[Shooty]

Zitat von alberich

michael hohner sagt folgendes:

"Simply speaking, phase detection AF sensors are CCD line sensors with split prisms in front of them. When light is focused by the lens, an activation pattern is produced by the sensors, depending on how much the image is out of focus. The camera then can re-focus the lens so that a typical in-focus activation pattern is reached on the sensors, indicating that the object you aimed on is in focus. The apodization filter in the STF lens, on the other hand, filters out parts of the light from out-of-focus objects so that the smooth transition from in-focus image to out-of-focus image is achieved (which is the purpose of this lens). Unfortunately, this filtered-out light is also the light that is used by the AF sensors. So there's no usable light pattern reaching the AF sensors, and a phase detection AF system can not work with a STF lens. That's also why you get no focus confirmation with the STF lens, because this would also require working AF sensors."

Bin mir nicht sicher ob ich das nun richtig verstanden habe.
Wenn ichs richtig verstanden habe ist das dann aber ein ganz besonderer graufilter, im vergleich zu den aufschraubbaren ... oder sagt der Text das die Sensoren einfach "zu wenig" licht abbekommen?