all about scanning · slide 26 z there are many good scanners; the technology is pretty well...

All About Scanning

Scanning Resolutions

• Gold Standard for color photo prints is 300 pixels perinch. Nothing above that matters.

• Excellent prints can have 200 pixels per inch.

• Prints with 150 or less pixels per inch are somewhatpoorer quality.

• When scanning black and white documents, normally200 pixels per inch is fine.

• Remember that DPI and PPI are the same thing for allpractical purposes.

Anatomy of a Flatbed Scanner

Scanningsurface forpictures,documents,etc.

Backlight inlid must beon to scanslides and/ornegatives.


4" x 6” 5” x 7” 8” x 10”

Resolution in dpi 300 248 164



Scanned Print Size

Finished Print Size

Finished Print Size

35mm 4” x 6” 5” x 7” 8” x 10”

Resolution in dpi 300 61 51 34



Note: A 35mm slide is approximately 1 square inch.

Scanned Slide

Finished Print Size

Finished Print Size

Finished Print Size


Scanning from Editor

Scanner Settings

Scanning Pictures

Separating Pictures

Changing Orientation

Enhancing Scanned Photo

Scanning Documents

• Scan Newspaper Articles, Book Pages, Letters,etc.

• Adjust the resolution to about 200 DPI and setto 8 bit grayscale.

Scanning Documents

Example Documents to Scanand Save on Computer

• Scan the front and back of your Credit Cards thatyou carry

• Scan your Passport

• Scan all Rebate Submissions

• Scan Newspaper articles or any other informationyou want to save for later review

• Scan old letters that have some sentimentalsignificance

• Scan financial and legal documents

• Use the scanner to make paper copies ofdocuments

What About Optical Character Recognition?

Optical Character Recognition

Software Reads Print

Save Text to File

Sources of OCR Software

Most scanners come with some form of OCR Software My Epson scanner included a program called “aabbyy”

for Optical Character Recognition Go to Download.com and search for OCR Software

Readability of Old Text

There are many good scanners; thetechnology is pretty well established. Go to Newegg.com for excellent pricing and

selection. Major brands are Epson, Canon and HP. Higher priced scanners have more features

and scan faster. All in one scanners are OK, but be certain you

have the flexibility set scanning resolution.Some only have an “automatic mode.”

Scanner Sources and Features

If you plan on scanning slides or negatives find out howmany the scanner can scan at once. If you plan on scanning large format negatives, be sure

the scanner has a large backlight (mine only has abacklight for 35mm slides and negatives). Digital Ice is software to remove dust and scratches

from slides and negatives. It is only available on themore expensive scanners -- $200 and up.

Scanner Sources and Features(continued)?

Scanner Sources & Prices

Scanners

If you don't have one – go buy one!

If you have one – use it! It's a great instrumentand has a number of valuable uses.