Photo Terms by Harriet

Exposure value: the amount of light for an exposure. One number. It is used to calculate the combination of shutter speed and aperture at a given ISO speed of the sensor

Light Meter: measures how much light is coming into the camera. Negative numbers make the picture darker and positive make it lighter. Helpful because it allows you to see when you should change your ISO, shutter speed, or aperture

Depth of Field: the distance between the viewer and the subject. Telephoto lenses have smaller depth of field and wide angle lenses have a larger depth of field. A small depth of field has a sharp subject while the background becomes more blurry with the distance- good for portraits. A wider depth of field focuses on everything.

ISO: the sensor’s sensitivity to light. A low ISO is less sensitive to light so it is good to use in bright settings. Its better to use a higher ISO in dark settings.

Kelvin: the Kelvin scale measures visible light by temperature. The flash is -5500 degrees. The color changes according to the different temperature. With a higher temperature, the image appears more blue. Reds, blues and yellows can all be adjusted to make the light appear normal.

White Balance: natural light is different from artificial light. Cameras don’t adjust naturally to these changes in light- you can adjust the white balance to make the image appear more natural.

Shutter Speed: determines how long the shutter will be open, controlling how much light is being let in. faster shutter speed works better to capture subjects in motion.

Diaphragm: controls the amount of light that enters the camera through the lens. The diaphragm shuts out all other light so it doesn’t get overexposed. Should be smaller in brighter light (larger aperture-to take in less light) and larger in darker settings (smaller aperture-to take in more light).

Photo Terms by Sara

Exposure value, or EV, refers to the amount of light for a given exposure. It is denoted as a single number. Its value is subsequently used to calculate the correct combination of shutter speed and aperture at a given ISO speed of the sensor.

Light Meter measures how much light is being admitted into the camera. Negative numbers make a picture effectively darker and positive thus make it brighter. 

Depth of field is a measurement of how much distance is placed between the viewer and the subject being captured. Telephoto lens have a smaller depth of field and a wide-angle lens has a larger depth of field.

Diaphragm controls how much light enters the camera by determining the size of the opening call the aperture. The diaphragm functionally controls how much light can enter through the aperture. When taking a picture in a bright area, you should make the diaphragm smaller because that effectively makes the aperture larger and lets in a smaller amount of light, keeping the photo from coming out overexposed.

ISO refers to the sensor’s sensitivity to light. A higher ISO should be used in dark settings and a lower ISO is effective in brightly lit settings.  

Aperture When your lens is open very wide, the background is typically out of focus. Wide-open aperture is good for portrait photographs, when you don't want the background to interfere with your subject. When your lens is only open a small amount, everything from the foreground to the background is in focus. This aperture is used for landscape photographs, so that all of the scenery in the photo is in focus.

Shutter Speed measures, in seconds or fractions of seconds, how long the shutter of a camera stays open to let light in through the aperture. A faster shutter speed will keep the shutter open for a shorter amount of time, and a slower shutter speed lets it is for longer.  This becomes functionally relevant when trying to capture some sort of fleeting condition or subject in motion.

Kelvin Degrees: all visible light has a certain temperature in Kelvin that the camera is capable of altering. The about of Kelvin Degrees of the light coming from that object determines the colors that will be captured by the camera.

- Sara Coker

Terms

Diaphragm: controls the amount of light that enters the camera through the lens (the aperture). The diaphragm shuts out all other light so that overexposure is avoided. The diaphragm of the camera should be smaller (larger aperture) in bright light because it will let in less light. It should be larger (smaller aperture) in darker settings because it will let in more light.

Shutter Speed: The shutter speed determines how long the shutter will be open, controlling how long the picture is being captured and how much light is being let in. For images in motion, a fast shutter speed works best. The longer the shutter speed the more light is let in and visa versa. Longer shutter speeds works best on a still surface or tripod.

Depth of Field: The field of focus between a camera and a subject that is captured in an image. A small depth of field, as is frequently used in portraits, has a sharp subject and a background that gradually becomes more blurry with distance. A wider depth of field focuses on everything, like in a landscape shot. The length of a lens also affect the depth of field.

ISO: This refers to the sensor’s sensitivity to light. A low ISO is less sensitive to light and is therefore used in bright settings. In dark settings it s best to use a higher ISO.

