AvTvM said:
Declining market demand for big fat mirrorslappers and pressure on profits will accelerate the industry's move to solid state, fully-electronic cameras, without any mechanics or moving mirrors on them.simply because it is so much cheaper to manufacture, quality control and service mechanics-free products.
I suppose you think those tiny high resolution micro-displays are dirt cheap? Try $50 and up just for the microdisplay - many times the cost of a mirror box.
We, as a civilization, are incredibly good at constructing mechanical moving devices. The engine in your car cost less than $3,000 to manufacture. My son's micro quadcopter, with 3-axis IMU, receiver, battery, battery charger, transmitter, carbon-fiber structure, and four miniature motors cost less than $40 at retail, meaning it probably cost less than $10 to manufacture, including the four motors. I buy servos with a motor and a 5-stage gear train for less than $20 retail.
Mirror boxes are very inexpensive devices to manufacture, as are pentamirrors and pentaprisms. That's why you can have $400 SLRs that include far more than a viewfinder, like the whole rest of the camera. Microdisplays require very expensive fabrication technologies much like chip fabs, and you still have to make all the viewfinder optics anyway.
And, by the way, the mirror boxes and AF optics aren't carefully tuned, they're calibrated electronically during manufacturing to account for varying optical path length.