Открих нещо, което може да се окаже полезно. Още не съм го пробвал, но хората казват, че работи.
PK_Tether allows connecting and controlling Pentax cameras from the PC. The list of currently supported models include: Pentax k-x, K7, K5, k-r, K20D, K10D, K200. In the program, it is possible to:
set camera parameters like: shutter speed, aperture, ISO, image format and others
remote release shutter
save photos directly on computers hard drive
periodically release shooter for time-lapse photography
http://www.pktether.com/