The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor
                                                                             Onboard
                          ...
The Sensor
        •      CCD vs CMOS

                 •     Traditional Pros & Cons have been overcome

                ...
The Sensor



                           The Bayer Pattern Sensor



                                 © Sandro V Cuccia - ...
The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor
                                   Lens




                             © Sandro V Cuccia - www.Imagemedic.com...
The Sensor




                             © Sandro V Cuccia - www.Imagemedic.com

Monday, October 11, 2010
The Sensor
                                                                                   Light




                  ...
The Sensor

                           PIXELS = PIcture ELementS




                                  © Sandro V Cuccia -...
The Sensor
                           PIXELS = PIcture ELementS




                                  © Sandro V Cuccia - ...
The Sensor
                                  PIXELS = PIcture ELementS




                           DPI ? or PPI ?
     ...
The Sensor
                             Interpolation




                             © Sandro V Cuccia - www.Imagemedic....
The Sensor
                           PIXELS = PIcture ELementS
                           6 Megapixels = 6 Million Pixels...
The Sensor
                            The Megapixel Myth




                               © Sandro V Cuccia - www.Image...
The Sensor

                           The Sensor’s Physical Size




                                  © Sandro V Cuccia ...
The Sensor
                           Remember 35mm Film?




                                                            ...
The Sensor
                           Good Bye 35mm Film!




                               © Sandro V Cuccia - www.Image...
The Sensor
                           Good Bye 35mm Film!




                                                            ...
The Sensor
                                      The Sensor’s Physical Size




                           Point-n-Shoot  ...
The Sensor
                           The Sensor’s Physical Size




                                  © Sandro V Cuccia -...
The Sensor
                           The Sensor’s Physical Size




                                  © Sandro V Cuccia -...
The Sensor
                                   The Sensor’s Physical Size

                  But First ...
                ...
The Sensor
  Field-of-view – The Impact of Focal Length
                                                                  ...
The Sensor
  Field-of-view – The Impact of Focal Length




                                                              ...
The Sensor
                           Advantages of Smaller Sensors

                                                     ...
The Sensor
                           Disadvantages of Smaller Sensors


                Noise
             Lower ISO
    ...
The Sensor
                           Advantages of Full-Frame Sensors

                                   Very low noise
...
The Sensor
                           Advantages of Full-Frame Sensors


                                        No “Crop ...
The Sensor
                           Disadvantages of Full-Frame Sensors


                      Cost
                   ...
Sandro Cuccia
                           sandro@ImageMedic.com
                            w w w. I m a g e M e d i c . c ...
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DSLR Photography - The Sensor - Week 5

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In Week 5 we look at the camera sensor.

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DSLR Photography - The Sensor - Week 5

  1. 1. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  2. 2. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  3. 3. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  4. 4. The Sensor Onboard CPU 01 10 10 Amplifier A to D Converter 01 © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  5. 5. The Sensor • CCD vs CMOS • Traditional Pros & Cons have been overcome • Nikon - traditionally CCD (cheaper but slower) • Canon - traditionally CMOS (better but noisy) • Check your camera’s specifications © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  6. 6. The Sensor The Bayer Pattern Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  7. 7. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  8. 8. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  9. 9. The Sensor Lens © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  10. 10. The Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  11. 11. The Sensor Light The Camera Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  12. 12. The Sensor PIXELS = PIcture ELementS © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  13. 13. The Sensor PIXELS = PIcture ELementS © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  14. 14. The Sensor PIXELS = PIcture ELementS DPI ? or PPI ? The “Jaggies” “Pixelation” © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  15. 15. The Sensor Interpolation © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  16. 16. The Sensor PIXELS = PIcture ELementS 6 Megapixels = 6 Million Pixels Nikon D-50 width x height= Total Pixels 3008 x 2000= 6,016,000 © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  17. 17. The Sensor The Megapixel Myth © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  18. 18. The Sensor The Sensor’s Physical Size © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  19. 19. The Sensor Remember 35mm Film? 35mm © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  20. 20. The Sensor Good Bye 35mm Film! © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  21. 21. The Sensor Good Bye 35mm Film! 35mm Full-Frame Sensor © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  22. 22. The Sensor The Sensor’s Physical Size Point-n-Shoot Typical DSLR Full Frame (35mm) © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  23. 23. The Sensor The Sensor’s Physical Size © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  24. 24. The Sensor The Sensor’s Physical Size © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  25. 25. The Sensor The Sensor’s Physical Size But First ... It’s all based on good–ole 35mm! © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  26. 26. The Sensor Field-of-view – The Impact of Focal Length Lens Image Circle 35mm Film Frame Digital Sensor Frame © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  27. 27. The Sensor Field-of-view – The Impact of Focal Length An “Apparent” Magnification Factor! © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  28. 28. The Sensor Advantages of Smaller Sensors Smaller cameras Less expensive Good for telephoto shooter © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  29. 29. The Sensor Disadvantages of Smaller Sensors Noise Lower ISO No long exposures Overall Image Quality © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  30. 30. The Sensor Advantages of Full-Frame Sensors Very low noise Very high ISO Overall Image Quality Compatibility with legacy lenses © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  31. 31. The Sensor Advantages of Full-Frame Sensors No “Crop Factor” calculations © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  32. 32. The Sensor Disadvantages of Full-Frame Sensors Cost Bulk Legacy lenses may not be optimal © Sandro V Cuccia - www.Imagemedic.com Monday, October 11, 2010
  33. 33. Sandro Cuccia sandro@ImageMedic.com w w w. I m a g e M e d i c . c o m Monday, October 11, 2010

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