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The Camera

The Camera. Which of the following is not important when determening the shutter speed you should use on a camera?. The intensity of light striking the subject The distance between the subject and the camera The diameter of the lens The focal length of the lens

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The Camera

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  1. The Camera

  2. Which of the following is not important when determening the shutter speed you should use on a camera? • The intensity of light striking the subject • The distance between the subject and the camera • The diameter of the lens • The focal length of the lens • None of the above – all are important!

  3. Why would you ever want a bigger f/# ?

  4. The Eye

  5. MATTHEW 18:1-3 1. At the same time came the disciples unto Jesus, saying, Who is the greatest in the kingdom of heaven? 2. And Jesus called a little child unto him, and set him in the midst of them, 3. And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven.

  6. Glasses • You don’t have to worry about what goes on in your eye!

  7. A Near-sighted person Far point— The furthest point you can see clearly without correction Glasses take an object further away and puts an image inside your far point so you can see it.

  8. What kind of lens does a near-sighted person need in their glasses? • A converging lens (f>0) • A diverging lens (f<0)

  9. Lens Image at Far Point Object

  10. Diopters

  11. A Far-sighted person Near point— The closest point you can see clearly without correction Take something closer and puts it farther away so you can see it.

  12. Reading question: If I’m far-sighted I need a • Converging lens • Diverging lens

  13. Lens Image at Near Point Object

  14. When can a diverging lens make a real image?

  15. Assuming the two lenses are made of the same material, which will have a larger f? A B C – they are the same

  16. If the lens had a lower index of refraction, the image be A.Larger, further away B.Smaller, further away C.Larger, closer D.Smaller, closer E. No change

  17. If I put a glass lens (n=1.5) in water (n=1.333), what happens to the focal length of the lens? • It gets bigger. • It gets smaller. • It stays the same. • It depends. • I can’t simply characterize the lens with a single focal length anymore.

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