Photography Unit Flashcards
For what war was the corona project implemented?
The Cold War (a neuclear weapons stand off between the USA and USSR and their repective allies).
What practical problem led to the development of the first digital cameras?
Film dropped from spy satalites was difficult to retrieve
Who produced the first consumer digital camera? In what year was it released?
Apple in 1994 (The Apple QuickTake 100)
What new technology did Olympus incorporate in the Deltis 1100?
Removable Media (Flash Memory Cards)
What was the resolution of the first digital cameras and how does that compare to today’s digital cameras?
~0.4mp (millions of pixels). Today is 12-36mp.
Why was the first Canon Rebel such a significant breakthrough camera for digital photographers?
It was the first interchangable lens camera under $1000.
What happens to Silicon when light hits it?
Electrons become very active in the silicone and this can be recorded as luminence information in a computer.
How is color interpreted by a digital sensor?
There are red, green, and blue color filters that cover each pixel on a camera sensor.
What does DSLR stand for?
Digital Single Lens Reflex
What is the purpose of the mirror in a DSLR?
To direct the light coming through the lens to an optical viewfinder.
What speed advantages does a DSLR have over other types of cameras?
They track moving subjects much better and there is very little shutter lag after pressing the button.
What advantages does a larger sensor have over a smaller sensor when it comes to low light ability?
Larger sensors have larger pixels and because more area is gathering light coming through the lens, they can use higher ISOs in dim light without suffering from digital noise (graininess).
Why are mirrorless cameras so much smaller than DSLRs?
They lack the mirror and prism that an optical viewfinder requires, so bodies can be less deep and lenses can be designed smaller.
What is advantage does the sensor in a mirrorless camera have over point and shoot cameras?
It is much larger like the sensors in large DSLR camera systems.
Why are point and shoot cameras suffering in today’s market?
So many people are using their cell phones as their point and shoot camera, companies are having difficulty making a profit with small cameras.
What parameter should you change to alter the depth of field in a picture?
Aperture.
What effect does shutter speed have on the look of a picture?
It changes how motion looks in a picture.
A small f-stop (aperture value) such as f2.8 achieves what look?
A shallow depth of field with a blurred out background.
A large f-stop (aperture value) such as f16 achieves what look?
A deep depth of field with near and far objects in focus.
Why is taking pictures in a gym so difficult? How can this difficulty be overcome.
Because the light is so dim, the shutter is open longer and players tend to be blurry. Raise the ISO so the sensor is more sensitive to light, open the aperture to let more light in so that shutter speeds can be faster, or use flash.
What does an overexposed and underexposed picture look like?
Overexposed is too bright. Underexposed is too dark.
What effect does changing the ISO to a higher number have in the camera and on a picture?
It makes the sensor more sensitive to light for low light situations, but the picture can look grainy (digital noise).
What setting need to be adjusted to freeze the wings of a humming bird in flight?
Choose a fast shutter speed to freeze the action.
What set up needs to be implemented for a landscape shot with near and distant items in focus?
Choose a large f-stop number so that everything is in focus. A tripod may be needed.
