Objective:
To help you will understand how to use the camera in your smartphone to obtain high quality images of documents and photographs in environments typically encountered by genealogists.
Downloads
- Handout/Outline (PDF)
- Presentation Slides (PDF)
Overview
- When You Should NOT Use Your Phone
- Why is a scanner so good at digitizing images?
- The Basics of Digital Images
- What is a digital image?
- How a Digital Camera Works
- Digital Image File Formats
- Digital File Formats: TIFF, JPEG, PNG, RAW and PDF
- Metadata
- Good Software: https://www.xnview.com/en/
- Resolution
- Metadata
- Camera Basics – how a digital camera works
- Steps to Follow to create optimal images
- Make Sure You Have Memory Available
- Clean The Lens
- And the screen!
- Choose the Best App
- Camera+ (runs on iOS & Android) gets best reviews
- Avoid using “scanning software” as you cannot be sure what they are doing to “optimize” the image
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- Optimize the App Settings
- Resolution
- File Format
- Compression
- Flash or no Flash
- Adjust white balance
- HDR
- Optimize the App Settings
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- Get Good Light
- Sunlight (move the document near a window or take it outside)
- Bright single light source (lamp)
- Light from multiple directions (minimizes shadows and glare)
- Get Good Light
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- Minimize Surrounding Glare
- Dark, non-reflective background
- Minimize Surrounding Glare
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- Keep the Document Flat
- Coins, Books, Keys, Rulers, Coasters, Hands, etc…
- Keep the Document Flat
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- Fill the Frame
- Utilize as many pixels as possible to capture the image (not the background)
- Orient the phone to maximize resolution
- Do NOT use Digital Zoom
- Fill the Frame
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- Keep the Camera Parallel to the Document
- Avoids distorting the image
- Keep the Camera Parallel to the Document
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- Stabilize the Camera
- Use the App’s anti-shake mode if available
- Mono-Pod or Tri-Pod (Suggested: Qualiassu Cell Phone Tripod)
- Brace the phone against something solid
- Stabilize the Camera
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- Set the Focus/Exposure area
- On most phones: tap the center of the screen
- Set the Focus/Exposure area
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- Large Documents
- Overview Picture – Entire Document
- Overlapping closeups (top left, top middle, top right, bottom left, bottom middle, bottom right)
- Keep the camera at the same height
- Keep it parallel to the document
- Closeups of “important areas” (lets you zoom in with high level of detail)
- How close is “too close”?
- Large Documents
- Does all of This Really Make a Difference? Yes!
- What About Wand Scanners
- What About a Flip Pal?
- Why Not Use Scanning Software?
- Google PhotoScan – https://www.google.com/photos/scan/
- PhotoMyne – https://photomyne.com/
References/Additional Information
- “Can I Use My Phone As A Scanner? Yes, But…” – https://www.picturesandstories.com/news/2018/4/4/how-to-scan-old-photos-with-your-smartphone
- The Best Ways to Scan a Document Using Your Phone or Tablet – https://www.howtogeek.com/209951/the-best-ways-to-scan-a-document-using-your-phone-or-tablet/
- How to scan documents and photos using your iPhone – https://www.macworld.co.uk/how-to/iosapps/how-scan-documents-photos-using-your-iphone-3665021/
- “The Best Camera Apps for Android and iOS” – https://www.makeuseof.com/tag/best-camera-apps-android-ios/
- What is HDR? See “HDR Explained” – https://lifehacker.com/5991508/what-is-hdr-and-when-should-i-use-it-in-my-photos
- “How to Photograph Pictures Under Glass & Other Shiny Things” – https://www.picturesandstories.com/news/2014/5/12/how-to-photograph-pictures-under-glass-other-shiny-things
General Photography
- How to Crush Night Photography: 7 Secrets from a Pro: https://www.shutterbug.com/content/how-crush-night-photography-7-secrets-pro
- A Helpful Explanation of Why Bit Depth Is an Important Camera Specification – https://fstoppers.com/education/helpful-explanation-why-bit-depth-important-camera-specification-272770
- A Beginner’s Guide to What Focal Length of a Lens Really Is – https://fstoppers.com/education/beginners-guide-what-focal-length-lens-really-270770
- Everything You Need to Know About ISO – https://fstoppers.com/education/everything-you-need-know-about-iso-270316
- How Many Megapixels Do You Need? – https://alphauniverse.com/stories/how-many-megapixels-do-you-need-/?cid=ban-na-1787
- How Autofocus Works in Photography – https://petapixel.com/how-autofocus-works-in-photography/
- 6 Reasons to Use Aperture Priority Mode on Your Camera – https://www.makeuseof.com/reasons-to-use-aperture-priority-mode/
- This is How Your Camera’s Sensor Sees The World – https://www.diyphotography.net/this-is-how-your-cameras-sensor-sees-the-world/
- How Your Camera’s Image Processor Determines Color – https://www.digitalphotopro.com/news/how-your-cameras-image-processor-determines-color/
- Color theory, RAW files, and RAW developers – https://www.diyphotography.net/color-theory-raw-files-and-raw-developers/