Archived posting to the Leica Users Group, 2006/10/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]overall, i really think this was more of a marketing move, as the raw software shipped with this camera does not do anything with the info and this is also true for adobe photoshop. so the only benefit for this is in-camera jpeg. On 10/11/06, Frank Filippone <red735i@earthlink.net> wrote: > Wonderful report, thanks Seth.... Glad to see the gnomes are more happy > with their employment future..... > > Let me focus on one issue,,, the lens coding..... > > Seth said.... ", because of > the oblique angle at which light rays from shorter focal length lenses > reach > the sensor, Leica has placed before the sensor a device that adjusts the > rays to reduce or elminate that effect. The code on older lenses tells the > camera what adjustment is indicated for that focal length. I have been told > that this is more important for lenses under 50mm, that the deleterious > effect at 50mm is not too great and at the longer focal lengths, the lenses > probably do not really need the coding."... > > What this implies is that Leica has provided a variable doo jiggey to > CHANGE the adjustment ( of oblique angle rays) from 21mm to > 50mm for example. The lens provides the code to tell the camera what > adjustment is required. > > This could be done in one of 2 ways..... physically through a changing > optical device, or through SW where an algorithm is employed > to change the value of the bits based upon the lens coding and placement > of the bit on the sensor. We used to call this > pre-distortion. > > I'll bet on a SW solution..... > > > Frank Filippone > red735i@earthlink.net > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- ------------------------------------- regards, mehrdad