Re: [darktable-user] OT: Merging multiple images

2017-03-02 Thread Romano Giannetti
On 01/03/17 19:14, Urs Schütz wrote: You could try to convert to tiff and use enfuse from the enblend package. Urs Another thing you can try is to convert to TIFF i high bit depth and use the experimental version of GIMP (2.9.5+). You can find handy AppImages (no need to install anything)

Re: [darktable-user] OT: Merging multiple images

2017-03-01 Thread Urs Schütz
On 03/01/17 14:44, I. Ivanov wrote: I stumble on this not too long ago https://patdavid.net/2013/09/faking-nd-filter-for-long-exposure.html Perhaps if convert has different options as others pointed it may do the work. And it works with 16 bit TIFF out of DT. Regards, B On 2017-03-01 07:49

Re: [darktable-user] OT: Merging multiple images

2017-03-01 Thread Remco Viëtor
On mercredi 1 mars 2017 15:56:57 CET darkta...@911networks.com wrote: (...) > > I would prefer first merge, then use DT. I can easyly convert the raw > image to 16-bit TIFFs without any processing. > (...) Well, no, you can't: if you generate a TIFF from your raw, you'll have at least set the

Re: [darktable-user] OT: Merging multiple images

2017-03-01 Thread junkyardsparkle
On Wed, Mar 1, 2017, at 00:31, johannes hanika wrote: > that's averaging. for star trails/light painting maybe you'd want the > brightest pixel (and for removal of stuff median etc). Yes, a few times I've abused this averaging in cases where it wasn't really the optimal approach, but just

Re: [darktable-user] OT: Merging multiple images

2017-03-01 Thread darktable
On Wed, 1 Mar 2017 13:20:40 +0100 Stéphane Gourichon wrote: >Le 01/03/2017 à 06:57, darkta...@911networks.com a écrit : > >First, it might not be that off-topic. Are your images raw? Yes they are raw. > >You can consider the merge step being done before or

Re: [darktable-user] OT: Merging multiple images

2017-03-01 Thread johannes hanika
hi, On Wed, Mar 1, 2017 at 8:06 PM, wrote: > Did you try the "create HDR" function in darktable? It sometimes works well > for this kind of thing, depending on exactly how much light fell where in > each shot and the overlap... that's averaging. for star

Re: [darktable-user] OT: Merging multiple images

2017-02-28 Thread Remco Viëtor
On mercredi 1 mars 2017 07:57:32 CET Remco Viëtor wrote: > On mercredi 1 mars 2017 06:57:46 CET darkta...@911networks.com wrote: > > DT 2.2.3 on arch. > > > > I took photos of a car at night and did some light painting with an > > LED in 25 seconds blocks. > > > > I have 9 images with each image

Re: [darktable-user] OT: Merging multiple images

2017-02-28 Thread junkyardsparkle
Did you try the "create HDR" function in darktable? It sometimes works well for this kind of thing, depending on exactly how much light fell where in each shot and the overlap... On Tue, Feb 28, 2017, at 21:57, darkta...@911networks.com wrote: > DT 2.2.3 on arch. > > I took photos of a car

Re: [darktable-user] OT: Merging multiple images

2017-02-28 Thread Remco Viëtor
On mercredi 1 mars 2017 06:57:46 CET darkta...@911networks.com wrote: > DT 2.2.3 on arch. > > I took photos of a car at night and did some light painting with an > LED in 25 seconds blocks. > > I have 9 images with each image a different area of the car lit by > the LED. How can I merge them and

[darktable-user] OT: Merging multiple images

2017-02-28 Thread darktable
DT 2.2.3 on arch. I took photos of a car at night and did some light painting with an LED in 25 seconds blocks. I have 9 images with each image a different area of the car lit by the LED. How can I merge them and selecting the lit section? They are all lined up (tripod). Is there some software