quote: This falls out from the basic physics involved, a larger sensor gathers more photons which improves the signal to noise ratio.
quote: Using High ISO numbers are not in themselves detrimental to image quality. You have to compare overall image quality.
quote: The F-stop number of the lens is determined by the ratio of the aperture size of the lens vs the image sensor size. Sensor size and big glass are why DSLR image quality is so much better than point and shoots.
quote: So what you term a 'slow' f2.8 may not in fact be slow at all in the system.
quote: What f-stop of the lens does directly effect is depth of field control. F2.8 should give a pretty good depth of field range.
quote: Non-interchangeable lens? Well that's a preference call depending on how you use the camera. Most people don't take the kit lens off their DSLR. I'd be willing to carry the G1X a lot more often than my DSLR.