photo:tamron15-30mm
Tamron SP 15-30mm f/2.8 lens
Introduction
Specs
15-30mm field of view
18 elements in 13 groups, including 3 LD elements as well a 3 molded glass elements (includes a 'XGM' element ('eXpanded Glass Molded Aspherical') )
plastic with metal mount
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9 blades
close focus 0.28m
anti-dust/water-repellent coating on front element
moisture-resistant construction
no filter thread
98.4x145mm
1.1kg
Reviews
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3.4% barrel distortion at 15mm, almost nil at 21mm then 1.2% pincushion by 30mm
1.5EV vignetting at 15mm reducing to 0.9EV at 30mm
softish edges and corners wide open
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well controlled lat CA avg 1px
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photo/tamron15-30mm.txt · Last modified: 2017/10/14 12:13 by gary1