Class 007 shutter & aperture

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  1. 1. Shutter SpeedBy: Amit Chawla
  2. 2. Blurred v/s Frozen Shots
  3. 3. Blurred v/s Frozen Shots
  4. 4. What is shutter speed? It is essentially the 1/8000,indicator of the1/4000,duration / timing 1/1000,at which the 1/500,shutter curtain 1/250,opens up and 1/125,closes during an 1/60,exposure process 1/30, 1/15, 1/8, 1/4, 1/2, 1 etc.
  5. 5. Shutter speed dial The shutter speed dial provide the selectionof shutter speeds, and indicates the timing ofthe shutter open and closes. A fast shutter speed such as 1/500 sec willclose faster than, say 1/2 sec exposure time.In this case, the shutter curtain will close veryfast and thus resulting in less light enteringthe film.
  6. 6. What does shutter speed do ? Different shutter speeds yield different kind ofvisual effect on a final photograph. A fast shutter speed can freeze actionwhile slow speed can blur your image
  7. 7. Examples of Slow Shutter Speed
  8. 8. Examples of Slow Shutter Speed
  9. 9. Examples of Fast Shutter Speed
  10. 10. Examples of Fast Shutter Speed
  11. 11. Creative effect of Combination
  12. 12. Aperture By: Amit Chawla
  13. 13. What is Aperture? The aperture is like a pupil in your eye. The pupilopening is bigger in a room with less light to allow youto see and Vice Versa. In Photography, Aperture is referred to lensdiaphragm opening inside a photographic lens. The size of this diaphragm opening in a camera lensREGULATES amount of light that passes through ontofilm inside the camera. The size of an aperture in a lens can either be a fixedor adjustable type (like an SLR camera).
  14. 14. How is aperture calibrated ?Aperture size is usuallycalibrated in f-numbers. Theseare ratios. i.e. f 22 (f/22), f16 (f/16), f/11, f/8.0, f/5.6, f/4.0, f 3.5 ,f/2.8,f/2.0, f/1.8 etc.
  15. 15. What it means is f/16 will let in 1X the amount of light than adiaphragm opening of f/22 and so forth; f/4.0 will let in 1X lesser than that of f/2.8 etc. Aperture + Shutter Speed = Exposure Aperture, along with duration/timing of shutter curtainopening, BOTH contribute to a the formation of anexposure. Aperture also affects "depth of field"
  16. 16. Exposure Balancing Shutter and Aperture:Exposure is about different combinations ofshutter and f-stop settings. Thesecombinations can drastically affect thefinished picture.
  18. 18. Amount of light
  19. 19. Amount of light
  20. 20. Relation between A and SS Shutter SpeedAperture Slow (1/30 sec)Fast (1/1000 sec)SmallOverexposed a slow Correct a fast shutterf-stop shutter speed and small f- speed lets in less light, but a(f4.5) stop will both let in more light small f-stop lets in moreLargeCorrect a slow shutter Underexposed a fastf-stop speed lets in more light, but ashutter speed and large f-(f22)large f-stop lets in lessstop both let in less light