Originally posted by Anvh Yeah but explain me how an optical viewfinder that doesn't use any power is less power efficient then an OLED screen?
Will you think they will make a screen that actually generate power?
OVF doesn't use any power, but moving the mirror and shutter does. Also, driving the actuator requires the camera to charge a capacitor, more power is wasted there. Want more FPS? Faster shutter speeds? All those require more power-hungry, less efficient components.
It's not just one component, it's the whole design. The bottom-line is that solid-state has the
potential to scale much better than a mechanical design. Just look at the revolution of solid-state storage, compared to old, mechanical media (computer HDDs, magnetic tapes, etc.)... And all those new media use just a fraction of the power, since there are no movable parts (no spindles, no gears, no power lost on friction).
Unless you're an engineer, I think there's little we can add to the topic.