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Digital Camera Settings

Digital Camera Settings. Digital Sensor (CCD). The heart of digital camera technology lies in the invention of the image sensor. Image sensor records the pattern of light, which is then translated into a stream of numerical digital information. This sensor is called a CCD.

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Digital Camera Settings

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  1. Digital Camera Settings

  2. Digital Sensor (CCD) • The heart of digital camera technology lies in the invention of the image sensor. • Image sensor records the pattern of light, which is then translated into a stream of numerical digital information. This sensor is called a CCD. • The CCD (charge-coupled device), records the light. The CCD sensor captures an image in black and white and then passes it through red, green, and blue filters organized in a matrix to forma a color image. The camera software then translates this digital information to form as pixels on the camera and computer monitor.

  3. Pixel Image • Pixel is short for “picture element”. Pixels create an image which is comprised of dots of color mixed optically to form smooth and even tones. The more pixels in an image file, the more detail there will be in your photograph and the bigger the print can be.

  4. Resolutions & Pixels • The pixel count determines the resolution of the image, which will add up to millions of pixels called megapixels. • How many pixels do you need? The answer depends on the print quality and size(output) you want. • If you want to print large images at high-quality resolution, you need at least 150, ideally 300 pixels per inch (ppi). To print a 6x8 image at 300 ppi adds up to 6x8x300x300 pixels per inch=4,300,000, which is 4 million pixels or 4 megabytes.

  5. File size in Camera • You can save your images at different levels of definition. The more definition, the more memory an image will require. • The camera uses a compression system called JPEG, which compresses the information to take up less memory. • High picture definition = Super fine • Extra fine, fine, and standard settings compress information in increasing amounts. As you increase the compression, you have corresponding loss of detail. • Selecting image quality is a matter of balancing how many pictures you want to take with how much memory you have and which images you want to have maximum definition.

  6. Different File Formats • JPEG • GIF • TIFF • RAW

  7. GIF • Not best way to save photos. • Limited in how many colors it captures • Better to flat color graphics like cartoons and drawings.

  8. JPEG (Joint Photographic Experts Group) • Displays all the color gradations in photographs. • Most popular image file format, universal format whether using in an email or on the web. • Lets you save big images files in a compact space • Problem of compression: • Information not visible to the human eye gets discarded in order make room to store more images on your memory card • The more you compress a JPEG, as in Photoshop, the more defects (or artifacts) will compromise the quality of your photo. "JPEG image artifacts" refers to the unwanted blocks, dots, and fringes in JPEG-compressed images

  9. TIFF (Tagged Image File Format) • Stores image in a high-quality file • Good choice if you have a lot of space on a memory card and you want the highest quality possible when you printing the image • TIFF format captures image without the compression problem of JPEG • Produce better color and detail • Problems: take up a lot of space

  10. JPEG vs. RAW format RAW JPEG

  11. RAW • Term describes the file format that your camera uses • Captures a pure file without any image processing within the camera. • Offers a lot of flexibility when adjusting images in photo software programs • Rather then the camera decided upon capture the color, brightness, white balance etc, you can decide that for yourself once you upload a RAW format into Photoshop • You get full control over the details of the image • Produces large, high quality images. • Requires special software to open the file (Photoshop) • Slow transfer time from camera to the computer • More time-consuming and difficult if you are not a Photoshop Pro. • Takes up more space on a memory card than JPEG

  12. Any Questions?

  13. For Tomorrow • Bring your Camera and its’ Manual to class. • If you don’t have the manual, you can download it from home through Google and bring it with you. • If you don’t have a camera, you will use the school’s camera and manual. • We will be exploring the settings and capabilities of your camera in class.

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