A camera raw file contains unprocessed image data from a camera's sensor along with metadata. It is a digital negative that provides more flexibility than JPEGs. RAW files are larger but retain all image data, allowing for more control over processing. Common RAW formats include Canon CR2 and Nikon NEF. The digital negative format DNG is an open standard supported by Adobe. Camera RAW workflow involves importing, editing, and exporting RAW files using software like Adobe Camera RAW or Lightroom.

1. Introduction to Camera RAW File
and Camera RAW Workflow
Rachabodin Suwannakanthi

2. What is Camera RAW file?
A camera raw file contains unprocessed, uncompressed
grayscale picture data from a digital camera’s image sensor,
along with information about how the image was captured
(metadata).
+ Grayscale Image
METADATA
ref: http://help.adobe.com/en_US/Photoshop/11.0/WS9C7E818F-765A-43e7-8108-75BA2BC9514E.html 2

3. Camera RAW Software
Grayscale Image Color Image
+ CAMERA RAW
SOFTWARE
+
METADATA METADATA
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4. Camera Processing for RAW and JPG
Analog to Digital Image Processor
Conversion - Demosaicing JPG
- White Balancing
8 bit
Image Sensor - Contrast Adjusting
- Color Enhancement
- Sharpening
- Compressing
Digital Negative
RAW
12 bit, 14 bit
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5. Pros and Cons of JPG
Pros Cons
• Small file sizes maximize • Less control over the way
memory card and hard the final image appears
drive space • Compressed files lose
• Easy to view and edit with some image data
any image editing program • Harder to correct mistakes
• Easy to publish of color and exposure
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6. Pros and Cons of RAW
Pros Cons
• No image data is lost • very large files
• Provide you with plenty of • Require special programs
flexibility when deciding and powerful computers
how the final image looks to view and edit
• Allow you to correct • Require time and effort to
mistakes made at the time "develop"
of exposure
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7. RAW File Format
Brand RAW Format
Adobe .dng
Canon .cr2 .crw
Epson .erf
Fuji Film .raf
Kodak .kdr .dcr
Mamiya .mef .mos
Minolta .mrw
Nikon .nef
Olympus .orf
Panasonic .raw
Pentax .ptx .pef
Sigma .x3f
Sony .arw .srf 7

8. The Digital Negative (DNG)
• DNG is an open non-proprietary raw format was proposed by
Adobe
• Pros:
• No need xmp files
• supported in all Adobe applications
• single raw processing solution
• Smaller file size (Lossless Compression)
• Cons:
• Conversion from RAW to DNG takes extra time
• Can’t be opened by proprietary raw converter 8

9. Camera RAW Workflow
Shooting in Images Editing Publishing
RAW files images
Importing
Organizing
Comparing/Selecting
Inputting Metadata
Editing
Exporting 9

10. Camera RAW Workflow with Adobe Bridge
Shooting in Images Editing Publishing
RAW files images
Adobe Bridge
- Importing
- Organizing
- Comparing/Selecting
- Inputting Metadata
- Exporting
Adobe Camera RAW
- RAW Editing
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11. Camera RAW Workflow with Lightroom
Shooting in Images Editing Publishing
RAW files images
Adobe Photoshop Lightroom
- Importing
- Organizing
- Comparing/Selecting
- Inputting Metadata
- RAW Editing
- Exporting
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12. Thank you
Rachabodin Suwannakanthi
http://www.rachabodin.com/
http://www.slideshare.net/rachabodin