![]() Enough that the lens would be useless for architectural purposes without the profile, but still pretty good for landscape work. For example, my 16/18/21 Tri-Elmar has a fair amount of distortion if I don't apply the profile. These lenses weren't meant to NEED correction, but they may still benefit from it. Since the lens designer can't assume much of anything about how the lens will be used, aberrations like distortion and chromatic aberration are generally better controlled in the lens than in situation 1 above. Typically, this is used in situations like the "M" cameras where the same lens might be used in lots of different cameras-from an M3 to an M(240). Someone (Adobe? Leica?) creates a profile that is available in Lightroom and the user chooses whether or not to apply the profile. This is how distortion and chromatic aberration corrections are made for most "M" lenses. The corrections are not applied automatically-the user must choose the correct profile (though Lightroom will often default in the correct values). The combination of camera and lens can then be used to manually choose a "profile" in Lightroom or any other software package to make corrections. This is becoming more and more common since it allows the camera/lens manufacturer to design the system as a package, and you can end up with better overall performance if you don't need to make all corrections in the lens.Ģ) The camera manufacturer can simply make sure the image is tagged with the lens and camera used. For that matter, so is the use of "R" lenses on the SL camera-the corrections themselves are embedded in the file. The "Q" is an example of this type of approach. However, the recent trend is for camera manufacturers to consider these corrections "mandatory", i.e., the design of the lens/camera assumes that these corrections will be made in software since otherwise the overall image quality would be noticeably inferior. Some other raw software readers will only apply these corrections if you want. Lightroom will apply these corrections automatically when the image is imported-they are not optional in Lightroom. By lens corrections, I mean distortion, chromatic aberration, and (optionally) vignetting.ġ) The camera manufacturer can figure out all the information required to correct the image and tag the DNG or RAW file with the actual corrections themselves. There are three ways that lens corrections can be dealt with in Lightroom.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |