The Digital Photography Companion

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ZOOM LENSES

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Wi-Fi technology has been around for some time and is typically used to enable Inter-

net connectivity in coffee shops, airports, and businesses that have hotspot capability.

Soon, sending pictures from your camera might be as easy as sending email from your

computer. Kodak and others have already produced consumer cameras with this tech-

nology built in, and more are sure to follow.

Wi-Fi Transmitter

Some cameras are offering 802.11 wireless connectivity to other devices, such as the

computer, or to services on the Internet. e Nikon Coolpix S51c, for example, allows

you to transfer your pictures via Wi-Fi hotspots (locations where wireless networks

are available) to online resources such as Flickr’s photo-sharing service. Apple’s iPhone

enables you to attach its pictures and send them via email using Wi-Fi or its cellular

network.

e bottom line is that Wi-Fi connectivity frees users from cables and card readers con-

nected to computers, and allows transfer of photos from hotspots all over the world.

Zoom Lenses

Camera makers tend to list two sets of numbers on the barrel of the lens, or on the body

near it. e first set is usually followed by “mm” (which stands for millimeter) and looks

something like this:

5.4–10.8mm or 7–21mm

ese numbers represent the zooming range of your lens. Many consumer digital cam-

eras have a zooming range ...