So, coupling lenses you already own with an actual 35mm film-sized sensor is the only way to have full use of the focal length values you bought in the first place. Unfortunately, such sensors are astronomically expensive right now. But that's not the only path open to manufacturers, opines Canon's Westfall. By developing less-expensive, more powerful sensors in the smaller size, manufacturers could perhaps afford to also design a new professional lens line to maximize the full potential of the smaller chips. Whether you're a newbie or digital diehard looking to upgrade, you may be confused by the constant flux of innovation.
Some features are real boons, some are plain superfluous and much of it is a judgment call.
Here's a quick jog through the Digital Tech Lexicon Jungle. Rotating LCD Monitors . Great for places where you can't see the viewfinder. Memory Card Reader . An add-on purchase.