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Author	Replies: 5 / Views: 3,841
Jim1953 Pillar of the Community United States 2600 Posts	Posted 09/23/2007 7:26 pm Am learning to use my new Epson 4490 scanner. These are the results with little adjusting of the pics. Copper: Image: img025-1.jpg 83.24 KB Image: img026-1.jpg 92.99 KB Silver: Image: img021-1.jpg 90.08 KB Image: img022-1.jpg 86.57 KB Gold: Image: img023-2.jpg 94.47 KB Image: img024-1.jpg 95.14 KB Any thoughts on how to do a better job would be greatly appreciated. Also, it does appear that it will do what I wanted it to do which is allow me to get a quick pic to post. When I want to really show a high quality coin I will setup the camera. Thx, Jim Report this Post to the Staff

zacharycash Pillar of the Community United States 668 Posts	Posted 09/23/2007 7:41 pm thats really good Report this Post to the Staff
amac44 Member United States 3242 Posts	Posted 09/24/2007 10:25 am not bad! Report this Post to the Staff
ageka Pillar of the Community Belgium 2078 Posts	Posted 09/24/2007 2:47 pm Ok your scanner has a problem with its colourbalance My nearly ten year old photoscanner does an internal calibration of RGB whenever it feels like it I really do not know what triggers the autocalibration So you may want to look at the booklet and find out if you got a calibration or RGB adjusment or colorspace adjusment etc Failing this try putting gamma to 1.18 and use a blue background for copper and gold and maybe a darkgray one for silver When I bought the scanner the photospecialist who used it for a few years put the gamma to 1.18 theoretically it should be between 1.8 and 2.4 depending whether you use a IBM compatible or a MAC Since it works so well I never touched the gamma I only fiddle with light and contrast Report this Post to the Staff
Jim1953 Pillar of the Community United States 2600 Posts	Posted 09/25/2007 09:12 am Thx, ageka. I will get the book out tonight and go to work. After I make the adjustments I will post some more examples. I would not of thought to put a background color on the bed of the scanner, but it sure makes sense. Jim Report this Post to the Staff
ageka Pillar of the Community Belgium 2078 Posts	Posted 09/25/2007 3:37 pm The natural background on my scanner is what they call a black trap It is totally absorbant of any light whatsoever Since I mainly scan yellow to orange gold and since the complementary color is blue to violet I insert a sheet of reddish blue on all my scans Apart from some very high reflection no diferentiation in contrast coins like the Maple leaf that works very well Report this Post to the Staff
	Replies: 5 / Views: 3,841

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