Tamron Teleconverters for Autofocus Cameras
TAMRON AF 1.4X Teleconverter
Features:
- Increases the focal length of the master lens by 1.4X, while making the lens one f-stop slower
- Allows greater magnification in macro since Minimum Object Distance of the master lens does not change when used with teleconverters
The 1.4X teleconverter will increase the focal length of the master lens by 1.4X and make the lens one f-stop slower. In addition to increasing focal length, The teleconverter allows greater magnification in macro since the Minimum Object Distance (MOD) of the master lens does not change when used with the teleconverters. The 1.4X teleconverter can be used with both AF and MF lenses. AF will be retained if the master lens is F/4.5 or faster.
| Construction | 4 Groups/ 4 Elements |
| Dimensions (Length x Diameter) | 0.7in. (18.8mm) x 2.6in. (66.5mm) |
Tamron Autofocus 2x Teleconverter
Features:
- Increases focal length from same camera position by 2x
- Powerful and creative options for your telephoto photography
- Fits easily between lens and camera body
The 2X doubles the focal length of the master lens and makes the lens two f-stops slower. In addition to increasing focal length, this teleconverter also allows greater magnification in macro photography. AF will be retained with the 2X teleconverter if the master lens is F/4.0 or faster.
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Tamron SP AF PRO Teleconverters
Teleconverters, either 1.4X or 2X, are efficient
tools to add focal length to the photographer's
arsenal. However, universal-type teleconverters have
certain limitations in performance when used with
ultra-telephoto lenses of 200mm or longer as
compensation of chromatic aberration alone becomes
highly critical in this focal length range. The new
PRO-series Tamron teleconverters are specifically
designed and optimized for use with such
ultra-telephoto lenses to deliver maximum
resolution, contrast and color rendition without
degrading any aspect of the master lens performance.
The SP AF PRO-series teleconverters, with a newly
designed 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.
Tamron SP AF1.4X PRO Teleconverter
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Tamron SP AF 2X Teleconverter
| Construction | 7 Groups/ 4 Elements |
| Dimensions (Length x Diameter) | 43.5mm x 66.2mm |
| Weight | 189g |
| Construction | 7 Groups/ 4 Elements |
| Dimensions (Length x Diameter) | 43.5mm x 66.2mm |
| Weight | 189g |