Dick Roadnight wrote (of the Eyelike sharpness indicator):- >It measures contrast
> I am not familiar with the Sinar focus assist. Hi Dick, The Sinar focus assist does the same. The video assist with the detail window is so good though that there's really no need to use it ( but then I've never have been a great fan of 'auto focus' either :-) ) > >When I saw Stuart at Robert White a few months ago, there was a one >point system, but he said that, about now, they were going to introduce >the simultaneous three point system, so you can select any three points >in any plane and simultaneously get numerical values for the sharpness >of all three points - Ideal for setting up a view/monorail camera (like >a Sinar) > >For use with a Sinar yaw-free monorail you would try to find points on >the yaw-free axes to focus on. Yep,with the Sinar system , you focus on the marked axis in each plane ( viewable in video assist mode ) , then simply pull the rest into focus using the movements. So one focus assist is fine as you can move it while the first point stays sharp. > >It would be possible to design a semi-robotic camera that would >tilt/swing about any axis, and automatically put the plane of sharpest >focus through those points... it would be nice to make it a PhD project! Think you'll find that Sinar went along this route this many years ago with a production model, but it never really took off. Any lurkers care to comment ? Regards, Bob Marchant. =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
