This is one of those questions that always comes up when new photographers are asking what camera they should get. When you consider how much the advertising for digital cameras seems to focus on the number of megapixels, it’s not really surprising, but still a bit unfortunate, because it gives the impression that one must have the camera with the most MP to keep up.
The truth of the matter is, when we’re talking about digital photography for dentistry, in particular, any DSLR since Canon came out with its Digital Rebel (6.3MP) back in ’03 has been totally adequate.
BTW – I still use the same 100mm macro lens that I bought with that Rebel back in 2004, so it may be reassuring to know that you won’t need to keep upgrading lenses every few years.That’s one of the keys to quality pictures that most people don’t understand: it’s more important to have quality lenses than a camera with high megapixel count for sharp, clear, colorful pictures.
So the simple answer to the question? Any digital DSLR that has ever been made has more than enough megapixels, so don’t worry about that at all. 🙂