Teleconverter for Canon's 55-250mm zoom lens: Is there a 1.5x or 2x teleconverter out there for this zoom lens?
102012
Sorry, there are no teleconverters for EF-S lenses available in the US that I'm aware of. I've heard rumors of EF-S compatible (Kenko?) teleconverters from Hong Kong but I still haven't been able to verify. Either way, its likely that a teleconverter with the 55-250 wouldn't be much, if any, better than simply cropping the image (might as well put the T1i's extra megapixels to good use). Plus a 1.4X teleconverter would add a stop and a 2X would add 2 stops putting your lens' aperture above f5.6, the minimum needed for auto-focus to function.
868095
I don't see why it would not work with your lens. My lens is a 70-200 mm. So with the Teleconverter on it, it extends out to 300 mm. So I want to say yes in your case. Good Luck!!!!
122415
Correct --The 1.4x will lower it 1 f-stop, the 2x will lower it 2 f-stops. This means an f4 will be f5.6 with the 1.4x or f8 with the 2xWith that said, this tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens), and the EF 70-200 f/2.8L, 70-200 f/2.8L IS, 70-200 f/4.0L, 70-200 f/4.0L IS USM, and 100-400 f/4.5-5.6L IS zoom lenses. I don't think it will work on a 24-105
2023706
It will work fine with your teleconverter, but your max aperture will then be f/5.6....... with the 1.4 extender your max aperture will be f/4.0
1673397
I used the 1.4X teleconverter with the Sigma 300 f. 2.8, for pentax. So I do not have experience on its use with the 18-250 Sigma lens. Any way I'm not very happy of it, there is huge decay in quality and in focus. I would not suggest to any friend of mine to buy it.
1190208
You can get a Canon TC-DC58E Tele-Converter 1.4X for $180.00 but you also need the LA-DC58L conversion lens adapter for $37.00 to use it. Both are available at B&H; Photo.
843342
Very sorry, but I have no experience in the use of the 1,4 teleconverter with 150-500 mm. Be aware that at more than f. 8 the autofocus does not work.....so if the maximum opening is f. 5,6 (but I did not check) you can use the teleconverter only with the complete opened diaphragm of the lens.
2150027
I do believe that a 2X adapter to make this 500mm lens a 1000mm lens will work. I believe that there are adapters to buy via Amazon, or there are even 500mm lenses that you can but including a 2X adapter. Hope this helps.
1524482
Teleconverters usually work better with faster glass but if you have lots of light should be no problem. Use a tripod as you take a 300 on a Cmos now your at 450 and add a 1.4 at 675
1427355
Not the 1.4 converter, but with extension tubes. You can retain auto focus with the right extension tubes. Kenko DG Auto Extension Tube Set for the Canon EOS AF Mount works for me.
762747
Hi Pedro - I also have the 18-55 and 55-200 Nikon lenses and have no problem mounting them with the Kenko Pro 300 2X teleconverter. The only drawback is that your autofocus may not be very reliable - but for telephoto shots I almost always use manual focus anyway. Bottom line is, you can safely use this teleconverter with your Nikon lenses.
1588419
The 2x is an excellent extender, however it does slow down the auto focus response of whichever lens it is attached to more than the 1.4x. I think the 1.4x allows for noticiably crisper images than the 2x with my 300mm f4.00 Canon lens, but the 2x does extend the range some of course. I have both extenders, but the 2.0 ends up sitting in my camera bag a lot more often that the 1.4. They are bothe excellent extenders, and make my excellent 300mm lens a very good 460mm lens and an above average 600mm lens in my opinion.
825418
Hi there! This teleconverter will fit in any EF Canon EOS lens and body but not in a EFS lens or body. Make sure your lens and body has the red dot mark. Hope this helps. Have a great day.
352130
Tele converters work best, with fast lenses if you are not going to use it with a 2.8 zoomOr a 105 2.8 VR Lens this will not work for you, if your shooting with a 3.5 or 5.6 as you will lose 1 F stop, when you use a teleconverter!
1057143
yes, i'm using a canon 60D and this teleconverter with this 70_300 lens. Perfectly fine.
1605643
It will only work in manual focus mode with the 50-500mm (i.e. you'll have to focus the lens manually). Like any other 2x converter it will not only double the focal length, but also decrease the aperture by two stop making the lens too dark for any camera to focus automatically (i.e. f/6.3 -> f/18 @ 500mm)!The camera autofocus only works on lens faster than f/2.8, like the 70-200 f/2.8 (or 120-300 f/2.8) for example with this 2x teleconverter
2231209
This teleconverter is for Tamron lenses that you want to use on a Canon camera. I have a Tamron 18-270 lens and a Tamron 150-600 lens and both can be used with the teleconverter on my Canon T3i. Once you get beyond 150 mm, you may have to switch to manual because the AF may not work. But it works great and worth the $$.