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Old 11-02-2010, 11:16 AM
Dcrymes99ranger Dcrymes99ranger is offline
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Default Photography terms

Well since the photography section is starting to get more active I thought I would post a few photography terms. If you think of a few please feel free to post. This is to help those who don't know the meaning of these terms so that way they don't have to ask every time they post.

White Balance - A function on the camera to compensate for different colors of light being emitted by different light sources.


USB - Universal Serial Bus: a protocol for transferring data to and from digital devices. Many digital cameras and memory card readers connect to the USB port on a computer. USB card readers are typically faster than cameras or readers that connect to the serial port, but slower than those that connect via FireWire.

ISO Speed - A rating of a film's sensitivity to light. Though digital cameras don't use film, they have adopted the same rating system for describing the sensitivity of the camera's imaging sensor. Digital cameras often include a control for adjusting the ISO speed; some will adjust it automatically depending on the lighting conditions, adjusting it upwards as the available light dims. Generally, as ISO speed climbs, image quality drops


JPEG - A standard for compressing image data developed by the Joint Photographic Experts Group, hence the name JPEG. Strictly speaking, JPEG is not a file format, it's a compression method that is used within a file format, such as the EXIF-JPEG format common to digital cameras. It is referred to as a lossy format, which means some quality is lost in achieving JPEG's high compression rates. Usually, if a high-quality, low-compression JPEG setting is chosen on a digital camera, the loss of quality is not detectable to the eye.


RAW - The RAW image format is the data as it comes directly off the CCD, with no in-camera processing is performed.

File - A computer document.

Buffer - Memory in the camera that stores digital photos before they are written to the memory card.
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Last edited by Dcrymes99ranger; 11-02-2010 at 11:19 AM.
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Old 11-02-2010, 12:59 PM
stephen stephen is offline
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Default Re: Photography terms

Quote:
Originally Posted by Dcrymes99ranger View Post
File - A computer document.
lol.
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Old 11-02-2010, 02:16 PM
DieHard4rd DieHard4rd is offline
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Default Re: Photography terms

Quote:
Originally Posted by Dcrymes99ranger View Post
Well since the photography section is starting to get more active I thought I would post a few photography terms. If you think of a few please feel free to post. This is to help those who don't know the meaning of these terms so that way they don't have to ask every time they post.

White Balance - A function on the camera to compensate for different colors of light being emitted by different light sources.

Edit:
Common white balance settings are flouresant, incondesant, sun, shade. Some of the better cameras even have Kelvin white balance settings..

USB - Universal Serial Bus: a protocol for transferring data to and from digital devices. Many digital cameras and memory card readers connect to the USB port on a computer. USB card readers are typically faster than cameras or readers that connect to the serial port, but slower than those that connect via FireWire.
Edit:
Most people will find uploading your pictures to your computer via USB card reader quicker than plugging your camera into your USB port via USB cable.
ISO Speed - A rating of a film's sensitivity to light. Though digital cameras don't use film, they have adopted the same rating system for describing the sensitivity of the camera's imaging sensor. Digital cameras often include a control for adjusting the ISO speed; some will adjust it automatically depending on the lighting conditions, adjusting it upwards as the available light dims. Generally, as ISO speed climbs, image quality drops
Edit:
All digital cameras will auto set ISO automatically for you. Unless you set it manually to a desired setting. You generally want to shoot the lowest ISO that the lighting permits. Lower light requires either larger apreture, longer shutter, flash, or all 3. Generally your camera does a pretty good job set on auto.


JPEG - A standard for compressing image data developed by the Joint Photographic Experts Group, hence the name JPEG. Strictly speaking, JPEG is not a file format, it's a compression method that is used within a file format, such as the EXIF-JPEG format common to digital cameras. It is referred to as a lossy format, which means some quality is lost in achieving JPEG's high compression rates. Usually, if a high-quality, low-compression JPEG setting is chosen on a digital camera, the loss of quality is not detectable to the eye.
JPEG is a file your camera creates when it processes the photo for you. There are different size JEPG settings on most cameras. Giving you the choice of file size based on your need. Are you blowing it up into a poster or just sending it in an email?

RAW - The RAW image format is the data as it comes directly off the CCD, with no in-camera processing is performed.
Edit:
But every camera manufacturer has there own software setting what they think the sensor is reading & it captures all that info. Unlike a JPEG where some of the info is discarded
File - A computer document.

Buffer - Memory in the camera that stores digital photos before they are written to the memory card.
Edit:
It affects how many shots your camera will take on the continus setting. The speed of your memory card can help speed up the recovery/read write time to the card.
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Old 11-02-2010, 09:43 PM
PaulBennett PaulBennett is offline
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Default Re: Photography terms

JPEG or .jpg is called a lossy format because every time you uncompress it for processing and resave the file, data is lost even though you may not have changed or edited anything. Eventually you have mud. This happens because the degree of compression is variable but not contained in the file. So when the file is again saved, it doesn't know what was used to create the file the first time. Like gossip.

There are two types of JPEGs, the newer EXIF is now common type. EXIF is not a compression type but additional data kept in the file. There are EXIF viewer/readers for your browser, so when someone posts a picture in the web (or in this forum), you can right-click and learn what camera and lens and lens settings they used, the exact time and in some cases, the gps location. COOL
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