This a website about photography, photographic optics, and digital signal processing. Its main purpose is to illustrate lens faults and other phenomena observed in photographic images. I am not professionally involved in photography, optics or web design; this website is just a hobby project with new material appearing at an irregular and slow rate. In daily life I work as an underwater acoustician.
Remarks or questions can be addressed to the e-mail address mentioned below. Perhaps your question is already answered by the faq. The probability of your e-mail being read increases if you choose a clear subject. "Hi!", "Hello!" or "Thanks!", for example, are poor choices as automated and manual spam filters are uncompromising.
All contents © Paul van Walree—all rights reserved.
You may use fragments of the contents for noncommercial applications, if the origin of the material is properly referenced. Commercial use of material, or integral copying for publications, requires explicit approval of the author. In case of doubt, why don't you consult the faq or just ask?
Last update of this site: April 21, 2014.