Summative Review Flashcards
When using a pinhole camera, why is the image produced, inverted?
Because the straight lines of line bounce off the top of the object, then must descend in order to reach the pinhole. The light passes through the hole, still in a straight line, and reaches the bottom of the wall.
What is a pinhole camera?
A simple camera without a lens, but a tiny aperture, a pinhole, and light proof box with a small hole in one side. Light from a scene passed through the aperture and projects an inverted image on the opposite side. This is known as the camera obscura effect.
When a pinhole is placed between a person and the wall, what does it do?
It eliminates all other light sources and an image is produced. This is because the the pinhole focuses the rays of light making them only strike one point. This stops the rough surfaces of objects from bouncing off at many different angles, as they normally would.
Pinhole VS SLR
Pinhole: •light tight box= foamcore •Aperture = pinhole •shutter = tab •light sensitive material = photopaper
Both: •light tight box •aperture •shutter •light sensitive material
SLR:
•light tight box + mirror and gears and more settings
•aperture = adjustable lens
•shutter = adjustable curtain
•light sensitive material = film or light sensor
What is ISO?
The light sensitivity of the paper, film or sensor.
What does a small number ISO do?
Makes it not as grainy, sharper image and you will need more light.
What does a larger number ISO do?
Makes it more grainy, and much more efficient in low light.
ISO on pinhole?
The photopaper.
What is aperture?
Controls the size of the opening
What does a smaller number (f4) aperture do?
Larger lens opening allowing more light into the camera, therefore shallow depth of field.
What does a larger number (f22) aperture do?
Smaller lens opening and lets less light into the camera, therefore deep depth of field.
What is shutter?
Controls the amount of time the camera allows light in AKA exposure time
What does a slower shutter speed (bigger number = 1/1000) do?
Shorter exposure time, freezes action, allows less light in.
What does faster shutter speed (smaller number = 1/30) do?
Longer exposure time, Blurs actions, lets more light in.
What is the sunny 16 rule?
- Set the shutter speed to the setting nearest to the ISO film speed.
- Set the f-number according to weather chart (provided)
What is bracketing and how is it done?
The process of taking 5 photos, purposely under and over exposed in order to ensure the best exposure. You keep the shutter or aperture setting, then increase by 1, then 2, then decrease by 1, then 2, of the other, depending on whether it’s wanted blurred, shallow depth etc…
What is deep depth of field?
The larger the aperture the deeper the field, more objects focused
What is shallow depth of field?
The smaller the aperture, the shallower the field, less focused objects
What’s depth of field?
Distance between the nearest and farthest objects in a scene that are in focus. The size of the aperture affects it.
What are the steps to go from an undeveloped image on a roll of film to a developed roll of film?
Step 1: take black canister from camera, put in closed black bad with reel and big canister.
2: put in reel, then reel into canister, while all still inside the bag.
3: pour developer into canister for 7 and 1/2 minutes (500ml)
4: pour in stop for 1 min (500ml)
5: fix for 3 min (500ml)
6: take out film from reel and canister then rinse
