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Author Topic: Upload your random pictures (part 3) Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 12-11-2009 11:54 PM                       quote: Randy Stankey I still have to figure out if I can physically clean the slide then use digital techniques to remove the rest of the flaws. Randy, get a scanner that has "Digital ICE" technology. It will get rid of ALL of that stuff, like it was never there. In addition to the RGB acquisition, ICE scanners do an IR scan to determine what parts are physical anomalies on the surface of the film - which it then simply ignores. It's really cool. I only wish I'd had something like it years ago, when I was remastering the drive-in trailers. Btw, we wanna see her again after you're done with her. She's gorgeous.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 12-12-2009 01:20 AM                     My Canon scanner has a similar feature. It's called FARE. It uses an IR pass to locate the dust and scratches very much the same way ICE does. It works pretty well but it won't get all the defects. The image above has already been cleaned up a lot. Here's what it looked like before I worked on it. I've still got work to do but, as I said, it's easier to learn when you have fun images to practice with!  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 12-12-2009 01:43 AM                     If I'm working with some particularly challenging images I'll occasionally work in 16-bit per channel L*a*b mode. L*a*b can be really useful if you're using a lot of "auto" features from a scanner like ICE or doing other de-noise or de-speckle types of things. Those types of filters will often soften an image. I think that sort of thing should be used as a last resort, but you have no choice with certain images. In L*a*b color mode the color luminance values are separated from the lightness values. You can do work to improve contrast levels and sharpness in the lightness channel without messing up the color. L*a*b is pretty tricky though. You just have to experiment.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 12-12-2009 09:51 AM                     I tried L-A-B. I see how it works but it will take some time to get my head wrapped around it. I'm so used to working in R-G-B or C-M-Y. I don't see how I can get the Canon driver to scan into L-A-B. I suppose I will have to scan into the regular mode(s) then convert to it. I guess this would be a good reason to buy Silverfast. No?  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 12-12-2009 01:07 PM                     I'm not sure if any affordable flat bed scanners can scan directly into L*a*b color more. Some high end scanners (drum type usually) can scan direct into CMYK and L*a*b. The best thing to do is scan the original in 16-bit per channel mode and do as much of the levels and curves adjusting in the pre-scan dialog boxes. Once you scan the image you can convert it to L*a*b. One more note about L*a*b: it can be pretty handy to use in prepping a RGB-based image for CMYK print output. You can tone down color saturation levels into CMYK safe gamma without ruining the contrast in the image. You have to buy Silverfast separately? My Epson scanner had that scanning software bundled.  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 12-12-2009 01:17 PM                       quote: Bobby Henderson In L*a*b color mode the color luminance values are separated from the lightness values. Humm, that sounds like something that might be up my alley. Can you do anything with something like this in that mode?  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 12-12-2009 03:45 PM                     Far from perfect, but it's a start. I did this simply by doing some quick brightness/contrast tweaks to the individual "a" and "b" channels and then increasing the contrast in the lightness channel.  |  IP: Logged Scott Norwood Film God Posts: 8146 From: Boston, MA. USA (1774.21 miles northeast of Dallas) Registered: Jun 99 posted 12-12-2009 04:00 PM                        Tim--who's the girl with the Moviola?  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 12-12-2009 04:30 PM                       Bobby... humm, did you do that in Photoshop? It's also a 24-bit jpeg at the moment. The original scan is Cineon format. Here's some work I'd done on it a couple years ago. I used some heavy filtering to minimize the scratches and dirt that got blown out when trying to correct for that much color loss. Scott... I wish I knew. It's a photo I snagged from an eBay auction long ago.  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 12-12-2009 05:34 PM                     Yeah, I did the quick tweaks in Photoshop. With more careful work it might be possible to get the color closer to a more normal look. However, that's a pretty extreme image -almost a monochrome magenta/black duotone image. It's pretty amazing what image manipulation tools can do these days. The color work done on The Godfather restoration was pretty amazing when you see the before/after comparisons. OTOH, the overly dark images had color data in all the channels. If you're missing the yellow layer (or any other layer) entirely then you're pretty well screwed when it comes to restoring a full color spectrum to the image.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 12-13-2009 10:55 PM                     Those racists!  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 12-13-2009 11:55 PM                         |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 12-13-2009 11:58 PM                     Mammy!  |  IP: Logged Mike Blakesley Film God Posts: 12767 From: Forsyth, Montana Registered: Jun 99 posted 12-14-2009 12:01 AM                        Downtown Forsyth, Montana with snow storm in progress.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 12-14-2009 12:02 AM                     Apparently, women had to wear nipple protectors when they played the conga drums, too. Things sure were weird back in 1958!  |  IP: Logged

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