philspectrum Posted March 30, 2009 Report Share Posted March 30, 2009 I have a need to remove the pinky brown film base from scans of c41 film, - shot on a digital camera in daylight conditions. I have played in photoshop to try to extract a naturally appearing positive image, - but just cannot work out how to do it. Any ideas ? Thanks Phil Quote Link to comment Share on other sites More sharing options...
Big Dave Posted March 31, 2009 Report Share Posted March 31, 2009 Hi Phil, never tried it, but can you post an image, and I'll play around with it for you.... sounds like a bit of fun.... Quote Link to comment Share on other sites More sharing options...
Photographis Posted March 31, 2009 Report Share Posted March 31, 2009 Do tell us more Phil, this sounds fascinating. is it a customer trying to do without a scanner, or one of your personal projects? If there is no time pressure send me one and I will have a play and see. Quote Link to comment Share on other sites More sharing options...
philspectrum Posted March 31, 2009 Author Report Share Posted March 31, 2009 Here are a couple of samples. named by film type - jessops and kodak ektar. Client not expecting pro results, - just a desire to get somthing that looks like a photo ! Gotta say - I thought it would be easy, - but cannot work out how .... Must be a solution, - after all, - that's where photos come from, - or they used to .... THANKS Phil Quote Link to comment Share on other sites More sharing options...
NeilT Posted March 31, 2009 Report Share Posted March 31, 2009 Turn it into a bit off art work Quote Link to comment Share on other sites More sharing options...
Nick Posted March 31, 2009 Report Share Posted March 31, 2009 A few minutes got me this far. Is it any good or even close to what you are after?? Quote Link to comment Share on other sites More sharing options...
Dave S Posted March 31, 2009 Report Share Posted March 31, 2009 here is my effort! Quote Link to comment Share on other sites More sharing options...
philspectrum Posted March 31, 2009 Author Report Share Posted March 31, 2009 I Love em all. Personally I'd rather offer the acid special - wot drugs you on Neil ? on a slightly more conservative level, - how did you do it ? - especially the natural(ish) looking ones Dave / Nick ? I keep hearing about people creating 'actions' in photoshop, - personally, - never done it or used one. - Don't suppose it's rocket science, - just never been there yet (don't tell ;-)) Bearing in mind that different film types have different base colours,(supply of Jessops & Kodak scans) - AND - emulsions carry colour info in different ways (remember colour hand printing, - or KIS/Durst ?) Is there any way of automating the colour conversion process that you have made into some very nice/acceptable results from? If I have folders and folders of such images, - is there any way that I can convert the whole batch in a single action without having to open, do stuff, save etc x 36 exposures ? I will share the why and the value of this project to whoever helps me crack it, and a pint to all players. Thanks for your cleverness. P Quote Link to comment Share on other sites More sharing options...
Magenta Posted April 1, 2009 Report Share Posted April 1, 2009 I must be missing something here. How are you scanning these negs? If they are done on a flatbed are you using reelection or transmission. All the scanners supplied with Noritsu kit have a top light source. Select transmission and Negative film and it will get it damn close without using photoshop. Quote Link to comment Share on other sites More sharing options...
philspectrum Posted April 1, 2009 Author Report Share Posted April 1, 2009 Hi Magenta, - you are missing somthing, - these scans are made with a digital camera, - and it needs to be that way. Propper scanner not an option. Had some great tips from Big Dave. Any ideas how to make some automated action or script so that I can just offer a folder of say 36 image scans - and get 36 semi reasonable pictures? Ta P Quote Link to comment Share on other sites More sharing options...
Tony.T Posted April 1, 2009 Report Share Posted April 1, 2009 you can make an automated action in photoshop that will run through a folder of photos and carry out the same task on each. It is possible to combine several steps im 1 action. In this case you would need to invert the image (to turn it to pos from neg) then perhaps carry out a colour alteration and perhaps finally sharpen the image. In fact you can pretty much do anything you want in one action. To see how to do it open photoshop and go into help, it's all explained there. hth Tony Quote Link to comment Share on other sites More sharing options...
kikskiks Posted April 2, 2009 Report Share Posted April 2, 2009 Try this one open the picture in photoshop press "ctrl + I" then "shift + ctrl + L" Quote Link to comment Share on other sites More sharing options...
Nick Posted April 2, 2009 Report Share Posted April 2, 2009 What happens to the files once they are corrected? Are you then going to print them trough a lab? If so this would allow to fine tune colours and density to your preference. As the method I used does reply on user input when removing the cast. So if doing a batch you would have to put an average value in. Quote Link to comment Share on other sites More sharing options...
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