Hello and many thanks to the darktable team, I use darktable on at least 2 GNU/Linux computers, with devuan ascii, Ubuntu 18.04 & 19.04 and debian buster. On debian buster already darktable 2.7.0+1662
Since I've got the lens Tamron SP 70-200 f2.8 DI VC model number A009 there was a problem with darktable (dt). dt doesn't recognize the Tamron. I have to manually select the Lens Model from the (updated) lensfun database. The exiftool does give me the following information from a picture made with the Tamron lens. I only included the output with the keyword "Lens": exiftool 613A5345.CR2 | grep Lens Lens Type : Sigma 24-105mm f/4 DG OS HSM | A or Other Sigma Lens USM Lens Electronic MF : Enable After AF Lens Drive When AF Impossible : Continue Focus Search Lens Info : 70-200mm f/0 Lens Model : TAMRON SP 70-200mm F/2.8 Di VC USD A009 Lens Serial Number : 0000000000 Lens : 70.0 - 200.0 mm Lens ID : Unknown (255) 70-200mm Lens : 70.0 - 200.0 mm (35 mm equivalent: 110.4 - 315.4 mm) The part "255" of the "Lens ID" is used in dt als lens model. As I said, I can select the lens manually. It looks like the "Lens ID" with 255 is used more than once, it looks like the Sigma 24-105 f/4 does have the same "Lens ID". Is there a chance to get this corrected? Because that is not the only dual use of a Lens ID as far as I know. I used to get around by this. Storing and applying a preset with the Tamron Lens. Only until I found out, that does the correction with the focal length of the preset, not with the actual focal length of the picture it is applied onto. The check "only when applying" doesn't make the the preset option any better in this case. Having to store a preset for every mm of the focal length from 70 to 200? I hope the Tamron 18-400 does have a unique Lens ID. The behavior (only when applying) is pretty genius with most of the modules. But in the case of lens corrections, I think there should be the choice "only apply lens model" and take the focal and f-stop settings as found in the exif data? Or is there a lack of understanding on my side? Thank you for the fish, Ralf ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
