but half the resolution of 128 elements/mm is 64 lp/mm. you're dividing by two twice.
Herb... ----- Original Message ----- From: "Alin Flaider" <[EMAIL PROTECTED]> To: "keller.schaefer" <[EMAIL PROTECTED]> Sent: Tuesday, December 02, 2003 9:40 AM Subject: Re: FA 31 mm 1.8 limited > keller.schaefer wrote: > > ks> (correct me if I am wrong). So everything that a lens can possible deliver over > ks> 64 lp/mm is wasted on the sensor by definition. The REAL resolving power of the > ks> sensor will be (way) below that due to the geometry of the sensor pixels, maybe > ks> somewhere around 40. > > According to the Nyquist theorem the maximum resolution the sensor > can sample accurately is half its resolution. This brings down the > resolving power to 32 lpmm. Roughly the same as a 2800 dpi scanner.
