Instead, look for zooms
with controls that turn around the lens barrel. It should be smooth and easy, not hard and
jerky. Another consideration: some zooms have a completely internal mechanism, so the
lens does not change size as you zoom. Other lenses get longer or shorter as you zoom.
?– Image stabilization Nikon calls its image stabilized lenses ???VR.??? Canon uses the term
???IS.??? Either way, these lenses contain small gyroscopes and motors that minimize the sort
of blur caused by handholding a lens. Image stabilization can be found on many telephoto
lenses, and manufacturers claim that using a stabilized lens allows you to shoot pictures
as much as three stops slower than you normally could without blurring your photo. Now,
don??™t get me wrong: you should use a tripod for the best results, but image stabilization
really does work well and is nothing short of astonishing. If you can afford to get an IS
or VR lens, definitely go for it. As you can see in the following illustration, most image
stabilized lenses have a control on the lens that lets you turn the effect on or off.
CHAPTER 2: Work with Digital SLRs 33
Care for Your D-SLR
Everything gets dusty and dirty. I know this to be one of the fundamental, immutable laws of
physics because I own a house, and every once in a while I look in places I shouldn??™t.
Pages:
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83