film-How to Make an Exposure


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film-How to Make an Exposure

  1. 1. How to make an Exposure The Trinity and Beyond
  2. 2. Film
  3. 3. The Trinity-Aperture <ul><li>Controls how large the opening is that lets light through to the sensor </li></ul><ul><li>Called f-stops </li></ul><ul><li>Full stops </li></ul><ul><ul><li>1,1.4, 1.8, 2.0, 2.8, 3.5, 4, 5.6, 8, 11, 16, 22,32 </li></ul></ul><ul><li>Controls depth of field </li></ul><ul><li>The higher the number the smaller the aperture hole is </li></ul><ul><li>The higher the number the more depth of field </li></ul><ul><li>To change the aperture use the ring on your lens </li></ul>
  4. 5. Depth of Field
  5. 6. The Trinity-Shutter Speed <ul><li>Controls how long light passes through to the film </li></ul><ul><li>Change shutter speed with shutter speed dial </li></ul><ul><li>Can be anywhere from 1/4000 second to 1 second to minutes </li></ul><ul><li>1/500=one five hundredth of a second </li></ul><ul><li>1” = one second </li></ul><ul><li>Anything under 1/60 will have motion blur from your hands shaking (called camera shake) </li></ul><ul><li>Bulb setting-shutter stays open as long as you press the button </li></ul>
  6. 7. Fast Shutter Speed
  7. 8. Slow Shutter Speed
  8. 10. ISO <ul><li>Controls how sensitive(fast) your film is </li></ul><ul><li>ISO cannot be changed mid roll </li></ul><ul><ul><li>ISO can only be changed with a change of film </li></ul></ul><ul><li>Runs in multiples </li></ul><ul><ul><li>50, 100, 200, 400, 800, 1600, 3200 </li></ul></ul><ul><li>100-400 for bright light </li></ul><ul><li>400-800 for less light </li></ul><ul><li>1600 for very dark situations </li></ul><ul><ul><li>After 800 you begin to have lots of grain </li></ul></ul><ul><li>Your ISO will affect the choices of aperture and shutter speed available to you </li></ul><ul><li>A higher ISO will allow you to use faster shutter speed </li></ul>
  9. 11. Add all three and you have an Exposure <ul><li>Now we have to combine all three to make our exposure </li></ul><ul><li>Set your ISO </li></ul><ul><li>Make choices about aperture and shutter and use your light meter to get the correct exposure </li></ul>
  10. 12. Light Meter <ul><li>Measures the light coming into the camera </li></ul><ul><li>This measurement allows you to choose the correct aperture and shutter speed </li></ul><ul><li>Press the shutter release half way down to get a light meter reading </li></ul><ul><li>The goal is to get the perfect exposure </li></ul><ul><ul><li>How your light meter indicated that exposure is correct depends on the camera </li></ul></ul><ul><ul><ul><li>Digital readout, swinging bar, green light… </li></ul></ul></ul><ul><li>Choose an aperture or shutter speed that you want to start with and then then scroll with the other (aperture or shutter speed)until you have the correct exposure </li></ul>
  11. 13. Underexposed Overexposed
  12. 16. Summary of Making an Exposure <ul><li>Set your ISO </li></ul><ul><li>Choose your shutter speed or aperture </li></ul><ul><li>Use your light meter to get the corresponding shutter speed or aperture </li></ul><ul><li>Take the photo and appease the film gods! </li></ul>