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Author	Replies: 6 / Views: 2,151
QuickSilver Pillar of the Community United Kingdom 1077 Posts	Posted 02/07/2009 10:01 am Not technically a photography question, sorry, but does anyone have a scanner set up they are particularly happy with. I am currently using 150dpi and blowing up to 667% to give me a 2000x2000 pixel jpg for a 2x2. Why does the detail not seem to get better as you increase the dpi? Any suggestions? Report this Post to the Staff

QuickSilver Pillar of the Community United Kingdom 1077 Posts	Posted 02/07/2009 10:12 am Also I would like to know what the difference is between a scan with the settings of 150dpi at 667% resolution ie 2000x2000 and one at settings of 600dpi and resolution of 167% also giving a jpeg of 2000x2000? I can't see any difference, and the file size is similar. Edited by QuickSilver 02/07/2009 10:13 am Report this Post to the Staff
bargar Valued Member Canada 80 Posts	Posted 03/05/2009 2:21 pm I use 600dpi and I see a difference when I have to resize the picture compared to using only 150dpi Report this Post to the Staff
Rusiancoin New Member Russian Federation 28 Posts	Posted 04/21/2009 3:28 pm Hi, I use 400 dpi and resalt is very good you can see it # 150 dpi it's like this # smaller and not soo good quality Report this Post to the Staff
QuickSilver Pillar of the Community United Kingdom 1077 Posts	Posted 04/21/2009 8:24 pm You are changing the dpi but not the resolution. As previously posted, if I change the dpi AND the zoom %ge conversely, I can see no difference in quality or pixelation however much I zoom in. Report this Post to the Staff
hhbkiddo Pillar of the Community Canada 1248 Posts	Posted 04/22/2009 12:00 am hello, I always use at least 1200 dpi to scan the coin, then crop / zoom in to the coin , but leave a considerable frame on it. it will be a largwe file, but that I can fix with the photo software, like ACDC or any reasonably good SW. this way your coins are always sharp to the details... AND can easily be enlarged or reduced... when I want details, like details of one number in a date, I use 2400 or 3600 dpi, but do only a small portion of the coin with the zoom function. try it.... you like it... HHB Report this Post to the Staff
Road_Apples New Member Canada 19 Posts	Posted 05/03/2009 11:54 pm Keeping in mind the DPI is the amount of data captured, take as large a scan file in the beginning and then crop, reduce it afterwards. I personally take them big and store them for future reference. The smaller picture stored on Auctiva for example allows the tire-kickers access, but if I get a serious buyer needing something more in detail, I'll direct them to my personal FTP server where they can download an ultra high resolution picture of the coin. It is usually several hundred MB, but what's that when you are interested in buying a valuable coin. Report this Post to the Staff
	Replies: 6 / Views: 2,151

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