Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

P025 Lens Optics

TermDefinition
DIGITAL ZOOM A camera feature that crops the image to a smaller size, making it appear larger, but resulting in a loss of quality.
OPTICAL ZOOM Zoom feature moves that the glass in the lens (elements) to change the increase the magnification and angle of view (image size) without affecting the quality.
FOCAL LENGTH The distance between the optical center of the lens and the focal plane, and it determines the magnification, compression and angle of view of an image.
IMAGE STABILIZTATION A lens feature to reduce blurring that is caused by slight movements of the camera during exposure at slower shutter speeds.
LENS FLARE Lens flare appears as round hazzy artifacts in an image due to internal reflections inside the lens when pointed toward a bright point of light.
LENS SHADE A device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare
NORMAL LENS a lens that reproduces a field of view that appears "natural" to a human observer.
TELEPHOTO LENS A lens with a focal length that is longer than normal. As a lens gets more telephoto, its magnifiction increases and its angle of view decreases.
WIDE ANGLE LENS A lens with a focal length that is shorter than normal. As a lens gets more wide-angle, its field of view increases.
MACRO LENS A special type of lens or lens setting used for photographing objects at extremely close distances.
ZOOM A lens that has a variable focal length, often wide-angle to telephoto, that allows photographers to change how much of a scene can be captured by the camera.
PRIME LENS a lens that has a fixed focal length, not a zoom lens.
Created by: dmaww
Popular Graphic Arts sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards