It makes sense that 75% size reduction (if it's linear) leads to a 50% effective light sensitivity reduction. If we interpolate further what will the sesnitivity of a sensor with 2 micron sensors be? 50 ISO?
The effective sensitivity depends on the pixel area, since the quantum efficiency of the sensor is constant as well as the noise introduced by the temperature of the sensor chip. To me, it seams like the sensor only makes sense if their planning to cool it down, as some astronomers do. But even then it requires large apertures and very good lenses.... DagT > Fra: "Herb Chong" <[EMAIL PROTECTED]> > i just received an announcement of the release of the Nikon Coolpix 5400 in the US. > that is more or less the direct replacement to the Coolpix 5000. the newer camera > has 5.4 megapixels versus 5 megapixels. the most interesting thing is that the > sensor on the new camera is about 75% of the size of the older camera. this is > enough to reduce the maximum ISO rating from 800 (which was marginal anyway) to 400. > Nikon is doing it in a released commercial product. who else? > > Herb... > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, June 12, 2003 05:03 > Subject: Re: 6MP - already obsolete ? > > > > I agree with the comment on that page. You get much more noise, no resolution > > improvement unless you use some expencive lenses, but maybe some improvement in > > Moire and Bayer artifacts. > > > > However, it will look good in the adverticements and brochures... > > > > DagT > > >