Kelvins: Visible light is can be measured by temperature on the Kelvin scale. The color can change according to the different temperature. The higher the temperature is the more blue an image appears. Reds, blues, and yellows can be adjusted to make the light appear normal.  The white balance can be adjusted to adjust the way the lens perceives the light. This can be achieved automatically or manually depending on the camera.

Light Meter: The light meter displays the amount of light that entered your camera while capturing an image and is useful in allowing you to see how you should change your ISO, shutter speed, or aperture.


White Balance: Natural sunlight is a different color from the light produced by tungsten and fluorescent light bulbs. While our eyes adjust naturally to these changes, cameras do not. If your camera has a white balance setting, it will adjust automatically to different colored lights, and produce natural color no matter what the light source is. You can also adjust the white balance manually.


-Matt

Photography Terms-

ISO setting: ISO measures the sensitivity of the image sensor, the lower the number the less sensitive your camera is to light and the finer the grain


EV setting: denotes all combinations of a camera's shutter speed and relative aperture

Diaphragm: a thin opaque structure with an opening (aperture) at its center, objective is to stop the passage of light, except for the light passing through the aperture

Speed setting: common term used to discuss exposure time, the effective length of time a camera's shutter is open, The total exposure is proportional to this exposure time, or duration of light reaching the film or image sensor.

Depth of Field: the portion of a scene that appears acceptably sharp in the image

Aperture: the aperture of an optical system is the opening that determines the cone angle of a bundle of rays of light that come to a focus in the image plane

Kelvin degrees: measure of the temperature of color. A flash is- 5500 degrees. You can change the Kelvin degrees on your camera to show different types of light that you wish to see

Sensor: The type of device used in digital camera and camcorders to capture an image. The 2 most common types are known as CCD (charge-coupled device) and CMOS (complementary metal oxide semiconductor)

-Diagram of a Sensor:

Good Description of Key Terms on this website: http://www.cambridgeincolour.com/tutorials/digital-camera-sensor-size.htm


$Ian Gasco-Wiggin$

Digital Photography Terms by: Whitney Hodge

Exposure value refers to the amount of light for a given exposure. It is denoted as a single number. Its value is subsequently used to calculate the correct combination of shutter speed and aperture at a given ISO speed of the sensor.


Depth of field is the range of distance within the subject that is acceptably sharp. The depth of field varies depending on camera type, aperture and focusing distance. The depth of field does not abruptly change from sharp to unsharp, but instead occurs as a gradual transition.

A Diaphragm is a round device on the face of the camera that has an opening at its end known as the “aperture“. The function of the diaphragm is to make sure that light only enters the camera’s lens through the aperture. While the aperture can be widened or narrowed to allow more or less light into the camera, the diaphragm is meant to shut out all other extraneous light so that the film isn’t overexposed.

ISO range of a camera refers to how sensitive the camera is to light. For instance, a low ISO number (100 or under) is not very sensitive to light, and is best for shots in good lighting conditions. A higher ISO range means that the camera will be suitable for photography in darker conditions.

Aperture: When your lens is open very wide, the background is typically out of focus. Wide-open aperture is good for portrait photographs, when you don't want the background to interfere with your subject. When your lens is only open a small amount, everything from the foreground to the background is in focus. This aperture is used for landscape photographs, so that all of the scenery in the photo is in focus.

Shutter Speed: If you want to capture still photos of fast motion (like pressing pause on your VCR or DVD) you have to use a fast shutter speed. Many sports use very fast shutter speeds to capture the peak moment and freeze it in time. If the subject of your photo is not moving, or you want to show the passage of time (with a running river or waterfall), then you can use a slower shutter speed.

White Balance: Natural sunlight is a different color from the light produced by tungsten and fluorescent light bulbs. While our eyes adjust naturally to these changes, cameras do not. If your camera has a white balance setting, it will adjust automatically to different colored lights, and produce natural color no matter what the light source is. You can also adjust the white balance manually.

Photography Terms for the Final

ISO – is the sensitivity to light of the sensor. When it’s dark, you use a higher ISO. When it’s light, you use a lower ISO. The higher the ISO is, the grainier the photos appear.

DIAPHRAGM - controls the amount of light entering the camera. It also controls the size of the hole (i.e. aperture); thereby, permitting more or less light to pass through the lens to the film.  There are 8 blades in this part of the camera.

