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Scanning Techniques for Photography, Art, and Design
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Capturing high dynamic range (HDR) scans


From:

Scanning Techniques for Photography, Art, and Design

with Taz Tally

Video: Capturing high dynamic range (HDR) scans

Here I'd like to show you how to create an HDR or High Dynamic Range scan. This is probably the simplest of all scans, because the intention of creating a High Dynamic Range scan is to just capture as much data as you can and offload the editing of that data to another application, be it Photoshop or Lightroom or the HDR program that LaserSoft makes. Basically all that you need to do, in fact, the only thing that's active in this dialog box, if you go to HDR Scan, is to set up your Frame here, set up any Scaling that you might want to do, and here we'll just take this image at 100%, 8x9 frame, 240 pixels per inch, for a resolution for printing on a high quality inkjet printer.
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  1. 6m 48s
    1. Welcome
      1m 11s
    2. What you should know before watching this course
      3m 54s
    3. Using the exercise files
      1m 43s
  2. 1h 0m
    1. Scanners and digital cameras
      3m 6s
    2. Types of scanners
      5m 2s
    3. Scanner location
      3m 19s
    4. What scanners and digital cameras create
      7m 22s
    5. Understanding grayscale values and channels
      3m 19s
    6. Understanding pixels and vectors
      4m 1s
    7. Choosing pixels or vectors
      2m 27s
    8. Resolving resolution
      6m 32s
    9. Working with interpolation
      3m 31s
    10. Understanding the effects of compression
      2m 4s
    11. Evaluating and correcting images with histograms
      8m 26s
    12. Saving to different file formats
      7m 4s
    13. Color management
      4m 23s
  3. 33m 22s
    1. Cleaning your scanner
      7m 31s
    2. Cleaning your images
      7m 47s
    3. Calibrating your scanner
      9m 13s
    4. Creating and applying a color management profile
      8m 51s
  4. 20m 55s
    1. Evaluating your scan challenges
      9m 46s
    2. Reproducing vs. assigning colors
      6m 20s
    3. Recognizing continuous tone (contone) vs. dot pattern images
      4m 49s
  5. 36m 32s
    1. Understanding bit depth
      8m 49s
    2. Selecting a scan mode
      8m 20s
    3. Sharpening and its effects
      10m 40s
    4. Creating and assigning color management profiles
      8m 43s
  6. 2h 25m
    1. Taking the Tazmanian Oath!
      3m 38s
    2. Choosing your weapon
      4m 2s
    3. Setting up your scanning preferences
      12m 14s
    4. Performing a prescan
      2m 53s
    5. Assigning a scan frame
      5m 40s
    6. Determining scan resolution
      7m 57s
    7. Choosing a scan mode and bit depth
      5m 53s
    8. Naming images
      1m 49s
    9. Scanning simple logos and line art
      12m 21s
    10. Scanning complex line art
      7m 33s
    11. Scanning grayscale contones
      13m 22s
    12. Scanning color contones
      13m 54s
    13. Sharpening
      9m 39s
    14. Scanning printed/screened or patterned images
      7m 1s
    15. Scanning positive transparency film
      12m 33s
    16. Scanning negative transparency film
      9m 11s
    17. Capturing high dynamic range (HDR) scans
      1m 47s
    18. Setting up wet scans
      14m 29s
  7. 1h 48m
    1. Scanning, converting, and using simple line art
      5m 32s
    2. Scanning and using detailed line art
      10m 52s
    3. Scanning landscapes
      15m 50s
    4. Scanning product shots
      11m 58s
    5. Scanning combo/complex images
      9m 3s
    6. Adjusting distressed images
      11m 12s
    7. Scanning images with no neutrals
      11m 57s
    8. Post-scan touch-ups
      2m 7s
    9. Scanning images for multiple uses
      10m 44s
    10. Automatic scanning
      10m 40s
    11. Streamlining big jobs with batch scanning
      5m 22s
    12. Using your manufacturer's scanning software
      3m 14s
  8. 27s
    1. Goodbye
      27s

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Scanning Techniques for Photography, Art, and Design
6h 53m Intermediate Oct 11, 2011

Viewers: in countries Watching now:

Review the scanning techniques graphics professionals and photographers use, while delving into workflow considerations and the advanced image-quality controls available in most scanning software. Author Taz Tally explains the core concepts, such as how resolution and interpolation affect scans; introduces the industry-standard SilverFast scanning software; and shares the settings to achieve the best results from a scan. The course also covers keeping your scanner and its parts clean and free of dust, and includes a variety of start-to-finish scanning tasks.

Topics include:
  • Understanding grayscale values and channels
  • Evaluating and correcting images with histograms
  • Saving to different file formats
  • Managing color
  • Cleaning the scanner and images
  • Reproducing versus assigning colors
  • Recognizing contone versus dot pattern images
  • Understanding bit depth
  • Scanning logos and line art
  • Scanning transparent film, positive or negative
  • Capturing high dynamic range (HDR) scans
Subjects:
Design Photography Scanning
Author:
Taz Tally

Capturing high dynamic range (HDR) scans

Here I'd like to show you how to create an HDR or High Dynamic Range scan. This is probably the simplest of all scans, because the intention of creating a High Dynamic Range scan is to just capture as much data as you can and offload the editing of that data to another application, be it Photoshop or Lightroom or the HDR program that LaserSoft makes. Basically all that you need to do, in fact, the only thing that's active in this dialog box, if you go to HDR Scan, is to set up your Frame here, set up any Scaling that you might want to do, and here we'll just take this image at 100%, 8x9 frame, 240 pixels per inch, for a resolution for printing on a high quality inkjet printer.

And then normally we would set our Scan Type at 48-24 bit or 48 bit color. What we'd do here is 48 bit HDR, or High Dynamic Range color. And notice what happens to all the tools when we select that. All the tools up here just go away, you have no way of actually editing your image. All you can edit is down here with the Scale and the Output and the Resolution, and we'll just do it at 100%, and that's all you need to do. And then you are not adjusting any Highlights or Shadows or Brightness or Contrast, you are just trying to collect all the data that's there, so the scanner will capture as much as it possibly can and then deliver that to your file.

Then all you need to do is click Scan. And if I create HDR files like this one, I'll always label them somehow as an HDR file like this. I use my standard editing scheme such as Tina_KBay_RGB and then hyphen HDR to let me know that this is an HDR scan and then at what resolution I created this image. Of course I save this as a TIFF, and then the scanner just captures all the data that's there, and makes no attempt to adjust it whatsoever, and just delivers it to the file.

And as far as your workflow is concerned, you intend to open that up in another application to edit it.

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