An online book of Common Sense Photography, by Rhett Stuart

Table of Contents

The Digital Camera and the Human Eye

digital camera

Digital Camera Human Eye
Mega Pixels 10-20 80 (500 with processing) 1
ISO 2 50-3,200 1,000
Focal Length 14mm-1,000mm 18mm
Shutter Speed 100 hrs to 1/8,000/second 100 to 1/8th of a second
Dynamic Range 64 to 1 20,000 to 1 3

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  1. What is Visualization?
  2. Camera History and a Light Concept
  3. How the Shutter and Mirror Work
  4. What Do I Need to Know About Camera Lenses?
  5. How the Camera Aperture Works
  6. What is Depth of Field?
  7. What is Camera Perspective?
  8. What is Bokeh?
  9. Camera Sensors in SLR Digital Cameras
  10. The Camera Brain and Visualization
  11. Tips on Getting a Good Exposure
  12. Sunny 16 Rule
  13. How to Set White Balance
  14. Should I Get a Compact Digital Camera or a SLR Digital Camera?
  15. Should I Use jpeg or raw or dng as My File Format?
  16. What Mega Pixel Camera Should I Get?
  17. The Best Way to Save Digital Pictures
  18. What is Dynamic Range?
  19. The Only Camera Filters You Need
  20. How to Pick the Best Tripod
  21. What is Macro Photography?
  22. How to Take Better Portraits
  23. Tips on Getting Better Results with Wedding Photography
  24. How to Take Outdoor Sports Photographs
  25. How to Take Indoor Sports Photographs
  26. How to Take Wildlife Photographs in the Wild, and at the Zoo
  27. Tips on Landscape Photography
  28. What is Reciprocity Failure in Photography?
  29. How to Take Digital Panoramas
  30. Best Way to Take and View 3D photographs
  31. Which is Better: Film or Digital?
  32. Lighting is the Most Critical Thing for Good Photographs
  33. How to Find Out the Latest News on Canon and Nikon Cameras
Other Rhett Stuart web sites:
  1. The mega pixel of the human eye is about 80 mega pixels but with eye movement, stereo vision, and brain processing the human eye produces about 500 mega pixels. The mega pixel of the human eye is difficult to calculate because the eye moves almost constantly and this helps calculate the image. Also, the visual acuity is much greater directly in the middle of what we see (try reading a sign that you are not looking directly at!) The eye resembles a video camera more then a photographic camera. However, the eye has many similarities to a digital camera, and these similarities help to understand photographic concepts.
  2. These are estimates only and given to help understand the advantages and handicaps of digital cameras, and to help explain the difference between what we see and what ends up in our photographs. This is explained and developed in other pages. The important thing is to understand the concepts.
  3. The Dynamic Range is the range of light that can be seen or recorded, and the subtle shades of light within these ranges. So the human eye is still much more sensitive and superior to digital photography, about 20 times more.