Here you go: http://www.heliconfocus.com/pages/index.php?focus_overview And it's cheap! BTW they are on this same topic at the digital black and white list. Thanks for the FFT info - well, er... way over my head :-) AZ Build a Lookaround! The Lookaround Book, 4th ed. Now an E-book. http://www.panoramacamera.us > -------- Original Message -------- > Subject: Re: no subject - new camera > From: karl shah-jenner <shahjen@xxxxxxxxxxxx> > Date: Fri, November 25, 2005 8:11 pm > To: List for Photo/Imaging Educators - Professionals - Students > <photoforum@xxxxxxxxxxxxxxxxxxxxxx> > > ----- Original Message ----- > From: "Roger Eichhorn" > > > : Indeed it does explain everything. I suppose they're using an FFT on > : the digitized data. I wish I knew how to do it! > > > .. then we could pop a microlens array between the lens and the *film* in a > film camera, scan the resulting image and perform the same trick with film > media ? > > that'd be nice! > > > > http://en.wikipedia.org/wiki/Fast_Fourier_transform > > fft info - I like this explanation: > > "By far the most common FFT is the Cooley-Tukey algorithm. This is a divide > and conquer algorithm that recursively breaks down a DFT of any composite > size n = n1n2 into many smaller DFTs of sizes n1 and n2, along with O(n) > multiplications by complex roots of unity traditionally called twiddle > factors" > > > k
