Archived posting to the Leica Users Group, 2008/04/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Stasys Petravicius <stasys1@cox.net> wrote: > Doug- how is the correction accomplished? I have a couple ROM lenses. On Apr 23, 2008, at 8:57 PM, wildlightphoto@earthlink.net wrote: > Stasys Petravicius <stasys1@cox.net> wrote: > >> Steve- I'm not sure- but I think you've explained it correctly. My old >> 60 mm macro has no electrical contacts (like the new R lenses have), >> and has no bar coding as is being added by some for their M8's. >> somehow- the EXIF viewer software program pick up the data when you >> put >> your image file in to the software file on the monitor. I hope this >> helps, Stasys >> On Apr 23, 2008, at 5:33 PM, Steve Barbour wrote: >> >>> >>> On Apr 23, 2008, at 5:18 PM, grduprey@mchsi.com wrote: >>> >>>> Stasys, >>>> >>>> The M8 does not have any connections in the lenses which can read >>>> the >>>> actual aperture used. The R lenses, especially the current ROM >>>> lenses do have this connection and can read the actual aperture. >>>> The >>>> M8 can only read the info in the coding bar to record the max >>>> aperture, as there is no linkage to tell the actual used aperture. >>> >>> so the coding has nothing to do with outcome or photo quality, just >>> puts the lens into the exif...is that correct? >>> >>> >>> Steve >> > > The DMR can correct for vignetting when the lens has ROM. > I don't know. On another list Robert Stevens demonstrated the effect with his 19mm Elmarit-R, I believe with RAW files. Doug Herr Birdman of Sacramento http://www.wildlightphoto.com -------------------------------------------------------------------- mail2web.com - Microsoft? Exchange solutions from a leading provider - http://link.mail2web.com/Business/Exchange