Archived posting to the Leica Users Group, 2006/10/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank, I've posted a couple of unanswered queries on this previously. My interpretation of Leica's info release was that the correction data was stored within the RAW file, like white balance information and could be used or disregarded. Does this make sense to you? I know Mehrdad, I think, tells us that there is no provision to address this info in the Phase One software with the camera. Cheers Hoppy -----Original Message----- From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On Behalf Of Frank Filippone Sent: Thursday, 12 October 2006 16:11 To: 'Leica Users Group' Subject: RE: [Leica] LHSA meeting in Wetzlar; Leica Camera AG If you need to predistort to allow oblique rays to present with higher gain, then this is done in SW using a location algorithm in the camera before the data goes for storage. Essentially, you change the gain dependent on where the pixel is on the sensor array, therefore upping the gain for pixels that need it. I repeat, this would be done before the storage of pixels in the ADC that converts the electrically stored energy from analog to digital values for the computer. The RAW ( and all other) data would have already been corrected for gain. We did this years ago for correcting certain optical sensors that had to have flat gain across the array. It is really pretty easy to do. Mind you, I have no inside information at all on the workings of the M8. Of course, I could be wrong and it is all marketing hype...... Henning, did you get to try the M8 with coded and uncoded lenses of the same type? For inastance, the 24ASPH from a few years ago uncoded, and the same lens, but coded? Frank Filippone red735i@earthlink.net _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information