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Digital Photography

 

This section covers the basics of what to look for in a Digital Camera, as well as providing resources on digital photography, and simple techniques that will greatly enhance your photographs/images.


Gerry's Digital Camera Handout Fall 2010 (pdf, 428k) : Contains information outlining many basic camera features, features for creativity, storage options, and other camera extras. *** UPDATED FOR Fall 2010! ***

 

Digital Still Cameras:

Digital Cameras

Interested in buying or using a digital still camera?  If so, read on as we cover several key points to keep in mind when working with Digital Photography:

    • Know your camera basics
    • Resolution shows detail!
    • What are the best formats to work with? 

 

 

"A picture is worth a thousand words." This quote goes a long way but not if you take a terrible photo. Learning just a few of your digital camera features can help in achieving powerful and meaningful photos.

Let's start with understanding some of the "basics" about your digital camera.  A digital camera is essentially a computer packed with a bunch of features. Start by reading your camera manual and try using some of the various menu features. Still, Playback, Movie, White Balance, Digital Zoom, etc.. Practice and play around with them.

Next, let's look at what I call the "Camera Basics" for better photography:

    • Composition
    • Resolution
    • File Formats

 

Composition

Composition

Defined as the canvas for photography, composition can distinguish between good and average photos. There is much written on composition but to be brief, use your view finder to frame your image. Move as close to your subject as possible and crop-off any unneeded material.

 

Resolution Resolution
Resolution affects the amount of discernible fine detail
in an image.  A low resolution image looks coarse.  A high resolution image looks smooth.  It is like comparing burlap to silk.

Cameras are described in megapixels. This is the amount of digital information that a camera can display. More megapixels will yield finer details and give you larger and better quality photographic printouts.

 

File Formats File Formats
There are two most common digital photography formats-TIFF (tif file extension), and JPEG (jpg). 

TIFF or TIF
TIF is a good format for preserving image detail when taking photographs and editing. It is widely supported by image editing software.  TIF is typically a non-compressed file format that means the files can be very large in file size. It can also use something called LZW lossless compression that can reduce the size of the image file without loss of detail information. Regrettably, not all digital cameras support this uncompressed format. TIF can be found on most higher-end digital cameras (i.e. Nikon Coolpix 4500 and 5700).

JPEG or JPG (pronounced "Jay-Peg")
The JPEG format is the king of compression.  JPG is the most common format for viewing images on the Web. JPEG images are small for fast delivery over the Web and are also the most common format saved in Digital Cameras . To make files smaller to fit on small storage media, compression is used. A word of caution, don't save JPG's over and over because the images get compressed over each other and loses significant amounts of image detail and information every time it is saved. JPEG uses lossy compression with a trade offs between file size and image quality.  

Avoid opening and saving a JPEG file multiple times since a JPEG file loses some quality each time.  It is a bit like making a video tape copy from a copy.  Every generation is of lower quality.  If you will be editing an image, don't save your master or archive as JPEG.  If you need to edit an image, save the intermediate image as TIFF.  If you want a master copy, keep it in TIFF and you can always save a JPEG file later for email or for placing on a web page.

More information on Web Formats:
 
W3 standards

 

Links to other Digital Camera Resources:

ZDNet Digital Camera Review  

Digital Photo Shortcourses 

Steve's Digicams

Digital Camera HQ

School of Photography.com

Digital Photography Review   

Kodak Digital Learning Center

BetterPhoto.Com   

Megapixel.Net