![]() One well known problem is that scanners use RGB filters much like a camera and the combination of their illumination type (CFL or LED) and RGB filters do not meet Luther/Ives criteria. I find the Global CC too difficult to work with.įlat bed print scanners are simply not colorimetrically accurate. Quote from: saiguy on March 27, 2019, 09:17:51 am My workflow in SF8. ![]() I rarely use the Black Pipet and you can change the preference to get a higher number. Then set a color sampler and increase the numbers to mid 20's using Histogram Master Tab. I only use it on photos where I can't find anything black and then guess at a black spot. The White Pipet will use the same setting. I save the exposure increase for LR as it does it intelligently. This will make ACC set a white point at about 242 to 245. I also change the Highlight Offset to 6, and the Shadow Offset to 92. In Preferences Auto Tab uncheck the box Active for the Pipet tool. You can run it many times at different strengths on separate layers and use masks. LSI has a SRDx Photoshop Plug-in that is more useful. You can use the SRDx tool if you are careful. I then use Selective Color Correction tool to deal with remaining color issues. Some times I set a color sampler before clicking with the Neutral Pipet. But you need to set in Preferences for the tool to be used for that, otherwise the place you click will go R128, G128, B128. If you see a color cast, the Neutral Pipet tool can remove it if you find the right place to click. If not, undock the Histogram again and you can fine tune the numbers on the sampler. If the RGB numbers are very close you have a neutral black point. Try to find what should be the darkest black place in the photo. By shift clicking you can set and remove colors samplers, up to 4. Then for each RGB channel set a good black point by moving the left slider just a little inside where the data starts. Undock the tool and you can drag the bottom corner to stretch it across the screen. Open the Histogram tool and use the Separate tab. For sun set shots the Landscape choice seems to work best. If that happens I will increase the brightness with the top slider in Picture Settings. This will set a very good white point unless it keys on some specular highlight. I find the Global CC too difficult to work with. ![]() Quote from: eriksatie on March 25, 2019, 06:40:37 pm Hi everyone, this is my first post here, I write from Italy I'm attaching the IT8 scanned with the custom profile applied. Maybe I was expecting to much from calibration, but I hoped to be able to have a nearly correct scan with no needs of major color correction after calibration. So what's the problem? is the calibration "paper dependent"? Do different papers interacts differently with the scanner light? or the problem is just how I see the scans with my monitor? maybe I should calibrate the monitor to D50 for a closer match? This is non coherent with the scan of the target that shows a slight yellow tint.īut I have some prints made with Glossy Fujicolor Crystal Archive (same paper as the IT8 target) that match quite closely the scan. Moreover, print scans have a blu/green cast that I'm able to correct with Silverfast Global CC, using the Cyan/red axis. I've also checked the scans with the monitor of my MacBook Pro (also calibrated) that match quite closely the LG. The monitor is a medium range LG for office/generic use, the delta E is 0,42 so it shouldn't be so bad. My monitor is calibrated to D65 with i1display pro. grey patch n.10 measure L: 42, A: 00, B: 03 (apart from color shift, shouldn't it be near L: 50?) Silverfast says that the delta E is 0,80 for the reflective profile, that should be good enough, but the grey patches are not very neutral. ![]() I've done the calibration but I'm unsure of the results. Now I'm moving to prints and slides, and for these I've bought the IT8 targets from LaserSoft Imaging to do automatic calibration with Silverfast. I've managed to correct the frequent color casts and I'm happy with the results. I've scanned about 1500 35mm color negatives so far with Silverfast, also thanks to Mark D Segal book. It's about one year that I've bought an Epson V800 to scan my personal and family photo archive. Hi everyone, this is my first post here, I write from Italy
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