There has been discussion in the “Your Move Nikon….50mp?” thread about how much resolution we actually need or want. Snakebunk suggested renaiming that thread to “Too Many Pixels”, which gave me the inspiration for this thread.
Want and need are different. I commented that nobody “needs” more than what is provided by an IPhone and that the rest is “want”. However, if you are a professional, “need” may take on a very real importance as clients may demand a certain resolution. Please try to distinguish between what you “want” and “what” you need in the discussions. For me, it is all about “want”, as I do not earn any significant revenue from photography.
Also, let’s assume that if you want or need a hundred megapixel camera, that you have a lens that provides this resolution, as most or even all FX lenses will not. Since reliable, cross-brand comparable and consistent resolution information is not available for lenses, let’s assume that if you say a 50MP lens, you mean that the lens resolution equals a 50MP camera. Of course, to really nail this point you will need to specify what apertures you are talking about as lens resolution varies by aperture. This paragraph is probably a good sub-topic in and of itself.