A miller Posted March 12, 2013 Share #1 Posted March 12, 2013 Advertisement (gone after registration) I am scanning a bunch of MF color negatives on my coolscan 9000 using Vuescan. I set the cropping at "auto." Then a preview. The framelines are invariably off, usually outside of the picture. when I reframe the line to be precisely inside the picture, the colors and brightness tend to change! then I try to tweak the color and brightness channels to restore the image. but I dont always succeed. Why to the colors and brightness change when I re-frame the image and what can I do to prevent this? thanks in advance. Adam Link to post Share on other sites More sharing options...
Advertisement Posted March 12, 2013 Posted March 12, 2013 Hi A miller, Take a look here Vuescan workflow question - cropping. I'm sure you'll find what you were looking for!
lanetomlane Posted March 15, 2013 Share #2 Posted March 15, 2013 I've been using Vuescan (with a Minolta Dimage Pro Scan) recently to copy slides. At first I used the Preview to crop and like you found it changed the colour slightly. What I do now is not to bother with Preview but go striaght to Scan and then do my cropping etc., in Lightroom. I find it's far quicker than messing with Preview. Hope this helps. _______________ Regards, Tom Photography by Tom Lane Link to post Share on other sites More sharing options...
Ronazle Posted March 15, 2013 Share #3 Posted March 15, 2013 I would imagine cropping removes a massive quantity, effect wise, of white from the photo. This would result in a different "exposure" and perhaps be consequential to color for (in my case) an unknown reason. Easy answer, does the same for me, set your options after cropping. regards, ron:) Link to post Share on other sites More sharing options...
stunsworth Posted March 15, 2013 Share #4 Posted March 15, 2013 I would imagine cropping removes a massive quantity, effect wise, of white from the photo. This would result in a different "exposure" and perhaps be consequential to color for (in my case) an unknown reason. Easy answer, does the same for me, set your options after cropping. regards, ron:) This is correct. There's an option to ignore a percentage of the frame when the program is calculating the exposure. I have that set to around 10% so that any black frame that may be included in the scan doesn't influence the exposure. Link to post Share on other sites More sharing options...
A miller Posted March 15, 2013 Author Share #5 Posted March 15, 2013 Thanks for all of the replies. This is like another language for me. I will go and try what has been suggested. Thanks again, Adam Link to post Share on other sites More sharing options...
philipus Posted March 16, 2013 Share #6 Posted March 16, 2013 Do you lock exposure and (as applicable) film base colour before scanning (see here in the Vuescan manual)? I'm not sure but perhaps that would help. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.