“Any sufficiently advanced technology is indistinguishable from magic.” – Arthur C. Clarke
Gently, you squeeze the shutter release. You hear a satisfying “clack” and your DSLR captures the perfect slice of time. As if by magic, an image appears on the camera’s LCD and gets written to a flash card. We don’t know how all the parts work together, but we’ve come to accept that they do – and we expect they’ll keep doing it, over and over, for hundreds of thousands of clicks.
But beyond the electronic gadgetry that we see, DSLRs are mechanical marvels crammed with complex movements. It’s impressive how they can mass-produce a device with so many moving parts, at a relatively “cheap” price, and still deliver the long-term reliability and accuracy we’ve come to expect.
Bit Twiddler's Rant 