great, we've got a flamewar! let me join the fun: i'm very much unconvinced by their examples re: lens blur or generic sharpening. it has the typical fourier artifacts (even though the ringing seems surprisingly well balanced in their examples. but i can still see it). i think our current local contrast tools would do a similar job.
the motion compensation looks nice though. i'd probably rather implement the multi-frame merging technique that morphs multiple short exposures to match up and then creates a hdr from that. cheers, jo On Thu, Apr 27, 2017 at 2:24 PM, Moritz Mœller (The Ritz) <virtualr...@gmail.com> wrote: > On April 27, 2017 2:03:47 PM Roman Lebedev <lebedev...@gmail.com> wrote: > >> Are there any actual use-cases for this algorithm, specifically in >> darktable? >> > > Did you bother opening the webpage (relaunch.piccureplus.com) the OP gave > and looking at their example section? > > Do you think we don't have landscape, wildlife, insect, etc., etc. > photographers using DT? > > Or just ordinary people who have that odd holiday shot with great > composition, light and everyone smiling but being oh-so-slightly out of > focus? > >> I'd imagine 95+% of blurred images/images with motion blur >> where that is not intentional, would be deleted and not processed.. > > > And where did that number 95%+ come from? Some bodily on orifice? I refrain > from making an educated guess here from which -- to avoid foul language. ;) > Just because you can't imagine it, Roman, doesn't mean it doesn't exist. :) > > To give you an example, to the contrary, based on actual numbers: > > If you do low/available light (no flash) photography of people that move > (wedding photography, social dance photography, parties, events etc.) you > will usually have a ton of images that could be great if they only could > have a bit of blur (motion and/or focus) removed. Because even with fast > glass and high ISOs you will need exposure times that are too slow for the > motion depicted. > > In my case, I photograph tango and swing dance events. > I shoot with a f/0.95 lens on an A7II body. There are no lenses of this > speed that have autofocus. And even if they were, the focussing would be too > slow. By the time the camera had hunted the focus down, the moment were > gone. > > So I need to track focus and motion (of dancers) manually, at the same time. > Usually 10% of the images have either sharp focus or no motion blur (both > absent are less than 1%!). > > Aka: at /least/ nine out of ten of these images would benefit from this sort > of deconvolution magic. > > Beers, > > .mm > > > > > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
