T3D Re: digital camera resolution

[michaelk@xxxxxxxxxxxxxxxxxx (Michael Kersenbrock)]

> To really KNOW, you want to inspect a 2D fft of the image and filter in
> the frequency domain before using the inverse 2D fft to return to the
> image domain.  I wouldn't worry unless you are doing scientific or
> technical work.  There is software that does this, and NIH image or PC
> image ( the latter is the Windows port of the NIH Mac package) are both
> easy to use and free.  Easy is relative.
> 
> Remember the filter must be a "real" filter unless you are looking
> forward to imaginary results  <grin>.

Just a comment that the digital camera article mentions that the
cameras *do* have an optical nyquist filter up front.

Mike K.


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