Key Concepts and Settings Flashcards
What is aperture?
The adjustable opening inside a lens that allows light to reach the camera.
What is the difference between a big and small aperture?
A big aperture lets in more light, a small aperture lets in less light. Small apertures are good for overall sharpness, big ones for low-light shooting and selective blurring.
The focal length is…
The distance between the lens and the image sensor, measured in mm. 35 is standard
A shorter, wide-angle lens will provide a_____, while a telephoto lens will provide _____.
Less than 35mm provides a broader view than what the eye would see, greater than 35mm will magnify and narrow the field of view
Why is a DSLR lens better than a point and shoot?
- Can swap it out
- Wider aperture allows for faster shutter speed and greater control of depth of field.
- Bigger diameter means greater light and detail
How do you adjust focal length?
Turn the ring on the lens
A small f-stop means a ___ opening
Large
A large f-stop means a ___ opening
Small
What is depth of field?
How much of the photo is in focus
With a small aperture, the image will have a _____ depth of field, and ____
With a small aperture, there will be a deep depth of field and everything will look crisp
What is aperture mode good for?
Portraits
Closeups
Landscapes
Good F-stop for landscapes and bright sunlight?
f/22 to f/14
Good f-stop for portraits and indoors?
f/11 to f/5.6
Good f-stop for Closeups and dim lighting?
f/4 or lower
The shutter blocks all light from the ___ until you ____
The shutter blocks all light from the image sensor until you press the shutter button to open it
What does a “bulb” setting do?
Keeps the shutter open as long as the shutter button is held down
Shutter mode is good for…?
Sports and action Wildlife and pets Indoors Nighttime Children
A low shutter speed ___, a high shutter speed ____
A low shutter speed lets in more light and a high shutter speed lets in less
Good shutter speed for sports and other action shots?
1/1000 sec. and faster
Good shutter speed for sunlight, long telephoto lens, wildlife, and children?
1/200 to 1/800 sec.
Good shutter speed for shade, outdoor portraits, and flash photography?
1/100 to 1/200 sec.
Good shutter speed for nighttime and other dim lighting?
1/30 sec. and lower. Requires tripod or other stabilizer
The higher the ISO, the ____ the light sensitivity. A camera set at ISO 100 needs ____ than a camera at ISO 800.
The higher the ISO, the greater the light sensitivity. A camera set at ISO 100 needs more light to properly expose an image than a camera at ISO 800.
What happens with an increase in ISO?
Image quality degrades in the form or noise.