APERTURE: determines how much light is let into the camera. It enables the aperture to be made wider or narrower, thereby letting in more or less light. The wider the opening, the more light that is allowed into the camera. The more light coming into a camera, the less time is required for proper exposure.

SPEED -  determines how quickly the picture is taken. The slower the shutter speed, the more light the camera allows in. You use a faster shutter speed when you’re taking a picture of a fast moving object. Minimum speed in order to hold your camera is 1/30 of a second.

a quick shutter speed allowed me to catch the moving water

DEPTH OF FIELD - how much of the picture is in focus. The higher the aperture number, the whole picture is in focus. The lower the aperture number (therefore a larger aperture), the background will be blurred. If you take pictures close, you’ll have a small depth of field. If you take pictures far away, you’ll have a large depth of field. Pictures taken with a telephoto lens have a small depth of field, whereas photos taken with a wide angle lens, have a larger depth of field.

depth of field - created by telephoto lens

KELVIN DEGREES: you can change the setting based on what type of light you’re in. 5200 degrees is normal light. Tungsten light is 3200 degrees. The higher the degrees are, the more blue the picture is.

natural lighting

a picture taken with higher degrees

LIGHT METER - tells you the amount of light that is entering your camera. If you want your picture to be brighter, you change the light meter to + numbers. If you want your picture to be darker, you change the light meter to – numbers.

     -Two different settings: one for pictures taken w/out flash, and another when using the flash.

-Minnie

Photographic Terminology

Sensitivity to light of image sensor measured according to ISO system. When it’s dark the higher sensitivity to light is needed, so high ISO numbers are preferred. NB! The higher ISO number is the grainy image will be.

Diaphragm is a structure which controls the amount of light passing through the lens. In photography it refers to aperture or f-number. Typical ranges of apertures are f/2.8 – f/22, respectively from the maximum to minimum aperture. The smaller apertures (the bigger f-number) are used for the luminous objects or to increase the depth of field.

Exposure Value (EV). In cameras it refers to exposure compensation stated in terms of +EV or –EV. For example, +EV means to increase the exposure by using either a smaller shutter speed or a smaller f-number.  +EV is used for the dark objects whereas –EV for the luminous ones.

Normal lens is a lens with the focal length almost equal to the diagonal size of the image sensor; the perspective looks like natural.

Wide-angle lens is a lens with the shorter focal length; it is used for the panoramic pictures.

Telephoto lens is a lens with the longer focal length; it’s better to use them for portraits or in macro photography. 

--posted by Alex--

Photography Terms By: Sarah Cibelli (Cibelli117)

Diaphram- When you look into the lens of your camera, it is the hole you see. This hole (the diaphram) controls how much light enters the camera. The smaller the diaphram = less light and you would use this when it was very bright out so your photo is not over exposed. The larger the diaphram the more light is allowed in and you would use this in a dark setting to get more light into the camera to illuminate your photo.

Aperature- This is closely related to the diaphram. Again, the smaller the aperature, the less light and the larger, the more light is let in.

Shutterspeed- This determines how long the shutter stays open after snapping a photo. The longer the shutter is open the blurrier your photo will be unless you have a tripod. This is caused by the natural shake of your hand. Shutterspeed is determined in the fraction of a second. For example 1/1000 is much faster speed than 1/60.

Depth of Field- With a telephoto lens you have a smaller depth of field because the images ten to be closer up, so the background is blurry and your object is in focus. A wide-angle lens you tend to have a greater depth of field.

ISO (sensor sensitivity)- ISO determines how sensitive the image sensor is to the amount of light present. The higher the ISO the more sensitive it will be, therefore with a high ISO you are able to take a photo in low light. You would you and ISO of 800 or 1600 in low light but in normal light for example outside you may only need an ISO of 200 or 400.

Kelvin Degrees (Color Temp) - This is a setting based off the type of light your in. You can adjuct the degrees on your camera to get a different affect you want, for example more red or blue or yellow in your photo.The higher the degrees the more blue your picture will be.


SARAH CIBELLI

Photography Terms We Have Learned

ISO sensitivity expresses the speed of photographic negative materials
Since digital cameras do not use film but use image sensors instead, the ISO equivalent is usually given.
What ISO denotes is how sensitive the image sensor is to the amount of light present. The higher the ISO, the more sensitive the image sensor and therefore the possibility to take pictures in low-light situations.

When you look at the technical specifications of a digital camera, one of the very first specification mentioned is its maximum aperture and/or its aperture range.

