Klomstad,+Swift,+Wetzel+SLR

DIGITAL PHOTOGRAPHY

Abby Wetzel, Caitlin Klomstad, Abby Swift


 * Assignment Description: Digital SLR**

The size of the opening in the lens also known as f/stop. (a smaller aperture has a bigger f/stop number--lets in less light) The numbers represent ratios of the lens focal length to opening. The lens focal length is how long the lens is in millimeters. So f/2 is a wider open aperture than f/16 because the numbers are fractions.
 * Aperture:**

 **Depth of field:** Portion of the picture that is in focus. Photographers intentionally will have a large or small depth of field in order to put things into more focus or less focus. For example, something with a large depth of field has more things in focus, whereas a small depth of field has one thing in focus, in foreground or background, to create emphasis and an interesting composition.

 **Shutter Speed: “amount of time the shutter is open” in digital the amount of time your image sensor senses the picture being taking. measured in seconds. You can change the way a picture will turn out by adjusting the shutter speed. For example, action pictures like the one to the left have a high shutter speed to allow for all of the details to be apart Of t **he photograph.
 * Noise: The appearance of color speckles present where there should be none. Can sometimes be intentional to give the picture a certain mood. Sometimes can happen by using high ISO film. Too low of light may cause this to happen as well.**


 * Histogram:** A graph representing the relative numbers of a variable or part of the range of variables. An example is a population of pixels with a certain value. It graphs the tones in your image from black (on the left) to white (on the right). The higher the graph the more pixels of that tone are in the image. Shows the range of light in an image.


 * Burst Mode:** Mode of operating a camera that allows for several snapshots to be taken. Useful for when someone is looking to take an action photo but they don’t know when would be the best time to take a picture. Good for sports, movement, etc.

**White Balance:** We adjust the white balance on a digital camera to get the colors to be as precise as they can be. Most camera’s allow you to choose manually from auto, tungsten, fluorescent, daylight/sunny, cloudy, flash, and shade. SLR camera’s allow you to define your own white balance reference. Before taking an actual shot, you can focus in on a particular (white of gray area), then the camera will use this reference when taking the actual shot.


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Self timer: It gives a delay between the shutter release and the shutter firing. Also used to reduce camera shake when taking photos in low light, or with long telephoto lenses**

**Pixels: Teeny dots that make up a computer image. The more pixels a computer monitor can display the better the image and quality. They are composes of a red, green, and blue dot, small enough to appear as a single eternity.**


 * Auto Focus vs Manual Focus:** Auto focus allows for quick snapshots to be taken without much thought from the photographer. Manual focus however, allows the photographer to take complete control of the photograph and the focus. This way the camera is no longer in charge, and the photographer can adjust the way things are focused to create an image the way they want to. Also a person may choose to use manual focus to get image to focus.

File Format:** Define each and explain how they differ from each other. .tiff – .tiff is the best format to use when you want to print pictures because it doesn’t cause the picture to lose quality when it is compressed. It is the most commonly used in graphic arts, the publishing industry, and other softwares. .jpeg – This is the most logical format to use for the web or small prints. When you save in this form the file is compressed causing it to lose some of the pictures quality. .raw – The .raw format it used a lot by professional photographers because it doesn’t change how the file is when being transfered from the camera to the computer. This file is the best for when you need to manipulate of change photographs.  <---JPEG <--RAW <--TIFF
 * ISO (international standardization organization): Determines how sensitive to image sensor is to light. The lower the ISO the slower the speed, and the higher the ISO number the faster the speed. For low ISO you will have a better quality picture, and a higher ISO you have a more grainy photo.**
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