Hi, Nikon's D-lighting is actually what darktable calls "shadows and highlights". Just one shot, reduce the exposure on highlights and increase it in shadows when generating the in-camera JPG.
Michael: if you want to do "HDR" as in "image with a dynamic range too large to fit in a normal jpeg but small enought to be captured by the camera's sensor", then darktable has all you need. Use any combination of shadows and highlights, global tonemap, tone mapping. If you mean "image with a dynamic range too large for the camera's sensor", then you have to shoot several pictures using exposure compensation in your camera (or exposure bracketing) to take typically one -2 EV, +0 EV, +2 EV or so. Then darktable can combine several RAW files into one (lighttable, group "selected images", "create HDR"). The algorithm it uses is pretty basic and cannot do image alignment, hence you need a (good) tripod. You can also use Luminance HDR to generate an HDR (i.e. a single image that combines several shots, but has a dynamic range too large and shoud be tonemaped to be viewed properly) image and import it into darktable to do the rest of the processing. Regards, Owen Mays <[email protected]> writes: > Hi Michael, > > I believe the D-lighting is using sensor gain (ISO) or post-processing > on brightness values to achieve the HDR effect, and since the D3200 is > an "iso-less" camera, boosting the exposure in post-processing has the > same effect on noise as increasing the ISO in-camera. That is to say, > the single NEF file you have contains all the same information you > need to create your own "D-Lighting," you would just need to boost > shadows (or some other exposure effect) in Darktable. > > You could also do a "true" HDR by changing the exposure (shutter > speed/aperture) which would mean you actually collect more light in > one of the exposures, which will reduce the noise in the shadows. But > now you have to avoid moving between those two shots. > > Hope that helps! > > -Owen > > On Mon, Jul 25, 2016 at 1:56 PM, I. Ivanov <[email protected]> wrote: > > Usually the cameras would do HDR if shooting to JPG. I use > exposure bracketing mode with 3 shots then process in DT and > export as 16 bit TIFF (and combine it in Luminance). You would > want to use tripod for such shots. > > If the picture is already taken (combined and you only have 1 > file) - I don't think you can do much with it because the > information is lost (or preserved but not in the way you want to). > > Since bracketing may be missing in D3200 (brief google on it) > seems the solution is manual bracketing. It is a bit more work but > can be done. Again - consider a tripod. > > Regards, > > > B > > > > > On 16-07-25 11:32 AM, Michael wrote: > > > > > > > > > My stupid camera (Nikon D3200) has a feature called D-Lighting > which does HDR in one shot (meaning I can't play with it in > LuminanceHDR). I think what fakehdr does is what my camera > does (does an exposure +/-1 ? Ev and then combines it). Is > there a way to get these different exposure shots so we can > use luminancehdr? Or else can we use darktable to do something > like what luminance hdr does? Or does anyone know of a program > with which I can feed it a picture and it will spit out two > additional photos at +/- an Ev you want? > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > = -- Matthieu Moy http://www-verimag.imag.fr/~moy/ ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
