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Digital photography just the steps for dummies - Jones F.

Jones F. Digital photography just the steps for dummies - Wiley publishing , 2005. - 240 p.
ISBN: 0-7645-7477-9
Download (direct link): digitalphotographyjust2005.pdf
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Figure 1-16: Loading batteries into a camera with AA batteries
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term LinG - Live, informative, Non-cost and Genuine !
03870235
Chapter 1: Selecting a Camera and Accessories
Evaluate Supported Output Formats
Format Compression Comments
JPEG Lossy This file format is the most common. It's universally recognized. You can select the amount of compression and subsequent quality or loss of quality in the camera or in the computer.
TIFF Lossless TIFF is a standard photo or digital publishing format. It can be somewhat compressed but in order to lose no quality, the amount of compression is limited. This is a good finished file format and retains high image quality. You can select to shoot TIFF photos with many cameras.
CCD RAW Lossless You can set the more expensive prosumer and professional cameras to save the data directly from the CCD chip in the camera. This saves a huge amount of image information and is used by professional photographers and graphic artists to gain maximum image quality and flexibility. It's a very large file and severely limits the number of images that can be stored on common memory cards.
When a lossless compression image is uncompressed, its quality matches the original source. Lossy compression degrades images to some degree, and more compression equals more image loss. Use the least compression you can for the original image. You can always compress it more with editing software.
Figure 1-17: A JPEG stored without compression
Figure 1-18: The same shot with high compression
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Review Image Statistics
Review Image Statistics
Image Type
Image Size File Size
Print
Size
# on # on
32MB Card 1GB Card
RAW 2272x1704 3.3MB 11x8.5 10 359
TIFF 2272x1704 3.3MB 11x8.5 10 359
Super Fine JPEG 2272x1704 2.2MB 11x8.5 14 512
Fine JPEG 2272x1704 1.4MB 11x8.5 27 910
Normal JPEG 2272x1704 .76MB 11x8.5 54 1726
Fine JPEG 1600x1200 .76MB 8x6 54 1726
Fine JPEG 1024x768 .28MB 5x4 94 2981
Fine JPEG 640x480 .12MB 3x2.5 196 5466
Figure 1-19: Choose a low resolution, such as 640x480 if you only want to e-mail your photo
Use this table to determine the amount of memory required to store images of various sizes. You can easily plan memory needs for a vacation or photo shoot.
Figure 1-20: Choose a high-resolution setting with no (or low) compression for photos that you want to print and frame
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Chapter 1: Selecting a Camera and Accessories
Evaluate Camera Functions
Function (Mode) How to Use It Comments
Automatic Both aperture and shutter speed are set automatically.
Exposure Compensation A dial or control that allows you to increase or decrease the exposure one or two stops. This is used to lighten or darken an image.
Shutter Priority The shutter speed is set manually and the camera automatically sets the aperture. Good for sports shots.
Aperture priority The aperture is set manually and the camera automatically sets the shutter speed. Good to control the depth of field in close-up shots.
Burst mode Shoots a "burst" or group of photos rapidly and automatically. Good when you need to take several shot to assure one is good as in a wedding or sport events.
Time-lapse mode Sets the camera to automatically shoot an image at a set interval. Good for nature photos.
Video mode Allows the recording of short limited resolution video clips.
Manual Allows you to set all the controls manually.
Figure 1-21: Exposure compensation can clean up overexposed photos like this
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Figure 1-22: Aperture priority allows you to shorten depth of field in a close up
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Evaluate Camera Functions
Function (Mode) How to Use It Comments
Fixed Focus Simple camera lenses that can't be manually or automatically focused. Found only in inexpensive and disposable cameras.
Automatic Focus The camera adjusts the focus automatically. Better cameras allow you to turn off this feature to allow manual focus.
Manual Focus You manually focus the camera. Good for busy pictures and patient photographers.
Focus & Exposure Lock The camera automatically sets the focus and exposure when you hold down the shutter button while pointing to the subject.
White Balance The camera adjusts the image to compensate for differences in light. Maintains color accuracy in daylight, fluorescent, and incandescent lighting situations.
Sport Automatically presets the camera for sports photos.
Portrait Automatically presets the camera for portraits.
Landscape Automatically presets the camera for landscape shots.
Choosing a camera is always a compromise. Choose the feature set that addresses most of your needs or those you anticipate.
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Figure 1-23: Shutter priority allows you to stop the action
Figure 1-24: Manual focus enables you to focus on something not in the
center of the picture 77
Non-cost and Genuine !
Chapter 1: Selecting a Camera and Accessories
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