1 / 10

Digital Cameras

Digital Cameras What to look for in a Digital Camera Bryn Jones April 2001 Size of CCD A digital camera is exactly the same as a film camera except the film is replaced by a grid of charge coupled diodes. CCDs The CCD determines how many individual pixels can be recorded.

omer
Download Presentation

Digital Cameras

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Digital Cameras What to look for in a Digital Camera Bryn Jones April 2001

  2. Size of CCD • A digital camera is exactly the same as a film camera except the film is replaced by a grid of charge coupled diodes. CCDs • The CCD determines how many individual pixels can be recorded. • This limits the ultimate quality of the photograph at any given size of reproduction. • Only very expensive digital cameras come close to the quality of film. • Especially if you want to enlarge the result.

  3. How Big is Big • Basic digital cameras start at around 250,000 pixels. • They are suitable only for small photos on screen. • 1,000,000 pixels (Megapixel) is regarded as the minimum for quality print output at reasonable sizes. • Cameras have recently become available with 5 Megapixels at a consumer price (Minolta Feb 2001.) • 3.5 Megapixels is regarded as equal to a good film camera.

  4. Lens Quality • Compare the lens focal length with a film based camera. This is not easy because the CCD is about a quarter as big as film so focal lengths are one quarter but some companies use 35mm equivalents. • Compare the optical quality of the lenses. • Is a zoom facility available? • If there is a zoom facility, is it digital, optical or a combination of both? • Digital zoom is a waste of time.

  5. Storage System • Floppy Disk • Internal fixed Flash RAM • Removable Flash RAM cards • Memory Stick • Mini writeable CD

  6. Photo Transfer System • Floppy disk • Cable from camera • Flash card reader • Flash card in a floppy case • Memory Stick reader • Infra Red • Wireless is likely to become available soon!

  7. Software required • Preferably none required - camera produces JPEG format • Some cameras need special software • Is it Mac/Windows compatible? • Does it work through a Plug in to Photoshop or with stand alone software?

  8. On Camera Playback • Can you review photos on the camera? • Can you delete on the camera? • How big is the viewing area?

  9. Power Supply Options • Does it use rechargeable batteries? • Are they included? • Is the charger included? • Can the batteries charge in the camera? • What is the battery life? • Consider battery life with and without flash and LCD • Is there a mains power option?

  10. Options • Various options are available such as • Video recording • Sound recording • Multiple images one after another. • Multiple images on one photo. • Macro lens. • It depends what is useful to you.

More Related