Could I have the code for the 3D pinhole camera?

The closer you are to the image you are trying to capture the farther away it looks. Its like looking in the wrong end of a telescope.

What if you wanted a clear,big and bright picture?

You can just take an image with minimum focal length and aperture and then later magnify it using software.

Why dose it get smaller when you go closere

Whenever the light comes through the hole in the middle, if the wall is closer, then it will hit the wall without traveling as far from the center. Thus, the image will stay in the middle of the wall, and be smaller as well.

Why is the image upside down

The light rays from the bottom of the image are going through the hole to the top of the other side. Same with the top, going to the bottom of the other side. If you still don't understand think of it this way: e.g. the top of a tree has to reflect light through a hole halfway down the wall since the hole is lower than the top of the tree, the light will be going down. After the light passes the hole, it continues to go down until it is projected on the opposite wall. Because it continues to go down, it will be on the bottom of the opposite wall. Do that with every point on the tree, and the image flips itself. Hope this helped for anyone wondering the same thing!

Main content

The effect of focal distance

Google Classroom

Simulation

Below is a simulation of a pinhole camera. Try capturing images using different focal distances and then answer the questions underneath.

Questions

Increasing the focal distance makes the field of view

. This means that objects in the image appear

Increasing the focal length also causes images to appear

. This is because the rays of light are

spread out by the time they hit the image plane.

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Mia
Posted 7 years ago. Direct link to Mia's post “Could I have the code for...”
Could I have the code for the 3D pinhole camera?
Button navigates to signup pageComment on Mia's post “Could I have the code for...”
(74 votes)
Answer
- Philip Avada
  Posted 6 years ago. Direct link to Philip Avada's post “The closer you are to the...”
  The closer you are to the image you are trying to capture the farther away it looks. Its like looking in the wrong end of a telescope.
  Comment on Philip Avada's post “The closer you are to the...”
  (35 votes)
Sienna_Szeto
Posted 5 years ago. Direct link to Sienna_Szeto's post “What if you wanted a clea...”
What if you wanted a clear,big and bright picture?
Button navigates to signup pageButton navigates to signup page
(12 votes)
Answer
- Khan academy
  Posted 4 years ago. Direct link to Khan academy's post “You can just take an imag...”
  You can just take an image with minimum focal length and aperture and then later magnify it using software.
  Comment on Khan academy's post “You can just take an imag...”
  (12 votes)
4081627
Posted 4 years ago. Direct link to 4081627's post “Why dose it get smaller w...”
Why dose it get smaller when you go closere
Button navigates to signup pageComment on 4081627's post “Why dose it get smaller w...”
(4 votes)
Answer
- ArrowJLC
  Posted 4 years ago. Direct link to ArrowJLC's post “Whenever the light comes ...”
  Whenever the light comes through the hole in the middle, if the wall is closer, then it will hit the wall without traveling as far from the center. Thus, the image will stay in the middle of the wall, and be smaller as well.
  Button navigates to signup page
  (5 votes)
rahelyalow
Posted 5 months ago. Direct link to rahelyalow's post “Why is the image upside d...”
Why is the image upside down
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(4 votes)
Answer
- Traiden
  Posted 3 months ago. Direct link to Traiden's post “The light rays from the b...”
  The light rays from the bottom of the image are going through the hole to the top of the other side. Same with the top, going to the bottom of the other side. If you still don't understand think of it this way: e.g. the top of a tree has to reflect light through a hole halfway down the wall since the hole is lower than the top of the tree, the light will be going down. After the light passes the hole, it continues to go down until it is projected on the opposite wall. Because it continues to go down, it will be on the bottom of the opposite wall. Do that with every point on the tree, and the image flips itself. Hope this helped for anyone wondering the same thing!
  Button navigates to signup page
  (2 votes)
:) :(
Posted 3 years ago. Direct link to :) :('s post “this will make it better:...”
this will make it better: focal distance 173 and aperture 5
Button navigates to signup pageComment on :) :('s post “this will make it better:...”
(4 votes)
Answer
Levi Bueckert
Posted 2 years ago. Direct link to Levi Bueckert's post “Aperture=2 distance=146 i...”
Aperture=2
distance=146 is clear
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(3 votes)
Answer
- moorenic360
  Posted 2 years ago. Direct link to moorenic360's post “That is so much better :o”
  That is so much better :o
  Button navigates to signup page
  (2 votes)
KamranF
Posted 7 months ago. Direct link to KamranF's post “again how do i flip the i...”
again how do i flip the image the right way up
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(3 votes)
Answer
- Matthew the learner
  Posted 7 months ago. Direct link to Matthew the learner's post “i dont think you can”
  i dont think you can
  Comment on Matthew the learner's post “i dont think you can”
  (2 votes)
naihriti.navya
Posted 3 years ago. Direct link to naihriti.navya's post “why is it upside down...?...”
why is it upside down...? im a seventh grader btw im doing this for fun :>
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(4 votes)
Answer
- Joris Vizbaras
  Posted 2 years ago. Direct link to Joris Vizbaras's post “it is upside-down bcuz th...”
  it is upside-down bcuz the light goes upwards through the aperture.
  Button navigates to signup page
  (0 votes)
Jared Lipman
Posted 6 years ago. Direct link to Jared Lipman's post “Um the simulation isn't w...”
Um the simulation isn't working for me. The window it's in is too small. Yes, I checked by browser zoom and system zoom.
Button navigates to signup pageComment on Jared Lipman's post “Um the simulation isn't w...”
(5 votes)
Answer
- vanuzant000
  Posted 3 years ago. Direct link to vanuzant000's post “Yeah, sometimes it bugs o...”
  Yeah, sometimes it bugs out so try going to a different lesson and come back.
  Button navigates to signup page
  (1 vote)
Andrew.E.Zhuravlev
Posted 3 years ago. Direct link to Andrew.E.Zhuravlev's post “why is the picture perfec...”
why is the picture perfect when both are all the way down but blurry when all the way up?
Button navigates to signup pageComment on Andrew.E.Zhuravlev's post “why is the picture perfec...”
(3 votes)
Answer

Pixar in a Box

Course: Pixar in a Box > Unit 6

The effect of focal distance

Simulation

Questions

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