vintola Posted March 18, 2010 Share #1 Posted March 18, 2010 Advertisement (gone after registration) I am wondering, why in the EXIF there is not mentioned lens model and aperture? Camera is M9, lens Summarit-M 2,5/35 mm, FW 1.116 and the software is Aperture 2.1.4. - vintola - Edit: All other information in the EXIF is ok. Link to post Share on other sites More sharing options...
Advertisement Posted March 18, 2010 Posted March 18, 2010 Hi vintola, Take a look here Why no Aperture and Lens Model. I'm sure you'll find what you were looking for!
JTrunck Posted March 18, 2010 Share #2 Posted March 18, 2010 It is also not visible in Aperture 3.01 nor Preview in Snow Leopard. Apple has elected NOT to decode this EXIF information for their programs. The lens name and aperture is displayed in Adobe products, i.e., Photoshop CS4 and Lightroom 2.6.1. It is in the DNG files. Jim http://www.jimtrunck.com Link to post Share on other sites More sharing options...
vintola Posted March 18, 2010 Author Share #3 Posted March 18, 2010 OK. Thanks JTrunck. I thought that there was something wrong. Hope that at least the aperture is coming in the future versions of Aperture, because sometimes it is necessary information. - vintola - Link to post Share on other sites More sharing options...
holgerf Posted March 18, 2010 Share #4 Posted March 18, 2010 … Apple has elected NOT to decode this EXIF information for their programs. … http://www.jimtrunck.com That’s not quite correct. Aperture shows me the lens model for my CANON lenses. So it seem’s not be be a Apple problem alone. Best Holger Link to post Share on other sites More sharing options...
scott kirkpatrick Posted March 18, 2010 Share #5 Posted March 18, 2010 The lens type is in the EXIF data and described by standards. I have no idea why Aperture doesn't show it. The (estimated) aperture is in a part of the metadata called "Maker Notes," which Leica may describe to Adobe LR, but everyone else has to figure out the secret on their own. Fortunately, Carl Bretteville and Sandy McGuffog also figured it out, and Sandy's source code for Cornerfix is published on SourceForge, where Phase One et al can read it. Apple may have a policy against looking at other people's code, even when it is open source and under a Creative Commons license. scott Link to post Share on other sites More sharing options...
mjh Posted March 18, 2010 Share #6 Posted March 18, 2010 The EXIF standard doesn’t define a field for the lens type, just for the focal length and the maximum aperture value. The lens description, if present, is part of the proprietary MakerNotes. Link to post Share on other sites More sharing options...
scott kirkpatrick Posted March 18, 2010 Share #7 Posted March 18, 2010 Advertisement (gone after registration) The EXIF standard doesn’t define a field for the lens type, just for the focal length and the maximum aperture value. The lens description, if present, is part of the proprietary MakerNotes. Did you find an answer to how Leica manages to encode a negative logarithm (for maximum aperture 0.95 (less than 1.0 means less than 0 on a scale such as EV)? I recall from Carl's memo on Leica's EXIF and MakerNotes practices for the M8 that the JPEGs used unsigned rationals and the DNGs used signed rationals for this quantity, so looking at JPEGs may not give the whole story. scott Link to post Share on other sites More sharing options...
mjh Posted March 18, 2010 Share #8 Posted March 18, 2010 Did you find an answer to how Leica manages to encode a negative logarithm (for maximum aperture 0.95 (less than 1.0 means less than 0 on a scale such as EV)? So far I haven’t got an image file to check this, neither JPEG nor DNG. Anybody got a file to spare? Link to post Share on other sites More sharing options...
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