5 Messages
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710 Points
Fri, Jan 27, 2012 4:42 AM
71
Lightroom/Camera Raw: Ability to invert negative scans to positives (color and black-and-white)
I would dearly like to see the Lightroom 4 Beta team implement an additional feature in the final release. That feature would be the ability to take a camera+macro lens image of a B&W negative -- essentially a camera-based scan of a negative -- and invert the negative image to a positive image at the beginning of the development process in such a way that the resulting sliders in the LR4 Develop Module would not operate in reverse. As I understand it, this capability exists in Photoshop, but I don't own Photoshop. I do own Photoshop Elements 9, but that program only supports an 8-bit workflow, not 16-bits per channel, and round-tripping between LR & PSE9 requires the reimportation of a TIFF file that is more than twice the size of my NEF RAW files. Since this programming wizardry already exists in Photoshop, I would think that it would be a relatively simple matter to transfer and adapt that code for LR4 -- but then, I'm not a programmer, so what do I know...
I've been digitizing 40-year-old Kodachrome slides from my Peace Corps days in Africa, using a 55mm Micro-Nikkor (macro) lens, coupled to a Nikon ES-1 Slide Copy Attachment, and even on a D300s body, I can get truly excellent results. I can't wait to continue that work using the pending 36 megapixel Nikon D800 body with an upgraded f/2.8 macro lens (mine is the old 55mm f/3.5 design). I really, REALLY want to be able to camera-scan my many B&W negatives without having to generate huge intermediate TIFF files.
You can respond to this request by emailing me, Jeff Kennedy Thanks, in advance, for taking the time to review and consider my request. I LOVE Lightroom 3, and from what I've seen, I'm going to love LR4 even more. I REALLY appreciate the effort that Adobe takes to solicit input from the photographic user community.
BTW, if the feature I request *can't* be implemented right away, could the LR support team provide detailed, interim instructions as to how to use the "backwards" sliders, and in what sequence? That would be very much appreciated. I'm sure many older LR users have considerable analog image collections that they would like to digitize, and doing so in-camera is both 1) of surprisingly high quality, 2) MUCH faster than using flatbed scanners and 3) of much higher quality and resolution than flatbed scan and MUCH cheaper than professional drum scans.
I've been digitizing 40-year-old Kodachrome slides from my Peace Corps days in Africa, using a 55mm Micro-Nikkor (macro) lens, coupled to a Nikon ES-1 Slide Copy Attachment, and even on a D300s body, I can get truly excellent results. I can't wait to continue that work using the pending 36 megapixel Nikon D800 body with an upgraded f/2.8 macro lens (mine is the old 55mm f/3.5 design). I really, REALLY want to be able to camera-scan my many B&W negatives without having to generate huge intermediate TIFF files.
You can respond to this request by emailing me, Jeff Kennedy Thanks, in advance, for taking the time to review and consider my request. I LOVE Lightroom 3, and from what I've seen, I'm going to love LR4 even more. I REALLY appreciate the effort that Adobe takes to solicit input from the photographic user community.
BTW, if the feature I request *can't* be implemented right away, could the LR support team provide detailed, interim instructions as to how to use the "backwards" sliders, and in what sequence? That would be very much appreciated. I'm sure many older LR users have considerable analog image collections that they would like to digitize, and doing so in-camera is both 1) of surprisingly high quality, 2) MUCH faster than using flatbed scanners and 3) of much higher quality and resolution than flatbed scan and MUCH cheaper than professional drum scans.
Ideas
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Updated
2 months ago
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Tags
lightroom 4 beta
bw negative scan
raw file tone curve inversion
interim instruction request
feature request
negative to positive inversion
Responses
todd_shaner_6660895
Champion
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2.3K Messages
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38K Points
2 years ago
1) Lack of a true Invert function that inverts the raw data BEFORE any of the controls are applied.
You can use and inverted LR Tone Curve and get used to using the controls backwards.
A better option suggested by John R. Ellis is to use Edit in PS and then invert it in PS and save back as a TIFF. When doing this it works much better if you first adjust the LR WB using a custom camera profile as outlined below. You can temporarily invert the Tone Curve (create a preset to save it) and then follow the below instructions to set the WB. When the WB is properly set make sure to return the Tone Curve to its normal 'Linear setting before using Edit in PS.
2) Insufficient WB Temperature control range, which is currently limited to 2000.
The orange mask in many color negative film emulsions is lower than this setting. Further, the Adobe camera profiles are dual-illuminant (6,500K + 2850K). Whenthe Lightroom WB Temp setting is below ~4,000 the 2,850 (Tungsten) table isused for color correction, which does not work well with most color negatives.
Fortunately The Adobe DNG Profile Editor (DPE) can be used to extend the camera profile's Temp and Tint ranges for use with color negative film camera raw files (i.e. captured using a camera). I suggest creating four versions of the Adobe Standard camera profile with Temp and Tint settings -25 +25, -50 +50, -75 +75,and -100 +100. You'll need to export one of the camera raw files to DNG file format with it set to Adobe Standard profile. Open the DNG in DPE and in the Color Matrices tab change the Temp and Tint settings and then go to File>Export and rename the profile so you can identify it by filename. Example: 5D MKII Adobe Standard WB -25 +25. Then process the remaining three settings the same way. Save them to them below folder location and when done restart LR to load the new profiles. You'll need to do this for each camera model you use to capture the color negative film images.
