Sorry for my English...I don't have much experience with digital cameras.
Right now. I'm building a Website and I'm creating a zoomed-in image like this, where mousing over a smaller image displays a larger version above in a bigger window. So, I'm working with two versions of each image: a small one and a big one.
The big image has a resolution of 1280 x 854 pixels.
My question: now I'm looking to buy a cheap digital camera (on e-bay, I found a Kodak EasyShare V1233 (12,0 MP)), what is the minimum resolution I need for the big image?