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Tamron
SP 28-75mm f/2.8 XR Di AF zoom lens
by Paul Fisher
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SPECIFICATIONS
Being a mid-range
f/2.8 zoom lens, the Tamron may be compared with the famous Nikkors
35-70mm f/2.8D and 28-70mm f/2.8D AF-S. In fact it is almost exactly the same size, though a little lighter than the 35-70 Nikkor. However its pricing is more in the range of Nikon's top "consumer zoom" the 28-105mm
f/3.5-4.5
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Tamron
SP 28-75mm f/2.8 XR Di AF
Lens for Nikon AF-D
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Below the dimensions of each of these lenses, including the current retail price in
both Australia
and the US (at B&H) as of December 2003.
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Tamron 28-75
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Nikkor 28-105
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Nikkor 35-70
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Nikkor 28-70
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Elements / groups
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16
/ 14
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16 / 12
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15
/ 12
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15 / 11
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Length mm
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92
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81.5
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94.5
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121.5
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Diameter mm
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73
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73
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71.5
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88.5
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Weight g
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510
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455
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665
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935
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Filter size mm
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67
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62
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62
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77
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Minimum focus m
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0.33
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0.50
0.22 (macro)
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0.60
0.28 (macro)
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0.70
0.50 (macro)
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Retail price AU$
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TBA ~$600
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$800
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$1,600
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$3,375
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price US$ (USA)
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$320
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$325
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$685
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$1,430
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| Price
US$ (Imported)
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$320
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$300
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$570
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$1,340
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Apparently
this Di (Digitally Integrated Design) is currently one of the
most compact and lightest of fast zoom lenses. Its compactness
makes it look and feel like an ordinary standard zoom lens, yet
providing the versatility that a fast constant maximum aperture
offers.
LD
(Low Dispersion) glass elements and Internal Focusing may very
well place this lens in the same category of professional lenses
as well as bigger and more expensive Tamron lenses.
LD
glass elements are there to reduce various aberrations while
minimizing the fall-off of light at the corners. It also features
XR (extra refractive index) glass and efficient use of
aspherical lenses.
Most
interesting lens to say the least.
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