Neues Spakulationsmaterial für die Pentax Besitzer.
http://photorumors.com/2011/01…m-f3-3-5-6ed-if-sdm-lens/
Zitat:
Pentax filed a patent for a high-powered zoom lens DA*25-350mm F3.3-5.6ED [IF] SDM:
Patent application: 2011-8234
Release date: 01/13/2011
Filing date 05/22/2009
Focal length: 25.71-339.99mm (13.22 zoom ratio)
Aperture: 3.3-5.7
Angle of view: 4.8-60°
Image circle: 28.48mm
Back focus: 52.92-108.59mm
lens length: 174.86-281.04mm
Internal Focusing
Interessant finde ich die Angabe "Back focus: 52.92 - 108.59mm". Ist so eine Angabe bei einem Patent normal?