Additional information:
The Tamron SP AF 90 mm f/ 2.8 Di Macro
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diagonal angle of view 27° - 02'
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diagonal angle of view 17° 37' for APS-C 1.55x
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equivalent focal length on APS-C cameras 135/144 mm
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angle of the focusing ring rotation approx. 180°
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max. magnification 1:1
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diameter 71.5 mm
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hood included
The Tamron SP AF 90 mm F/ 2.8 Di Macro is a full-format macro lens. Launched in 1979, the lens has revived with Di (Digitally Integrated Design) designation, i.e. optimization of optical coating for full-format digital cameras (minimization of unwanted flare and ghosting caused by rereflections). Besides, the lens can be easily used both on digital and film SLR cameras. The focal length of 90 mm makes the lens suitable for portrait photography.
There is an AF/MF one-touch switch. Switching from autofocus to manual focusing is done by moving the focus ring back to the camera, in so doing the focus ring discloses the blue ring indicating that AF is off. When switching, focusing may slightly shift.
The Tamron SP AF 90 mm f/ 2.8 Di Macro features a Full / Limit autofocus range limiter. In Limit mode autofocus covers the range from 43 cm, in Full mode - from 29 cm to infinity. In Limit mode the front part extends as much as 1/3, which makes AF operations faster in non-macro mode.
The Tamron SP AF 90 mm F/ 2.8 Di Macro pros:
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Excellent resolution at the center and borders at any aperture setting
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Negligible distortion
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Insignificant coma
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Slight astigmatism
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Slight vignetting
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Accurate autofocus
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It is the lightest lens among analogous lenses
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Compact (at infinity)
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Inexpensive (as compared to analogous lenses)
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Perfectly suitable for portrait photography
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Satisfactory bokeh
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Recessed front element hood can partly replace the hood
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The front element does not rotate
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Durable lens body
The Tamron SP AF 90 mm F/ 2.8 Di Macro cons:
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Image softness at f/2.8 ( suitable for portraiture)
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No image stabilizer
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No internal focusing - the barrel extends significantly, as much as 50%, when focusing at its minimum focusing distance
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Slow and noisy autofocusing
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AF/MF switch
Evaluation of Tamron designations:
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SP - super performance
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AF - autofocus
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Di (Digitally integrated) - optimized for full-format digital cameras
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Macro - macrography with a max. magnification ratio of 1:1
The 5-year warranty extends to all Tamron lenses officially imported to the Russian Federation and purchased after September 1, 2010. In order to get warranty you should get registered at the Tamron European website within two months after the lens purchase. The warranty is valid only for the first registered buyer.
Links to online resources:
Posted by: dv Date of publication: 17.10.2010
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