Megapixel Myths is an introduction of digital cameras, probably useful for someone new to the genre and looking for a new camera.
This Megapixel Myths site is a lot more involved – the author goes over many aspects of digital vs film photography, including the costs of each..
Let’s look at two scenarios to see how the cost of digital and traditional photography balance out over the first year. Notice that I said cost, not value. Cost is the total amount of money you spend. Value is what you receive in return. Cost is empirical; value is subjective.
My camera has probably halved in value in the year that I’ve owned it, but if I had a nice 35mm film camera it may not have gone down in value so much! (That said, film cameras are getting cheaper as digital becomes more popular!)