convinced otherwise but I expect marketing had more to do with titanium mentioned in the context of the racket than engineering. It could be titanium whiskers in the matrix of carbon fibers to essentially pin the layers together, in which case it would be a fairly small proportion by weight. (Then again it could be white titanium dioxide paint.)
Titanium sheet alone is miserably expensive never mind anything cast and machined from it.
The relevant question is whether either material would make a meaningfully better body; magnesium is affordable and easier to cast and machine than titanium. It also conducts heat and electricity well enough to be useful; titanium conducts both poorly. Carbon fiber isn't really suited to the job of filling fine details and supporting many threaded bosses.
I'd like everything to weigh less, but I'm pretty sure Canon's engineers have a solid grasp what works and is still reasonably affordable. I would dearly like to sit in on their brainstorming though...
ETA - If I was going to machine a tennis racket out of anything I'd try beryllium; it'd be heavier and your machinist might get lung cancer but it'd be stiff