Shutter speed is measured in seconds – or in most cases fractions of seconds. The bigger the denominator the faster the speed (ie 1/1000 is much faster than 1/30).

White balance – A function on the camera to compensate for different colors of light being emitted by different light sources

Histogram – A graphic representation of the range of tones from dark to light in a photo. Some digital cameras include a histogram feature that enables a precise check on the exposure of the photo

Depth of field- Depth of field is a measure of how much of a scene (from the front to the back of the image) will be in focus. Although not strictly digital photography terminology, the affect still applies to digital cameras.

FINAL

Final will on Monday the 13th in via del Mattonato from 15:00 to 17:30 P.M
See you on Monday
Best
S.A

Photo Terms with Pictures: By Alfredo Muskus/Tony Stark

Photo Terms

ISO-Film speed (the measure of a photographic film's sensitivity to light) is designated by a single, almost universally-accepted common system developed by the International Organization for Standardization which uses the initials “ISO” before the film-speed numbe.The ISO setting refers to the film speed of your camera.  Higher ISOs are used when it is darker outside and make the picture appear more grainly.  Lower ISOs are used when it is very sunny outside and are better quality pictures.  ISO's generally start at 100 and end at number around 6400.

Example: The following picture, taken of fast moving water was taken at an ISO Speed of 6400.

Depth of Field- The depth of field deals with the focus of the camera.  Pictures that are taken close up and have a very blurry background have a small depth of field, where landscape pictures generally have a wide depth of field, as the entire picture is usually in focus. Depth of field is controlled by the lens aperture, and extends for a distance in front of and behind the point on which the lens is focused. The higher the aperture, the whole picture is in focus. The lower the aperture, the background will be blurred. If you take pictures close, you’ll have a small depth of field. If you take pictures far away, you’ll have a large depth of field. Pictures taken with telephoto lenses have a small depth of field

Example: The follow picture was taken with a small depth of field

Light Meter- The light meter shows you how much light is being let into your camera and tells you if you need to change the shutter speed or the aperture.  The light meter helps you to make sure that the image you are taking a picture of has the right exposure. If you want your picture to be brighter, you change the light meter to + numbers. If you want your picture to be darker, you change the light meter to – numbers.

-Two different settings: one for pictures taken w/out flash, and another when using the flash The light meter can also give the perfect light for a good picture

Example: the following 2 pictures taken with the sun in front of me show the effect light meter can have. On jades image I lowered my light meter to -1.

 SPEED - A measure of the sensitivity to light of a photographic emulsion (combination). The shutter speed determines how long the shutter on the camera is open for and how much light it will let in.  This can range from 1/1000 of a second for bright days and multiple seconds for when it is dark outside.  When the shutter speed is longer than 1/30 of a second, it generally makes the image blurry unless you have a tripod or a flat surface.

Diaphragm- A ring or plate with a hole in the center that controls the amount of light entering the camera. An adjustable diaphragm in a lens controls the size of the hole, or aperture, thereby permitting more or less light to pass through the lens to the film. The Diaphragm of the camera is an opening that lets a certain amount of light into your camera.  The smaller the diaphragm, the less light is let into the camera.  Small diaphragms are used when it is bright, and larger ones are used when it is dark.  This also directly relates to aperture, as small diaphragms have large apertures and large diaphragms have small apertures.

Aperture- Relates to the diaphragm and controls how much light is let into the camera.  Small aperture=more light, large aperture=less light.

Kelvin Degrees- with Kelvin Degree you can change the setting based on what type of light you’re in. 5200 degrees is normal light. Tungsten light is 3200 degrees. The higher the degrees are, the bluer the picture is. All visible light has a certain Kelvin temperature that can be changed on a camera. The color of an image depends on the Kelvin Degrees of the light emitted from that object.  You can adjust the settings to change how the light in your photo looks, making it more blue yellow or red.

By: Alfredo Muskus- Fall 2010

Final Exhibition

Photo Terms: Quincy

Photo Terms

ISO - Film speed (the measure of a photographic film's sensitivity to light) is designated by a single, almost universally-accepted common system developed by the International Organization for Standardization which uses the initials “ISO” before the film-speed number - e.g. ISO 100.

