Customer Reviews:
 a little heavy for its size but works just great! April 28, 2008
2 out of 2 found this review helpful
It comes with a little bag to store it in the gadget bag and as I said its a little heavy for its little size, yet it doesnt become a burden to carry at all. I am using it with a 70-200 f4L IS and the size of the combined lens looks quite long on a rebel XTi and of course draws attention to it. I dont notice any quaility decrease (on the pictures) when used with this lens, but anyway, im not using any lab equipment or pixel picking to really test that. The build feels solid and it fixes well to the other lens as if it becomes a part of it, I think thats what the intention is of course. The color of this extender is exactly the same as the 70-200 f4L IS which is not white but rather grayish, they both look beautiful together !
I highly recommend it since it does make quite a difference and overall it is a professional and very well developed pice of equipment. Im actually thinking on also having the 2x later on to achieve the 640mm with my 70-200L and a small sensor such as the XTi or the 40D.
Does exactly what it says March 26, 2008
1 out of 1 found this review helpful
I only pair it with the Canon EF 70-200mm f/4L USM Telephoto Zoom Lens for Canon SLR Cameras and my Canon Digital Rebel XTi 10.1MP Digital SLR Camera (Black Body Only) at this point, but it has done wonderfully. Yes, it does cost me a stop of light (just due to the math on it), but I can't really see any quality difference between with and without. I also have the ability NOT to use it when I don't need it, which means I get a better lens at the short end of the range than I would have just getting a longer lens. I'm definitely looking forward to having other lenses to pair this with.
Does what it is supposed to February 28, 2008
1 out of 1 found this review helpful
The 1.4X II teleconverter is a great addition if you are using 'L' lenses. Like others have said it takes my 70-200 f2.8 to f4 but is that a big deal?...NO...yes it makes 'some' shots a little softer but is that a big deal?...NO..play with the sharpness adjustments in your camera and you will see differences in the same shot as far as softness goes. it gives that "extra reach" at a very reasonable price. Now if you are a pixel nazi then you will obviously write pages & pages of the technical junk listing the limitations of this piece of equipment but for the rest of us that love shooting and not expecting each and every shot to be an excercise in perfection...we buy it and love it..
 Work as designed February 16, 2008
0 out of 5 found this review helpful
Good product. I knew already (obvious) it would turn my 70-200 f/4 into a 98-280 f/5.6, but I was not sure what the effects would really be when I bought it.
The product is well constructed and have very good optics. I would definitively recommend.
The only reason I dont give 5 start is because I think Canon should improve documentation on their website, explaining better the effects of the extender (reducing speed in 1 f-stop).
Great, cost-effective accessory...a must-have December 28, 2007
1 out of 2 found this review helpful
Super product, providing a little extra reach at a fraction of the price of a 400mm L lens. My only criticism, initially, was that it produced images a little softer than those coming from a naked 70-200 4L. However, I compensated by boosting in-camera (Rebel XT) sharpening to the highest level, and the results are excellent. The 1.4x should be in every photographer's bag.
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