"Peifer, William [OCDUS]" <[EMAIL PROTECTED]> wrote: >OK, so if >you want a color sensor array, you have a few design options.... >Option (1): Throw out all of your existing lens designs, and redesign from >scratch. However, keep in mind the following constraints from geometric >optics; that is, > -- Photons travel in straight lines, and no lens design will make them >travel through free space to the image plane in curves; > -- Light falloff for spherical optics goes as cosine to the fourth >power. > >Option (2): Keep all your time-tested lens designs, and save all the money >you'd spend on new designs, new tooling, etc. Spend this savings on >designing a better lenslet/filter array to incorporate on top of a >monochrome CCD. > >I think I'd go with Option (2) if I were that worried about light falloff >with extremely short focal-length lenses.
There's a third option too, at least in the case of chromatic aberration: Software. There's already software for Photoshop to correct chromatic aberration (read about it at http://www.luminous-landscape.com/chromatic.htm). In the future, I wouldn't be surprised to see similar software built into digital cameras. A software approach to image stabilization wouldn't surprise me either (so *all* your lenses would become expensive "IS" lenses). -- Mark Roberts www.robertstech.com - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
