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Tamron SP Auto Focus 2x Pro Teleconverter for Canon Mount Lenses (Model 300F)
- Enter your model number to make sure this fits.
- Increases focal length from same camera position by 2x
- Superior performance for unsurpassed image quality and ease of use
- Fits easily between lens and camera body
- Includes carry case
- For use with Canon SLR cameras
- • It is natural for the image quality to deteriorate when using a teleconverter since the lens becomes darker due to aperture loss: one F-stop (with 1.4X) or two F-stop (with 2X).
- • Depending on the shooting conditions, the Auto Focus may hunt. In that case, please use MF (manual) mode.
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|Included Components||Lens Caps, Case, 1 Year Tamron U.S.A. Warranty|
|Item Dimensions||3 x 3.2 x 3.6 inches|
|Item Weight||0.49 pounds|
|Manufacturer Warranty Description||1 year manufacturer's warranty|
|Shipping Weight||0.55 pounds|
|Style Name||For Canon Mount Lenses|
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|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||Amazon.com||Photo Savings||Amazon.com||Eternal Photo||Amazon.com||47th Street Photo.|
|Compatible Camera Mount||—||Canon EOS||Canon EF||Canon EF||Canon EF||Canon EF,Canon EF-S, Canon EF, Canon EF-S|
|Item Dimensions||3.2 x 3.6 x 3 in||2.72 x 2.05 x 2.72 in||2.83 x 1.06 x 2.83 in||3 x 3.2 x 2.8 in||4.17 x 10.16 x 4.17 in||4.1 x 18.5 x 4.1 in|
|Item Weight||7.76 ounces||0.52 lb||7.83 ounces||6.4 ounces||4.3 lbs||0.9 lb|
|Lens Type||teleconverter||Teleconverter||35mm||telephoto-zoom||Zoom lens||telephoto|
|Maximum Focal Length||—||400 millimeters||1 millimeter||300||600 millimeters||2,600 millimeters|
|Minimum Focal Length||—||70 millimeters||1 millimeter||100||150 millimeters||650 millimeters|
|Photo Filter Thread Size||—||—||—||—||95 millimeters||95 millimeters|
A Teleconverter is a great way to extend the focal length of your lens. This Teleconverter will extend the focal length of your lens by 2x giving more magnification. The Tamron Pro series Teleconverter offer superior optical construction for improved image quality.
From the Manufacturer
Simply fit a Tamron teleconverter between the lens and the camera body to increase a lens focal length, giving you extended telephoto capabilities so you can take photos with greater magnification from the same camera position. Tamron's AF teleconverters are compatible with most AF (autofocus) and autoexposure cameras.
SP for "Super Performance"
Tamron's SP-series lenses are designed to achieve top optical performance. Ground breaking design concepts give these lenses unsurpassed image quality and ease of use while setting new standards for future generations of lenses.
Top customer reviews
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First, I wanted to give everyone a heads-up. The pictured item for this product (as of today 5/13/11) is white with a black rubberized grip on it. However, recently Tamron changed the style of the teleconverter to be all black. I confirmed this with Tamron directly (you can too - 1-800-827-8880) and the rep said that as long as the teleconverter has a model number 300F on it that it's the correct "pro" 2x teleconverter as opposed to their lower-end 2x teleconverter.
As to my experience with the product, the quality and build seems great. I've always been impressed with Tamron as an alternative to pricier lens companies. I'm using it primarily with a Tamron 18-270 PZD VC lens and the extra reach is incredible (at full tele with the D90 crop factor the lens' 35mm equivalent focal length is 820mm!!). When attached to my Nikon D90 body, however, the Vibration Compensation (VC) is a little spotty. It will work MOST of the time and stabilization efficacy doesn't seem to be affected, but on occasion the VC will just no longer activate. A very quick and easy fix for it is to just semi-detach and then reattach the lens/telconverter (don't have to fully remove) and voila the VC works again -- if only for a little while. Strange issue, but not too much of a hassle.
When I contacted Tamron about the VC issue the representative informed me that it is because this teleconverter is "not compatible" with any VC lenses (at least Tamron ones), which perhaps explains the sporadic functionality. However, I usually understand "not compatible" to mean "doesn't work ever" but my experience is that the VC on my 18-270 PZD VC works just fine -- just when it's in a good mood.
Overall, I'm very happy with this teleconverter. Don't expect AF to work unless you're using it with a very fast lens because it attenuates the amount of light (basically, if your lens is a f/2.8, adding this TC makes it an f/5.6). And to my knowledge the majority of AF systems don't function well or don't function at all at apertures smaller than f/5.6 (feel free to correct me in the comments). That said, AF did work under bright conditions, so again it's not that big a deal.
In short, you get a lot of extra reach, but you have to give up AF and VC sometimes. But there's no free lunch in the world and unless you want to drop a few grand on a fast tele lens, this is a good alternative for ~$250. But realistically if you're expecting to hand-hold an 800mm lens then perhaps your expectations need some reconsideration ;)
Canon EOS 7D 18 MP CMOS Digital SLR Camera with 3-Inch LCD (Body Only)
Tamron SP 70-200MM F/2.8 DI VC USD Telephoto Zoom Lens for Canon EF Cameras
Canon EF 100mm f/2.8L IS USM Macro Lens for Canon Digital SLR Cameras
This Teleconverter works as expected. Anyone that expects it to give them the exact same image quality as a lens without a teleconverter is just dreaming.
I have used the Canon 70-200 f2.8 II with the Mark III 2X teleconverter, and it had a very similar effect on the images from that lens as this one does on my Tamron 70-200 f2.8 VC, at twice the price.
One thing I noticed is I had to "underexpose" by more than two stops to get the same exposure with the teleconverter on. I don't remember if this happened on the Canon. This kind of sucks because I have to keep changing back when I take it off the camera, and if I am in a hurry to get the shot, I might not think to change it right a way, but looking at the image preview, it's obvious the exposure is way off. This happens with any lens I use it with.
I doubt I will use this much with my Canon 100mm L Macro, but it works fine, and gives me even more then a 1:1 macro shot. In the little testing I have done, it doesn't want to focus at close distances, but that might mean it just needs more light. That's not an issue, as I use manual focus when shooting macro shots anyway. It does auto focus at normal to far distances, but it's a little slower then without the teleconverter.
Like I mentioned earlier, the image quality suffers a little with the teleconverter, but I feel it's well worth the cost to get double the mm from your lens. The images will be a little bit softer, but you will still get more detail then just cropping an image without the teleconverter. I have verified this with some of my own test photos. I will upload a photo of my dog that will show the image quality at 400mm, f5.6, 1/60 sec, ISO 400. (Or I guess I won't since they don't allow this anymore, thanks Amazon!)
I would definitely recommend this teleconverter to anyone that wants a little more reach from their lens, at this price, you can't go wrong.
Update: purchased a Nikon 70-200 2.8 and this Tamron 2x works great with this lens. Some loss of sharpness but the 2x lets me get some great football shots.