DSLR Photography - The Lens - Weeks 6 & 7

1,549 views

Published on

0 Comments
7 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,549
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
0
Comments
0
Likes
7
Embeds 0
No embeds

No notes for slide

DSLR Photography - The Lens - Weeks 6 & 7

  1. 1. The Lens © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  2. 2. The Lens The SLR Advantage © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  3. 3. The Lens What is Focal Length? © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  4. 4. The Lens Focal Length The Lens’ Magnifying Power © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  5. 5. The Lens Focal Length Focal Length © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  6. 6. The Lens Typical Lens Focal Length* Terminology Photography Extreme/Super < 21 mm Architecture Wide Angle 21 - 35 mm Wide Angle Landscape Street and 35 - 70 mm Normal Documentary Medium 70 - 135 mm Portraiture Telephoto Sports, Birds & 135 - 300+ mm Telephoto Wildlife * for 35mm equivalent cameras! © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  7. 7. The Lens Focal Length Determines Angle of View © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  8. 8. The Lens What is Magnification Factor? Max. Focal Length ÷ Min. Focal Length For a 28 - 280 mm Zoom Lens 280 ÷ 28 = 10X Magnification Factor © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  9. 9. The Lens Focal Length Multiplier & The Crop Factor © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  10. 10. The Lens Focal Length Multiplier & The Crop Factor © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  11. 11. The Lens Focal Length Multiplier & The Crop Factor 2X Crop Factor © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  12. 12. The Lens Focal Length Multiplier & The Crop Factor Sharpest Area © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  13. 13. The Lens Focal Length Multiplier & The Crop Factor Lens Image Circle The lens focal length does not change just because a lens is used on a different sized sensor. 75 mm equiv. The Angle-of-View changes. 50 mm equiv. 50 mm © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  14. 14. The Lens Focal Length Multiplier & The Crop Factor Lens Image Circle For Example: A 50 mm lens is always a 50 mm lens regardless of the sensor size. 75 mm equiv. 50 mm equiv. 50 mm © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  15. 15. The Lens What is Angle of View? © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  16. 16. The Lens Reduction Effect Angle of View Magnification Effect © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  17. 17. The Lens Lens Size & Weight Considerations Smaller sensors require lighter lenses 14-24mm © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  18. 18. The Lens Depth-of-Field Requirements As sensor size increases, the depth of field decreases for a given aperture. (when filling the frame with a subject of the same size and distance) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  19. 19. The Lens Depth-of-Field Requirements © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  20. 20. The Lens Depth-of-Field Requirements © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  21. 21. The Lens Depth-of-Field Requirements 35mm 50 mm lens 20’ APS-C 50 mm lens 20’ © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  22. 22. The Lens Depth-of-Field Requirements 35mm 50 mm lens Same Field of View 20’ APS-C 50 mm lens Greater Depth-of-Field 30’ = More Area “In Focus” © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  23. 23. The Lens Larger sensors (35 mm equiv) generally provide more control and greater artistic flexibility… … but at the cost of requiring larger lenses and more expensive equipment. © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  24. 24. The Lens Other Considerations Some specialty lenses are only available for the larger sensor sizes. > Tilt-Shift Lenses > Ultra-wide angle lenses (f/2.8 or larger) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  25. 25. The Lens Lenses Optimized for Sensor Size © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  26. 26. The Lens Lenses Optimized for Sensor Size © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  27. 27. The Lens Lenses Optimized for Sensor Size Canon: APS-C “EF-S” = 1.6X Multiplier EF-S 55-250mm (x 1.6) = 88-400mm (35mm equiv) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  28. 28. The Lens Lenses Optimized for Sensor Size Nikon (Sony & Pentax): APS-C “DX” = 1.5X Multiplier Nikkor DX 10-24mm (x 1.5) = 15-36mm (35mm equiv) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  29. 29. The Lens Lenses Optimized for Sensor Size Nikkor 80-200 mm (x 1.5) = 120-300 mm (35mm equiv) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  30. 30. The Lens Lenses Optimized for Sensor Size APS-C = 1.5X © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  31. 31. The Lens Lenses Optimized for Sensor Size “Four-Thirds” Format = 2X © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  32. 32. The Lens The Nikon Lens Simulator URL: tinyurl.com/ybf6b3j © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  33. 33. The Lens Lenses Optimized for APS-C Sensor Size PROS • You get the Field-Of-View of longer tele lenses but with cheaper/lighter lenses • You get the Field-Of-View of longer tele lenses but with a more extensive Depth of Field © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  34. 34. The Lens Lenses Optimized for APS-C Sensor Size CONS • Achieving the FOV of super wide angle lenses is difficult (eg; 24mm becomes 36mm) • A better Depth of Field makes creative selective focus more difficult © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  35. 35. The Lens TIPS FOR CHOOSING LENSES Wide Angle Lens: 10 - 20 mm [15 - 30 mm equiv] Landscapes Architecture Environmental Portraits Close-up Photojournalism © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  36. 36. The Lens TIPS FOR CHOOSING LENSES “Normal” or Standard Lens: 35 mm [52 mm equiv] f/ 1.8 good f/1.4 better An Angle of View matching the human eye. © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  37. 37. The Lens TIPS FOR CHOOSING LENSES Short Telephoto Lenses: 50 - 100 mm [100 - 200 mm equiv] Portraits Macro Lenses Closeups © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  38. 38. The Lens TIPS FOR CHOOSING LENSES Telephoto and “Super” Telephoto Lenses: >100 mm [> 150 mm equiv] Wildlife Sports Mostly Zoom lenses for APS-C © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  39. 39. The Lens TIPS FOR CHOOSING LENSES “KIT” LENSES 18-55 mm, f/3.5 - 5.6 18-105 mm, f/3.5 - 5.6 18-135 mm, f/3.5 - 5.6 28-135 mm, f/3.5 - 5.6 © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  40. 40. The Lens TIPS FOR CHOOSING LENSES Specialty Lenses Architecture Medical Professional Effects © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  41. 41. www.nikonusa.com/Nikon-Products/Camera-Lenses/index.page www.nikonusa.com/Nikon-Products/Camera-Lenses/index.page. © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  42. 42. www.usa.canon.com © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  43. 43. TI PS The Lens ASK YOURSELF ... • What are your goals? • Will you photograph professionally? • What subjects do you like to photograph? • How much money do you want to spend? • How long will you keep the lens? • How strong are you (or your spouse)? © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  44. 44. TI PS The Lens • Buy the most expensive ones you can afford! • Fixed Focal Length “Prime” Lenses are often of exceptional quality, but Zooms are much better now. • The Maximum Aperture of a lens will dictate the level of control you have over exposure settings. © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  45. 45. Depth-of-Field F-Stops for Depth of Field Typical Point-n-Shoot Typical Prosumer Camera Tuesday, November 2, 2010
  46. 46. TI PS The Lens • If possible, go for a zoom lens with a Fixed Maximum Aperture (instead of a Variable-Aperture Lens) © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  47. 47. TI PS The Lens • Don’t forget the Lens Hood! © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  48. 48. TI PS The Lens • Do You Use a “Protection” Filter? Skylight 1A Filter UV Filter © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  49. 49. TI PS The Lens • Do You Use a Circular Polarizing Filter? © Sandro V Cuccia - www.Imagemedic.com Tuesday, November 2, 2010
  50. 50. Sandro Cuccia sandro@ImageMedic.com w w w. I m a g e M e d i c . c o m Tuesday, November 2, 2010

×