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Photo Restoration Repairing damaged photos

Settings for Scanning

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  #1  
Old 09-24-2010, 08:36 AM
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maverick911 maverick911 is offline
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Settings for Scanning

What dpi should I use to scan in old photos? And which file format should I save them in using PS3?

Using an Epson Perfection 1240U.
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Old 09-24-2010, 09:43 AM
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Re: Settings for Scanning

Choose your scan resolution so as to generate 300ppi at the ultimate OUTPUT size. So for example if the largest size that you ever intend to print will be 8 x 12 inches, you would ideally need 2400 x 3600 pixels. If the photo that you are scanning is 4 x 6 inches, then you will need a scan resolution of 600ppi or greater. If your output will be 12 x 18" from a 4x6 photo, you need 3600 x 5400 or 900ppi. Since 900 ppi is not a standard scan res, you would need to go to 1200ppi.
Save the scan output to a file format that uses lossless compression - like TIFF or PSD but preferably not jpeg or if jpeg use the highest quality setting. TIFF is probably preferable because it has a Lossless compression setting and you can set PS to open them automatically in Adobe Camera RAW.
Regards, Murray
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Old 09-24-2010, 09:57 AM
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Re: Settings for Scanning

Thank you very much Murray, most helpful.
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Old 09-24-2010, 10:00 AM
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Dak Paule Dak Paule is offline
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Re: Settings for Scanning

Good info Murray. I have been meaning to ask that same question.

Dak
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Old 09-24-2010, 10:26 AM
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Re: Settings for Scanning

Murray, another question please. Should I scan as a Gray Scale image or Color? Reason I ask is that I am following a tutorial on levels, the tutorial is showing RGB Channels on a B&W image but I only get Gray Scale Channel?
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Old 09-24-2010, 10:34 AM
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Re: Settings for Scanning

Definitely scan in color, even if the photo is in B&W. For example if you have some yellowing discoloration or stains or colored mold spots, they can be filtered out much more easily. Certain reflections or textures in the paper will be recorded differently by the R,G,B channels resulting in contrast that can be more easily isolated when post processing the image.
One other thing that is important when scanning. Turn OFF all of the automatic settings that the scanner s/w want to apply to "help" you. Turn OFF:
- DeScreen
- Auto Levels
- Auto Contrast
- Auto Color
- Auto Brightness
- All Sharpening
- All pretty much anything
The scanner s/w will almost always do more damage to a scan than it will do good. Wrong guesses produce damage & loss which is difficult or impossible to recover from. You would be much better to take a raw unmodified scan and then open & process it in Camera RAW or PS or both.
Regards, Murray

Last edited by mistermonday; 09-24-2010 at 12:46 PM.
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Old 09-24-2010, 10:39 AM
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Re: Settings for Scanning

Thats great info thank you. However, you now have me wondering if my scanner is good enough, it seems the only thing I can overide is the DPI?
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Old 09-24-2010, 11:27 AM
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Florin Florin is offline
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Re: Settings for Scanning

Good info, Murray
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Old 09-24-2010, 11:51 AM
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Re: Settings for Scanning

Maverick, you can control all that stuff on your 1240U. You need to switch from auto to manual mode. Please check your user manual or dowoad one from Epson.
Regards, Murray
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Old 09-24-2010, 12:03 PM
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Re: Settings for Scanning

Thank you once again.
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