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| Re: EF mount's obselences |
Mirrorless cameras may have competitive image quality for static subjects,
However the tradeoff for the small size is poor ergonomics; it is very slow to change settings on a tiny body with a touchscreen, and the contrast detect AF used in mirrorless cameras can't keep up with fast moving subjects (eg sports)
I can't see SLRs going away any time soon
Small body ergonomics is the easiest issue to fix --- there's no reason that a mirrorless camera can't be made with a 1-series-style body/grip.
Technology for the other factors is rapidly catching up, and will eventually exceed SLR performance: EVFs that are bigger/brighter/clearer than OVFs (and work wirelessly off-camera); fast contrast AF that never misses focus; higher reliability with no moving parts; video-speed framerates; etc.
I expect (wild guess!) that in 5-10 years, Canon will have a "1-series equivalent" mirrorless attractive to professional users (and phase out new SLR development/production), and in 15-20 years will not support SLRs at all.