I have the 2x converter but found this to be a bit soft and certainly slow on autofocus with both my 100-400 and 70-200f2.8 lenses. A fellow enthusiast told me to try this converter and I am so...
I compared this extender on my Canon EF 70-200 USM F/2.8L IS to the new Canon EF 70-300mm F/4-5.6 USM IS lens. For sharpness wide open, the 70-300mm has the edge, but when stopped down to F8, the...
I use the Canon 1.4x TC with both a 70-200 f4L and a 200mm f2.8L with a 20D. The body is aware of the TC and automatically adjusts the aperture displays upwards by 1 stop. EXIF data correctly...
This extender is limited to which lenses it will work with, most of them L lenses. Using this extender with any lens will eliminate one f stop and decrease sharpness. Auto-focus is possible on any...
I've had this product for only 3 weeks. It has been used on two occasions to test its viability with my system, a Canon EOS 40D. I've used the teleconvertor with a 70-200 L Series Canon lens....
I bought these to shoot close ups of wedding rings on the day of the event, where the best man usually gives you like 2 minutes to shoot. They work great. Quick to set up with almost no learning...
The reason why I bought this item is my tele-converterter (by Kenko) was out of order. Comparing the picture with the previous one, I could not find remarkable difference in the picture and the AF...
If you need an extremely high quality product, this is the one for you...I can't imagine that the canon version would be any better...Images are clear and sharp, just as sharp as the lens without...
I am a professional that uses Canon L lens only and was using Canon Teleconverters both 14x and 2x that I use extensively without a Problem. But, I have decided to go with the Tamron SP Autofocus...
The lens is very good, however, no place in the ads did it mention that this lens was not intended for use with digital cameras. I discovered that the auto focus did not work at all well, but it...
It was easy to install this into my new 50D just by following the included directions and using a little care. I tried to be forceful enough to get it to "snap" into place, while not hitting...
The instructions and the Canon video I viewed made this look like a super easy install which it should be. Following the instructions to the letter, the orginal screen didn't want to drop down in...
It's been nearly two years since I reviewed the Canon EOS 30D , and in that time the market for mid-range semi-professional digital SLRs has become a lot more crowded. While Canon is still the...
Interestingly, the price has crept up a bit on this lens in the last few months. It's value must be becoming more apparent to more folks. Nice to have bought before it went up instead of vice...
This lens was purchased for use with the XTI. For me this replaced a 300mm F2.8 FD on an F1. The detachable lens shade is frail and bulky and therefore of little use to me (the discontinued Type...
This is the second time I have purchased this lens. I sold the first one when I was short of cash, but replaced it at he first opportunity. I use it for live concerts, from the audience it works...
It's white. It's metal. It's glass. Some electronic stuff in there, too. It is incredible how humans can make these things. Amazing technology. Great stuff. If you can afford it, you know enough...
I own the 70-200mm 2.8 IS and didn't have enough reach for birds so I bought the 300mm f4 IS and used it with the 1.4x. I found the images very sharp, but the noise of the IS kicking in is quite...
I've just finished processing my first set of pics from this lens and I'm very pleased. For me the weight/size is near perfect - heavy enough for the mass to give a bit of stability, but not bad...
I have owned 2 of these lenses. Both were excellent. The selling features were weight, size and general portability. While you do give up some degree of perceived sharpness (relative to the...
There are only a few reasons to buy this lens: 1. You won the lottery and want to own every lens Canon makes 2. You need a light weight long prime 3. You must have a 400mm prime with IS. The...
Canon's breakthrough multi-layer diffractive optical lens technology provides photographers with superior super-telephoto performance in a smaller and lighter design with enhanced correction for...
I have been into photography for many many year, and have always had a spot for macro pictures. I have used other macro lenses before, but nothing compares to this. It is a speciallity lens, and it...
I made the mistake of purchasing this lens about two years ago. It is expensive for what you get, which is a bare-bones macro lens. There is no auto focus and the depth of field is microscopic,...
Nice lens, sharp pictures. When used with a tripod and focusing rail can get very sharp pictures. Very little depth of field and must use in a control environment. any breezes or movement of...
It's hard to find as long a lens at a comparable price, but there is a "you get what you pay for" factor. Of all of my Canon lenses (I have seven), this is the softest and offers the least...
At first I thought the lens was a real dog, I thought I was getting focusing problems as the lens was not nearly as sharp as my 300. Then I tried locking the mirror up on my 1DS and using a...
I am a sharpness freak. Switching from 6x7cm film to Digital, I am always on the lookout for the sharpest lenses. This is a GEM! If your not used to Pro lenses this will seem big, heavy etc....
Known as one of the best lens in Canon's produce line, this superb lens outperforms all its competitors. I am simply blown away by its sharpness and bokeh. Previously I used a Canon EF 85mm f/1.8...
I purchased this along with the 100-400 IS USM canon telephoto lens thinking it was going to be a solid package for a lot of my needs. I do a lot of sports photography and noticed that even...
I wanted a professional quality zoom lens that would not only be suitable for wildlife but also general telephoto purposes. I opted for the Canon 70-200 f2.8L IS USM instead of the 100-400 f5.6L....
Great extender for a little amount of money. Works very well with my 70-200 f/4L, and the autofocus was in low light much faster than I could imagine.... it really seemed that the combo was...
This lens works exactly as advertised. In good sunlight, fstop 9-14 works decent for things that do not move fast and produce much sharper images than i expected and at shutter speeds from...
Sigma APO Teleconverter 1.4x EX DG for Canon Digital SLR Cameras
I did a lot of research on this item before I bought it. Nowhere did I read a bad review or rating and most buyers raved about how their pics remained sharp as a tack with the Sigma 120-300 mm f2.8...
Great match-up with the Sigma 70-200, f2.8 that gives you a 100-300, f4 zoom
Optically outstanding when combined with the Sigma 70-200 f2.8 EX DG. This new Sigma EX DG lens and converter is super sharp and great color that stacks up to the famed Canon L series at about 60%...
I picked up this lens along with a 40D for my wife. I did research for months and talked to every one I knew about what lens to buy. I finally settled on the 24-70 2.8L mainly because of the...
Extremely disappointed with this lens. Poor focus after 15', Images never sharp under any condition. Not at all what you would expect from an L series. Lots of $$$$ poor performance. Working on...
I bought this after trying the Sigma and have since returned the Canon to get another copy... The lens back focused between 24-50mm but was very sharp out to 70mm. I'm looking to get my next copy...
This is my third Canon L class lens and it more than exceeds my expectations. I got it yesterday and fired off some test shots today. Even indoors, without the flash firing, just steadying myself...
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