Archived posting to the Leica Users Group, 2012/11/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Each morning I drive my son Sam to school. That means 30 or 40 minutes in stop start traffic but we get to chat uninterrupted. Sam was with us in Barcelona and got to meet Ted for the second time. This time walking around with us once or twice when we were all shooting. Today I was telling him about the amazing technology in the newest Hasselblad cameras that I saw last night. I had explained some basic sensor theory and was then talking about the auto-focus systems. You point the one centre AF spot at the eye you want sharp, lock the AF and then recompose. The camera uses accelerometers to measure how much the camera angle changes and adjusts for the difference in the arc where the sharpest plane is. Then it compensates for errors in the field flatness of the individual lens and some systems can predict if the subject is moving too. Then the camera corrects out other optical errors. I explained that Leica M's have no auto focus systems or accelerometers or predictive systems at all Sam listened with interest since he enjoys technology and science. After all of that Sam said, "how come Ted can just point his camera, without even looking sometimes and get great shots?" Jeesh!. Cheers, Geoff http://www.pbase.com/hoppyman