Hi Gert, I haven't done any scanning for a long while but when I was doing that I took the attitude that the best tool for dealing with negatives (or in my case positives) and film types should be the scanning tool itself and it was that tools responsibility to produce a realistic tiff image for subsequent processing. I used VueScan at the time and it was/is probably better for this than anything likely to be achievable in an image editor as it had its own database of film response curves.
That said, If I was going to be processing scans now into dt, I would probably try to first optimise the output in whatever scanning tool I had and save scanning parameters so that behaviour remains consistent, at least for a specific film type. Then go into dt and if the scanner software isn't managing desired colour rendition try creating a custom 'camera profile' for that particular film type. But I haven't actually tried this ... Rgds, Rob. -----Original Message----- From: Gert van der Plas - Schrama [mailto:[email protected]] Sent: 13 February 2014 11:39 To: [email protected] Subject: [Darktable-users] (levels tool) colorbalance module feature request for scanned film negatives Hi, I've been enjoying darktable for digital negatives greatly and each new release rocks even better. Even on my laptop with mediocre OpenCL support. I've been playing with the color balance module as a way to use it as the level tool in gimp for scanned negatives. This works quite well. However it would be great if I could set a blackpoint and white point with crosshair and configure the L,r,g,b values for lift and gain. As the white balance module enacts before the color balance module an additional whitebalance modifier slider would be very useful too. And if gamma then scales between the black and white point this would speed the workflow tremendously. In the longterm adding curves into this module might be even better. This is stuff I can do in 8-bit in gimp pretty easily, but then I loose all that nice 16-bit tiff information. Anyone who would like this too? Doing negatives and stuff? Is there a better way? Best, Gert -- Panta Rhei -- Life is a dance ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users This email is confidential and is intended for the addressee only. If you are not the addressee, please delete the email and do not use it in any way. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the company. NHBC reserves the right to monitor all email communications. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. NHBC, the National House-Building Council, is limited by guarantee in England, No 320784. Registered address: NHBC House, Davy Avenue, Knowlhill, Milton Keynes MK5 8FP. NHBC is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and Prudential Regulation Authority. NHBC Building Control Services Ltd, registered by guarantee in England with Company No. 01952969. Registered address: NHBC House, Davy Avenue, Knowlhill, Milton Keynes MK5 8FP. NHBC Services Ltd registered by guarantee in England, No 03067703. Registered address: NHBC House, Davy Avenue, Knowlhill, Milton Keynes MK5 8FP. If you make a claim under a Buildmark policy your personal details will be stored and processed in accordance with the Data Protection Act. Your personal details may be passed to others involved with your claim such as the original builder, or a consultant or remedial works contractor that we may employ in connection with your claim(s) and matter ancillary to your claim(s). Other than disclosure provided for in this statement, we will not pass any data about you to any other party without your permission unless we are required to do so by law. ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
