Mastering Darktable: How To Export Stunning Images Like A Pro!

Exporting to External Editors with LUA plugin: • Darktable LUA Script f...
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Mastering Darktable: How To Export Stunning Images Like A Pro!
In this Mastering DarkTable video, we look at all the options available to us that help get our images OUT of Darktable using the darktable export dialogue box.
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[@rosleinrot5322]

Thank you for the explaining of the export procedure in dt. For me it is very useful to hear about the differences in the parameters.

[@AndyAstbury]

My pleasure, glad it helped!

[@bernym4047]

Re: 'set size' option. I often create panoramas from several tiff images which can make a huge file. I resize the tiffs by entering a decimal fraction here, e.g. 0.75, 0.5, 0.25 etc. This also maintains the aspect ratio. You can also upsize which surprisingly does not seem to degrade the image. Thanks for a very comprehensive treatise of an extremely complex aspect (in terms of options) of dt.

[@StephenJWalter]

Thanks for a great video, as ever. A word to the wise as to resizing if you’re publishing to Facebook. Not that I’ve done it yet, but word on the street is that you need to upload a file where neither of its dimensions is greater than 2048. If you exceed this then Facebook will apply its own resizing algorithm and the technical term for the result is “crap“. So set the first dimension to 2048, leave the second at the default and you’ll get a result with the same aspect ratio. I imagine you would want the sRGB profile as well, but I’ve yet to test this.

[@alanwilson1982]

Thanks Andy for clarifying all these options. I submit images to picture libraries. They require 8bit jpegs and always in the Adobe RGB 1998 colour space [obviously all images going to print]. dt refers to Adobe RGB (Compatible). Is this the same thing? Thanks again for all your informative videos, Best regards Alan.

[@AndyAstbury]

Hi Alan, I sub to stock sites, always jpeg, and always in the sRGB colour space, which is the correct colour space for jpegs. AdobeRGB1998 has a gamma curve of 2.2, which is better for for 16bit files but is too contrasty in the shadows and highlight for 8bit images with only 256 levels per channel. The sRGB native gamma is a hybrid gamma curve that only AVERAGES 2.2. This way, your jpegs look better, basically.

[@alanwilson1982]

@@AndyAstbury Thanks for your time to reply Andy. I supply to only two agencies, one in Germany and the other here in SA. Both their submit guidelines stipulate 8bit and Adobe RGB and in photoshop, as u know it's listed as that. I'm trying to use darktable but it's listed as "compatible" and I wondered why. Anyway thanks again Andy 👍 best Alan.

[@Eigil_Skovgaard]

'File type not allowed' is the short message from Lighttable when we try to open a DNG file via External editor (a LUA feature you refer to and have covered earlier). The wise guys on pixls us in effect say this: 'DNG is not a recognized raw format'. And that's strange for a couple of reasons. Firstly, this standardized raw format should be the basic 'digital negative' ranging before hundreds of brand specific raw formats. Secondly, DNG is easily opened and edited in Darkroom (largely) without any differences from editing the native camera raw format (ARW in this case), and without visible quality differences in the output. And finally, it's possible to export a DNG from Lighttable to the JPG format as well as the TIFF format without problems. So why can't a DNG file be opened in an external raw editor? I know you are familiar with the impressive noise management in DxO PureRAW (now 4) which spits out a DNG file, and it is easily opened and edited in Darktable. I can even open and edit these files in my ancient Photoshop CS5 (ACR 6.0) without problems, but I have to open Photoshop first and import the DNG (not possible via External editor).

[@emrg777]

Test comment.... I have left the same comment twice now and when I come back no sign of it... comment was regarding rendering intent in DT....default srgb profile does not support it... just a heads up... let see if this comment sticks... if not I am very curious why.....

[@AndyAstbury]

Hi Todd, not had any previous comment from you turn up recently - I've set you as 'approved' now, so your future comments should show immediately

[@emrg777]

All good Andy...just left that comment on rendering as many people assume it works... and it does just not with the default sRGB profile included with DT.... no worries ... I enjoy your videos...