Hi Sabyasachi, Something wrong here? You say that all images are opened up by four stops, means the 100 % crops shown here actually represent four stop highr ISO. I mean, for example, at ISO 1000, opened by four stops, the image seen here is as if shot with four stop higher ISO, i.e. ISO 16,000. But this image here shot at ISO 1000 is exceptionally clean. Very clean... isn't it unusual?