Originally posted by kmurphy220 I like the mirrorless because it allows me to just keep buying every lens ever basically and use all of them and have amazing glass for the whopping highest price of $35. (most I ever paid for a lens Kiron 28-70 macro *well worth it*) but I have yet to use an EVF.
evf vs. ovf is the big question that will remain unanswered, if you wait for still yet another pentax ovf camera.
i shoot the a7r exactly as you outlined above; i have around a dozen cheap adapters, and i've put dozens of lenses on the a7r, no native glass at all... i could have never done any of that with any ovf camera... pick and choose the best glass from any manufacturer, no single company has it all, including canikon.
the a7r, with it's 14.4x evf magnification, is better for mf use than any of the other a7 series cameras, probably even including the a7rii, which is limited to ~12.2x magnification... but of course they all blow away any ovf camera for mf use.
the big problem with cheap wide legacy glass on any companies 36mp ff body is that much of it won't stand up to serious pixel peeping, so regardless of which road you take, i'd suggest looking at what the sony a7 series people have done, and spend the money on proven solutions.
that would include some pentax 28mm primes... then buy a cheap adapter, rent an a7r for the weekend, and judge for yourself.
---------- Post added 08-31-15 at 11:00 PM ----------
Originally posted by audiobomber It's strange that you are touting Sony over Pentax for lens selection. The only native telephoto lens for Sony FE is a 70-200mm f4. Pentax has a 70-200 f2.8, 150-500mm f-4-5.6, 300mm f4 and 560mm f5.6, plus numerous third-party choices.
the 560mm f5.6 is $5k at b&h, there is no k-mount 150-500mm f/4-5.6 listed at b&h, and i'm not going to bother looking for the rest of the non-existent glass that's on that list.
what IS available for sony right now are the 150-600mm zooms, $1069 at b&h, they af with adapters, or with cameras like the a7rii, sensor-based af... a7rii is but the first step in that evolution, so even if i get one of those zooms for my a7r, it'll be just that much better with the a9, or whatever the next iteration is.
can any ovf camera do that? and where is pentax on eye-tracking?
currently, there are more ff lenses available right now for a-mount, than there is for k-mount, including f/2.8 zooms... we've counted it up in past threads.
in terms of primes, pentax can't match the pq of the fe55/1.8 and the new fe90, and they will never have a motorized parfocal zoom like the 28-135... not even canikon can do that.
there are options with sony.