On 29/03/2011 13:05, Olin Lathrop wrote: > Three reasons I didn't chose the D3X (20+Mp) over the D3S (12+Mp): > > First, from the little technical information available, it seems the D3X > does not have the same low light performance, even after you filter the > larger picture down to the same size as the D3S. Remember, a factor of 2= in > pixels only means a factor of 1.4 in each dimension. Ideally the next worth while step above a 12MP is a 48MP with a=20 somewhat larger sensor, probably alternate rows offset by 1/2 pixel and=20 cleverer design of sensor cells with less non-sensor dead space in each=20 pixel. A 20MP isn't quite 1.4 times resolution, yet has a much higher % of =20 dead space per pixel, hence can't compete with state of art 12MP using=20 same design rules. Of course any significantly larger sensor needs a different lens family=20 :( and much bigger camera. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .