The Only Three things you Need to know about DSLR<br />A practical guide to exposure<br />Guilherme Zühlke O’Connor<br />t...
Once upon a time…<br />
Once upon a time…<br />… there was SLR<br />
SLR – Single Lens Reflex<br />
SLR – Single Lens Reflex<br />A camera with a single lens<br />
SLR – Single Lens Reflex<br />A camera with a single lens<br />Use of reflection to send the image to the viewfinder<br />
SLR – Single Lens Reflex<br />A camera with a single lens<br />Use of reflection to send the image to the viewfinder<br />
Back in the old times…<br />
Back in the old times…<br />The body of the camera was responsible for the exposure time<br />
Back in the old times…<br />The body of the camera was responsible for the exposure time<br />The lens was responsible for...
Back in the old times…<br />The body of the camera was responsible for the exposure time<br />The lens was responsible for...
The camera body<br />Tipically, a camera body would be set to expose the film for a period of time ranging from 30 seconds...
The Lens<br />Has a diafragm that controls the area of the aperture through which the light enters the camera<br />The amo...
The Film<br />The film has an emulsion containing silver salts that react to the presence of light<br />The more light it ...
(*) That’s the ISO setting for ya<br />
The correct exposure needs a certain amount of light.<br />
The correct exposure needs a certain amount of light.<br />If you want a faster shot, you need a wider aperture. And vice ...
Alright, alright. What about DSRLs, then?<br />
Alright, alright. What about DSRLs, then?<br />Same thing but with a sensor in place of the film.<br />
Manual Mode<br />Most DSLRs have a manual mode setting<br />
Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />
Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />You set the aperture<br />
Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />You set the aperture<br />Setti...
Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />
Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the pictu...
Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the pictu...
Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the pictu...
f/4.8<br />f/32<br />
Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />
Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />
Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />The cam...
Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />The cam...
1/500 s<br />1/90 s<br />
But also for extreme light conditions<br />
Exposure time 104s, barely visible with the naked eye. Shot with ISO 50.<br />See more at http://www.facebook.com/media/se...
The ISO setting<br />Just as in film<br />
The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />
The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more nois...
The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more nois...
The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more nois...
ISO 1600<br />ISO 200<br />
All fancy exposure settings on your DSLR are based on these  three basic principles.<br />
?<br />Questions<br />Further reading<br />http://www.z-oc.com/blog/2007/08/understanding-cameras-and-photography/<br />ht...
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The only three things you need to know about DSRL

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All the fancy exposure options a DSLR camera has can be broken down into three things. And these are the only things you must know about it.

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The only three things you need to know about DSRL

  1. 1. The Only Three things you Need to know about DSLR<br />A practical guide to exposure<br />Guilherme Zühlke O’Connor<br />twitter.com/guioconnor<br />facebook.com/guioconnorPhoto<br />
  2. 2. Once upon a time…<br />
  3. 3. Once upon a time…<br />… there was SLR<br />
  4. 4. SLR – Single Lens Reflex<br />
  5. 5. SLR – Single Lens Reflex<br />A camera with a single lens<br />
  6. 6. SLR – Single Lens Reflex<br />A camera with a single lens<br />Use of reflection to send the image to the viewfinder<br />
  7. 7. SLR – Single Lens Reflex<br />A camera with a single lens<br />Use of reflection to send the image to the viewfinder<br />
  8. 8. Back in the old times…<br />
  9. 9. Back in the old times…<br />The body of the camera was responsible for the exposure time<br />
  10. 10. Back in the old times…<br />The body of the camera was responsible for the exposure time<br />The lens was responsible for the aperture<br />
  11. 11. Back in the old times…<br />The body of the camera was responsible for the exposure time<br />The lens was responsible for the aperture<br />The film was responsible to hold the projected image for eternity (or a sub-period of it)<br />
  12. 12. The camera body<br />Tipically, a camera body would be set to expose the film for a period of time ranging from 30 seconds to 1/2000 of a second (but your mileage may vary)<br />http://www.flickr.com/photos/buou/4884738437/<br />
  13. 13. The Lens<br />Has a diafragm that controls the area of the aperture through which the light enters the camera<br />The amount of light is proportional to the area of the aperture<br />http://www.flickr.com/photos/cycleologist/1454436980/<br />(*) See previous presentation on aperture at<br />http://www.slideshare.net/guioconnor/aperture-in-photography-or-how-boheh-happens<br />
  14. 14. The Film<br />The film has an emulsion containing silver salts that react to the presence of light<br />The more light it receives, the more grains of salt will react<br />The coarser the grains of salt the less light you need but the lower the definition of the resulting image(*)<br />http://www.flickr.com/photos/remediatethis/4353934129/<br />
  15. 15. (*) That’s the ISO setting for ya<br />
  16. 16. The correct exposure needs a certain amount of light.<br />
  17. 17. The correct exposure needs a certain amount of light.<br />If you want a faster shot, you need a wider aperture. And vice versa.<br />
  18. 18. Alright, alright. What about DSRLs, then?<br />
  19. 19. Alright, alright. What about DSRLs, then?<br />Same thing but with a sensor in place of the film.<br />
  20. 20. Manual Mode<br />Most DSLRs have a manual mode setting<br />
  21. 21. Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />
  22. 22. Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />You set the aperture<br />
  23. 23. Manual Mode<br />Most DSLRs have a manual mode setting<br />You set the exposure time<br />You set the aperture<br />Settings are based on the photometer indication<br />
  24. 24. Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />
  25. 25. Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the picture on<br />
  26. 26. Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the picture on<br />The camera works out how fast (or slow) it needs to be<br />
  27. 27. Aperture priority mode<br />Most DSLRs have an Aperture Priority Mode<br />You set the aperture you want to take the picture on<br />The camera works out how fast (or slow) it needs to be<br />Ideal to control the depth of field<br />
  28. 28. f/4.8<br />f/32<br />
  29. 29. Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />
  30. 30. Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />
  31. 31. Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />The camera works out the aperture<br />
  32. 32. Shutter Priority Mode<br />Most DSLRs have a Shutter Priority Mode<br />You set the exposure time of the shot<br />The camera works out the aperture<br />Ideal to control motion blur<br />
  33. 33. 1/500 s<br />1/90 s<br />
  34. 34. But also for extreme light conditions<br />
  35. 35. Exposure time 104s, barely visible with the naked eye. Shot with ISO 50.<br />See more at http://www.facebook.com/media/set/?set=a.224883254190744.71882.119779558034448<br />
  36. 36. The ISO setting<br />Just as in film<br />
  37. 37. The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />
  38. 38. The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more noise you have<br />
  39. 39. The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more noise you have<br />Different sensors have different qualities for a given ISO value<br />
  40. 40. The ISO setting<br />Just as in film<br />The higher the ISO the less light you need<br />The higher the ISO the more noise you have<br />Different sensors have different qualities for a given ISO value<br />ISO is based on the amount of light needed, not the amount of grain/noise produced<br />
  41. 41. ISO 1600<br />ISO 200<br />
  42. 42. All fancy exposure settings on your DSLR are based on these three basic principles.<br />
  43. 43. ?<br />Questions<br />Further reading<br />http://www.z-oc.com/blog/2007/08/understanding-cameras-and-photography/<br />http://www.slideshare.net/guioconnor/aperture-in-photography-or-how-boheh-happens<br />

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