Mark Bauer tests Tamron’s all-in-one superzoom
Guide price: £660 / Street price: £499
Construction: 16 elements in 13 groups
Maximum aperture: f/3.5-6.3
Minimum aperture: f/22-40
Filter thread: 62mm
Angle of view: 75º – 6º
No. of diaphragm blades: 7
Minimum focus: 0.49m
Maximum magnification ratio: 1:3.8
Dimensions: 74.4×96.4mm
Weight: 450g
Supplied accessories: Lens hood
Photography, like life, is full of compromises. For an optimal image quality, you Aod have a bag full of fast aperture prime lenses, from wide angle to telephoto. However, not only you feel the weight of this lot laying around all day, you, Ehud probably sick of changing lenses while trying different framing options. And inevitably, at some point, you Aod found that the best composition is somewhere between two focal lengths.
For this reason, most photographers compromise a bit on image quality and settle for the convenience of having a small selection of zooms. Of course, the most practical thing of all is to have a single zoom lens that covers all the bases, which is exactly what Tamron have tried to do with their 18-270mm f/3.5-6.3 VC DIII PZD, to give it its full title. She, OSA designed for use with crop (APS-C) sensor DSLR, which means it has a range of equivalent focal length of about 28 to 400mm; enough for most everyday situations.
To maintain image quality with, Äòsuperzoom, AO like this is a challenge, given the complex nature of the optical design. The general rule is, the higher the zoom, the higher the image quality, and the Tamron has a zoom ratio of 15x massive. So the big question is: is it up?
For a lens with such a wide zoom range, the Tamron is proving to be remarkably compact and lightweight. Despite this, it feels pretty solid and performs well, with smooth zoom action and a good size manual focus ring. Manual focus accurately is a bit difficult, however, that only takes you a little tour of the minimum focus distance of 0.49m to infinity. However, the autofocus performance is much more important because that is how most photographers want to use this lens. , Â ® as a landscape photographer, I do, AOT normally use auto focus that often, but for this test, I found that last Tamron AF system, the piezo (PZD) ultrasonic motor, concentrated in confidence accurately and in silence and was only slightly slower than my Canon L-lenses.
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