My first digital camera, a Canon PowerShot A60 had an optical viewfinder. It was tiny and would show the wrong area, i.e. what you see is not what you get, it's not even level. I ended up using the display all the time.
Originally posted by unfocused Several posters have said the market wants a digital Spotmatic/K1000. Agreed. Pentax provided one in the *istDS... small, lightweight, gorgeous pentaprism viewfinder, no clutter, great handling. For those reasons I still prefer using it to my K-7 and K-r. All it needs is an updated sensor. It could have become the modern, timeless classic.
The DS is only 25g heavier than the weird and far less useful K-01, and slightly bigger. This is not to say that the K-01 is basically a bad idea. I'm sure it's a move in the right direction but the execution is disappointing. Having to take pics with arms outstretched is poor design. If an eye-level viewfinder is out of the question (which I don't believe) at the very least the rear display should be hinged (if not fully articulated) to allow the photographer to work at waist-level. Making it look like a dSLR when it isn't, is the ultimate stylistic nonsense.
Someone else has reminded us that the rangefinders of the 1970s/1980s set the standard. I still have my Yashica Electro-35 GTN and GX, Konica Auto S3 and Minolta Hi-matic E, all with superb f1.7 or 1.8 lenses. Museum pieces now but a joy to use. Maybe Marc Wotsisname should have taken a long hard look at what worked before.
Funny you mention the DS. That's my camera. The pentaprism viewfinder is... okayish. Of course most other cameras have even worse ones, but even with the split prism screen that I use manually focusing can be guesswork only... when it is bright enough to focus manually the AF also doesn't have a problem.
Handling wise it is ok too, although the command dial is broken (only turns to the left. Turn it to the right and it will still think you are turning it right). But I wish it had an aperture ring (ok, my lenses have) and an exposure dial. That would make it perfect, together with a 6-8 MP version of the K-5 sensor.
A hinged or fully articulated screen increases the thickness of the camera, and the K-01 is just not meant for us. The next one might be. Most if not all mirrorless manufacturers offer both a camera with and without EVF (Samsung NX10 vs NX100, Sony NEX-3/5/C3 vs. NEX-7, Olympus and Panasonic too. Remember the first 2 NEXes only had a screen, and they were very successful. That the UI is dumbed down should tell you who it is for. There is always room for a beginner/fashion audience and a high end one, and I think it shouldn't be to hard to turn the K-01 into a higher end model (add dials and viewfinder, give it a more pro like interface (like K-5 perhaps) and done).
The advantage of a fat body vs. a long mount is that it should be much easier to hold/gripf