Can you find 5 things different about these pictures?
Most commercial web sites use photography extensively to highlight products, introduce employees and management, provide visuals of locations and buildings, and more. This requires that a good web designer take special care to manage and process all digital photography to assure the best possible presentation of a company's visual information on its web site.
Very good interfaces can be compromised by photos of personnel, management, products or services that are blurry, chunky, diluted of any natural color, blown out or uneven. Good web design means not ignoring the ways all the photography on site can be its most accurate and beautiful.
The photos below demonstrate a little exercise i did on a typical digital photo. 
The top photo here is the original photo from a Canon digital camera. It is a little washed out (as if the f-stop were too high), lacks clarity in details (slightly out of focus) and has a limited range of dark and light tones.
The lower photo is the result of taking several steps which, when executed in the right order, bring out the photo's beautiful colors and details. Note that the skin tones are more natural and practically possess that 'real life' glow; clothing colors have been adjusted to better match the original colors and saturation has been slightly reduced; all detail has been brought into clearer focus; and the range of light and dark tones has been greatly expanded. The result is an image you could almost reach out and touch.
This kind of digital processing of photography should be an expectation every client has of their web designer. It can make the differencee between a positive or negative impression of a product by a prospective customer or even effectively conceal the worry lines on your CEO's face. In any case, good photography is good information. It creates a human connection to the viewer that untreated snapshots simply can't.