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Shopping > Cameras > Camera Lenses & Filters > Camera Lens Accessories > Tamron > Tamron AF20PN-700 Converter

Tamron AF20PN-700 Converter

Tamron AF20PN-700 Converter
$254.00
5 out of 5stars 1 Rating (0 Reviews)

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Product Description: Tamron AF20PN-700 Converter

The SP AF PRO-series teleconverters, with the optical construction (4-group/5-element for 1.4X and 4-group/7-element for 2X), are designed to be used with lenses that are F/2.8 and of focal lengths of 90mm or greater. This would make the use of the SP teleconverters ideal for the Tamron SP90mm F/2.8 macro, 70-210mm F/2.8 and 300mm F/2.8. Relative illumination is...
The SP AF PRO-series teleconverters, with the optical construction (4-group/5-element for 1.4X and 4-group/7-element for 2X), are designed to be used with lenses that are F/2.8 and of focal lengths of 90mm or greater. This would make the use of the SP teleconverters ideal for the Tamron SP90mm F/2.8 macro, 70-210mm F/2.8 and 300mm F/2.8. Relative illumination is significantly improved resulting in better overall contrast and resolution across the entire image field. In addition, chromatic aberration and astigmatism are better compensated for by virtue of the use of higher-grade glass materials and more sophisticated design techniques than used in universal-type teleconverters. When used with lenses with smaller maximum apertures (F/4 and F/5.6, for example), there will be little difference in image quality as compared with the standard Tamron teleconverters. When used with lenses wider than 90mm, the SP teleconverters can actually comprise image quality.
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Product Specification: Tamron AF20PN-700 Converter

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The 2x teleconverter (also known as a tele extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a ...

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