Tamron SP Autofocus 1.4x Pro Teleconverter Lens for Nikon DSLR Cameras

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Brand: Tamron
Category: Photography

List Price: ~~$297.95~~
Buy New: $183.10
You Save: $114.85 (39%)

New (5) Used (1) from $169.99

Rating: 2.5 out of 5 stars

2 reviews

Color: White
Media: Electronics
Shipping Weight (lbs): 0.5
Dimensions (in): 3.1 x 2.9 x 2.7

MPN: AF14PN-700
Model: AF14PN-700
UPC: 725211147138
EAN: 0725211147138
ASIN: B0000ZJDVM

Availability: Usually ships in 1-2 business days

Features:

•	Increases focal length from same camera position by 1.4x
•	Superior performance for unsurpassed image quality and ease of use
•	Fits easily between lens and camera body
•	Includes carry case
•	For use with Nikon Digital SLR cameras

Accessories:

•	Adorama Deluxe 5 Piece Lens Cleaning Kit
•	Adorama Professional Lens Cleaning Kit

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Editorial Reviews:

Product Description
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.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, this 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.

Customer Reviews:

4 out of 5 stars

works well for what it does November 18, 2008
P. Shepard (ARKANSAS)
2 out of 2 found this review helpful

I have been shopping for a fast (large apperature=small number) longer lens than a nikon 80-200mm f/2.8D that I use. I have a longer sigma lens, but it has a slower apperature (f/5.6-6.3). Fast lenses are quite expensive, so I looked at other approaches & arrived at teleconverters to extend the length of my 80-200mm lens. I read a lot online (the above review was not helpful, no offense) prior to deciding to give this tamron SP pro 1.4X TC a trial.
First off, I found it used at a reputable on-line camera outlet for about $50 less than the $180-$190 retail price as of late 2008.
Basically, it works OK -- Using a D-300, I've tried it with the 80-200mm f/2.8 (which turns it into roughly a 112-300mm f/4 lens) and the autofocus is still very quick. The quality of hte photo appears about normal (a steady tripod would probably be very helpful; i was using a monopod).
Though not recommended for lenses "slower" (larger number) than f/2.8, I tried w/ a Nikon 70-300mm, f/4.5-5.6, AF-S VR lens and was pleasantly surprised that it took decent photos --it focused OK, the VR seemed to remain operational, and the quality was OK-- as long as there was sufficient light. I did note the lens hunting for focus more in low light, but i was able to manually focus when necessary. Finally I tried the TC on an old manual focus Nikon 100mm f/2.5 lens (adapted for use w/ current Nikon DSLRs) and liked the quality, but need to further try this combo to better discuss.
Some considerations: the 1.4x multiplication of focal length comes at the expense of one stop (e.g. f/2.8 becomes f/4-- not as quick). Also, the EXIF data (camera metadata) reports the f-stop and focal length as if the teleconverter wasn't there-- at least on the lenses i tried the TC with. So, when looking via view finder, I still saw "f/2.8", though I knew in reality that meant "f/4"-- a little confusing.
Anyway, I think the TC will be a helpfult tool, as i learn to use it more.
Just wanted to add somehting to the discussion that might be helpful to you as you ponder how to "stretch" your photography "wants" in light of your real-life budget... Take care.
Pablo

1 out of 5 stars

Tele Converter for Nikon D80 April 12, 2008
Linda Hamp
0 out of 3 found this review helpful

I wasn't very impressed with this for my Nikon D80 SLR. It was my understanding from the website this would work with digital cameras, but the literature received with the lens indicated this is not the case. My photos with this were a bit fuzzy. Not satisfactory at all and I returned it.