EXPOSURE VALUE - The Exposure Value (EV) system, which originated in Germany in the 1950s, was created to be a simple-to-use substitute for the shutter speed/aperture combination, using a single number instead of two.
DIAPHRAGM - A ring or plate with a hole in the center that controls the amount of light entering the camera. An adjustable diaphragm in a lens controls the size of the hole, or aperture, thereby permitting more or less light to pass through the lens to the film.
SPEED - A measure of the sensitivity to light of a photographic emulsion (combination).
DEPTH OF FIELD - The range of distance in a scene that appears to be in focus and will be reproduced as being acceptably sharp in an image. Depth of field is controlled by the lens aperture, and extends for a distance in front of and behind the point on which the lens is focused.

DEPTH OF FIELD - how much of the picture is in focus. The higher the aperture, the whole picture is in focus. The lower the aperture, the background will be blurred. If you take pictures close, you’ll have a small depth of field. If you take pictures far away, you’ll have a large depth of field. Pictures taken with telephoto lenses have a small depth of field

KELVIN DEGREES: you can change the setting based on what type of light you’re in. 5200 degrees is normal light. Tungsten light is 3200 degrees. The higher the degrees are, the bluer the picture is.
LIGHT METER: a meter in your camera that tells you the amount of light that is entering your camera. If you want your picture to be brighter, you change the light meter to + numbers. If you want your picture to be darker, you change the light meter to – numbers.

-Two different settings: one for pictures taken w/out flash, and another when using the flash

photography terms

ISO: The ISO setting refers to the film speed of your camera.  Higher ISOs are used when it is darker outside and make the picture appear more grainly.  Lower ISOs are used when it is very sunny outside and are better quality pictures.  ISO's generally start at 200 and end at number around 3200.

Diaphragm:  The Diaphragm of the camera is an opening that lets a certain amount of light into your camera.  The smaller the diaphragm, the less light is let into the camera.  Small diaphragms are used when it is bright, and larger ones are used when it is dark.  This also directly relates to aperture, as small diaphragms have large apertures and large diaphragms have small apertures.

Aperture:  Relates to the diaphragm and controls how much light is let into the camera.  Small aperture=more light, large aperture=less light.

Depth of Field:  The depth of field deals with the focus of the camera.  Pictures that are taken close up and have a very blurry background have a small depth of field, where landscape pictures generally have a wide depth of field, as the entire picture is usually in focus.

Speed:  The shutter speed determines how long the shutter on the camera is open for and how much light it will let in.  This can range from 1/1000 of a second for bright days and multiple seconds for when it is dark outside.  When the shutter speed is longer than 1/30 of a second, it generally makes the image blurry unless you have a tripod or a flat surface.

Kelvin degrees: All visible light has a certain Kelvin temperature that can be changed on a camera. The color of an image depends on the kelvin degrees of the light emitted from that object.  You can adjust the settings to change how the light in your photo looks, making it more blue yellow or red.

Light meter:  The light meter shows you how much light is being let into your camera and tells you if you need to change the shutter speed or the aperture.  The light meter helps you to make sure that the image you are taking a picture of has the right exposure.

-jaderade

review of photo terms

ISO - high ISO = grainy. It is the sensitivity to light of the sensor. When it’s dark, you use a higher ISO.

DIAPHRAGM - controls the amount of light entering the camera. controls the size of the hole, or aperture, thereby permitting more or less light to pass through the lens to the film.  there are 8 blades in a camera  


APERTURE: determines how much light is let into the camera. enabling the aperture to be made wider or narrower, thereby letting in more or less light. 

SPEED -  determines how quickly the picture is taken. The slower the shutter speed, the more light the camera lets in. Minimum speed to hold camera = 130/1. 
DEPTH OF FIELD - how much of the picture is in focus. The higher the aperture, the whole picture is in focus. The lower the aperture, the background will be blurred. If you take pictures close, you’ll have a small depth of field. If you take pictures far away, you’ll have a large depth of field. Pictures taken with a telephoto lense have a small depth of field

KELVIN DEGREES: you can change the setting based on what type of light you’re in. 5200 degrees is normal light. Tungsten light is 3200 degrees. The higher the degrees are, the more blue the picture is.

LIGHT METER: a meter in your camera that tells you the amount of light that is entering your camera. If you want your picture to be brighter, you change the light meter to + numbers. If you want your picture to be darker, you change the light meter to – numbers.

     -Two different settings: one for pictures taken w/out flash, and another when using the flash.

-Minnie