Have I been ripped off?

Charles2 wrote:

You apparently did not look at the pixel dimensions in the specs before you bought. The SD1M is 4800 x3200. The Nikon D800 is 7360 x 4912.

The SD1M has an APS-C size sensor. The Nikon D800 has a "full frame" size sensor (= 35mm film).

The Nikon D800 captures either red or green or blue at each pixel. Neighboring pixels are used to calculate an R,G,B triplet at each pixel. The SD1M captures the red light, the green light, and the blue light at each pixel (Foveon sensor).

No one of these specs, nor all of them together, tells you the image quality, which depends on the resolution, the color gradation from one pixel to the next, the dynamic range, and more.

General opinion is that at low ISO, the SD1M delivers better image quality than the D800. Some people say they are about the same. Fewer people say the D800 delivers better IQ.