Zsolt Arkossy Posted November 10, 2009 Share #1 Posted November 10, 2009 Advertisement (gone after registration) Hello everyone! Can anybody using an M8.2 tell me if there is in the menu a manual lens detection list (as in M9)? I know that there is an automatic lens detection option, but I am more interested in the manual (list based) detection option - say if I buy an uncoded old Leica lens, can I select from the list and use it without being physically 6 bit coded? Also another question on lens detection - am I right that the benefit of the coding is: 1. having in the EXIF data the lens info 2. for JPG (and NOT RAW!) vignetting/UV cast correction many thanks an M8.2 wannabe Link to post Share on other sites More sharing options...
Advertisement Posted November 10, 2009 Posted November 10, 2009 Hi Zsolt Arkossy, Take a look here M8.2 Manual lens detection list. I'm sure you'll find what you were looking for!
adan Posted November 10, 2009 Share #2 Posted November 10, 2009 Manual lens list in M8.2 - no. Many want it in a firmware upgrade - Leica says it ain't gonna happen. 1. yes 2. incorrect - vignetting and/or IR filter corrections via the lens coding are needed for RAW as well. In all of Leica's digital Ms. For lenses wider than 50 mm. Link to post Share on other sites More sharing options...
Zsolt Arkossy Posted November 11, 2009 Author Share #3 Posted November 11, 2009 Thank you very much Andy for the advice! I shoot only in RAW and I use Lightroom on a Mac - how will the RAW converter "read" the 6bit coding info? Is it embedded in the DNG file itself and after loading in the application will apply the vignetting/IR info automatically? Link to post Share on other sites More sharing options...
adan Posted November 12, 2009 Share #4 Posted November 12, 2009 No, the CAMERAS (M8, M8.2 & M9) do the vignetting/corner color correction on the fly before saving the RAW file (or jpeg - either one). RAW files are generally not as purely "raw" as they were 5-10 years ago, from any manufacturer. The camera reads the 6-bit coding (if available, and if lens recognition is turned on), adjusts for the cyan corners caused by the internal and external IR filters, or for general vignetting, by adding red or overall lightness to the corner pixels according to patterns for that lens created by Leica from tests and stored on-board, and then saves the result to the SD card in the format you've selected. Other than that corner correction, though, the DNG files are still a raw format: you set the WB, sharpening, exposure, contrast, overall calibration, other lens corrections (like CA, if any) and so on in your preferred raw converter. But they have already been corrected for vignetting and IR casts before they even get to your SD card. The raw converter doesn't have to do anything - except for the usual RAW processing stuff. Link to post Share on other sites More sharing options...
Zsolt Arkossy Posted November 12, 2009 Author Share #5 Posted November 12, 2009 Many thanks Andy! I thought that the 6bit coding is useful only if you shoot JPG and has no impact at all on DNG/RAW. Thank you for the clarification! Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.