[arghwhat]

No - it's "single-lens reflex", a single attribute without comma. That is, a mirror redirecting light from a single lens to different targets (viewfinder and film/sensor).

If "four out of five words" was good enough, then an analogue film camera is also a DSLR - it's only missing the "digital" part after all. Seahorse and racehorse is also just one word apart, so basically the same, right?

[fooker]

> an analogue film camera is also a DSLR

Funny you say that, as this is where the term originated.

Electronic (as opposed to mechanical) control of focus and controls were called ‘digital’ long before the advent of digital sensors.

[arghwhat]

The digital camera was invented in 1968, the first auto-focusing SLR is from 1978.

Auto-exposure came a few years before auto focus, but not by much as it still required not only light metering but also multiple mechanical couplings to the lens.

Such cameras (like the famous Canon A-1) were never refered to as "digital cameras", and SLR was used to distinguish from rangefinders primarily.