Windows—C: \ Users \ [your username] \ AppData \ Roaming \ Adobe \ CameraRaw \ CameraProfiles \
Mac—Macintosh HD / Users / [your username] / Library / Application Support / Adobe / CameraRaw / CameraProfiles /
Use the Custom WB Camera Profile that requires a WBTemp setting no lower than 5,000 to correct the WB. You may also want to create and try custom WB camera profiles using one of the lower contrastprofiles such as Adobe neutral and the higher contrast and color saturation Adobe Color. They all are based on the same Adobe Standard profile, but with different contrast and color saturation, which may be helpful.
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romualdas_budriunas
13 Messages
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324 Points
2 years ago
One more drawback of current behaviour when using inverted camera profile or tone curve is that face recognition and tagging doesn't work on negative images.
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anthony_blackett
353 Messages
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6.3K Points
2 years ago
A search of this forum reveals only two requests for 'skin smoothing', which is as close as I can get to the Texture adjustment. One of these was 8 years ago with 2 Me Too's and 3 Followers, the other was 5 years ago with 1 Me Too and 2 Followers, yet we get a Texture adjustment.
So the Me Too's and Followers don't seem to count for anything. This Negative function request has 48 Me Too's and 43 Followers, and I imagine that there would be a lot more users out there who would appreciate this functionality, but haven't participated in the discussion. I also would imagine a Negative function to be far easier to implement than the Texture adjustment.
So how about it Adobe and the Lr development team? How long do we have to wait?
I have DSLR 'scanned' around a hundred 100-year-old glass plates for our local historical society using a 'Negative' profile that I created, but with all the tone controls reversed and some not working properly at all, a proper Negative function would make life so much simpler. A colour cast removal tool would also be essential for DSLR 'scanned' colour film.
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todd_shaner_6660895
Champion
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2.3K Messages
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38K Points
2 years ago
Towards correcting this I have just sent an email directly to Adobe staff providing specific details why an LR/ACR raw data invert function is needed and the benefits. Hopefully it will make it up the Adobe totem pole and we will at least get a reply here. Stay tuned!
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gilbert_saint_vincent
2 Messages
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82 Points
a year ago
Options de développement de négatifs
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anthony_blackett
353 Messages
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6.3K Points
a year ago
1
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steve_lehman
918 Messages
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11.3K Points
a year ago
1
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romualdas_budriunas
13 Messages
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324 Points
a year ago
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eric_bowles
9 Messages
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156 Points
9 months ago
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steve_lehman
918 Messages
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11.3K Points
9 months ago
I gave you this solution, above: Get Photoshop Elements (PSE) which works with Light Room.
In Elements, go to Filters > Adjustments > invert. That will invert your negatives to positives. And, yes, Adobe is reading and learning from you.
Steve Lehman, mcse
21
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justincoephotography
2 Messages
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70 Points
2 months ago
Hi i have started shooting film again and gone down the route of using my digital camera to scan my prints, To my surprise Lightroom has no Preset or RGB reverse features which are user friendly.
I think many people are going down the route of scanning there own photos with the digital cameras which gives good results, and many people would benefit by adobe making it easier.
I hope to look forward to adobe creating features suitable soon thanks justin
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carlos_cardona
120 Messages
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1.2K Points
2 months ago
I'm shocked that no one in this thread has posted the BEST SOLUTION: https://www.negativelabpro.com
It's a plugin to Lightroom that gives you the best way to invert your color negatives (you can't just slide the Tone Curve to the opposite corners, color doesn't work that way!) You can try a trial version, and yes, it's $99, but worth every penny!
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anthony_blackett
353 Messages
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6.3K Points
2 months ago
I still fail to understand why the Adobe LrC development team are so reluctant to add this feature after all this time - 9 years Almost as old as Lightroom itself.
The open-source raw software Darktable 3.2.1 now has a module that handles colour negatives, so why is it so difficult for the clever Adobe software engineers?
Here are some screen shots of Darktable and a DSLR 'scanned' film colour negative processed with one click!
Not a bad start.
Functionality like this would be so good to have built into the core of LrC. Living in hope.
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steve_lehman
918 Messages
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11.3K Points
2 months ago
Anthony,
Photoshop Elements (Editor) has Filter>Invert to change slides from a negative to a positive and even back again, no matter if its in color or gray~scale. The Editor has always been the mainstay and Light Room sometimes came along with Photoshop Elements as an add-on. You guys are wishing upon a star for something that has already been made long ago. Adobe will not include this inverter in Light Room, it's appropriate for Light Room which is a basic developer and catalog program.
Light Room only has light's and dark's but no editing. You guys are asking about an inverter which is already a filer>Inverter in Elements in the Editor.
Buy Photoshop Elements and get more bang for your buck and you will have the Inverter for slides and everything else as well. I will not participate further, and will not further comment, this string is far below my aptitude.
Steve Lehman, mcse and photography editor.
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carlos_cardona
120 Messages
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1.2K Points
2 months ago
I can think of 2 very GOOD reasons why Adobe doesn't want to add negative conversion. 1-costs developer time that's best used to make the damn program work right (V10, I'm looking at you!) 2- it makes an already huge resource hog (as it's a huge program) even bigger, taking up more and more RAM memory to run effectively (and the bigger they are, the harder they fall).
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