Sigma 2x Tele Converter

Alex90 · #1 (**permalink**) 16-10-2009, 08:06 PM

Hi,

Does anyone have any experience with Sigma 2x tele converters? or converters of other makes?

if so would you recommend using them? what are the pro's and cons?

nightshade · #2 (**permalink**) 17-10-2009, 08:27 AM

I plumped for the 1.4 Kenko Pro ( apparently it does not foul the rear element of some long lenses) 2X converters take an extra stop of light which can make some autofocus systems skittish

willing to learn · #3 (**permalink**) 17-10-2009, 10:22 AM

I have a 1.4 X TC and 2.0 TC both Canon and both work well " if the lens" is
up to the Job. I think much depends on the lens if you are to get satisfactory
results with converters. See if you can loan one and try it with the lens or lenses you have.
Regards
Colin

Pete W · #4 (**permalink**) 17-10-2009, 09:01 PM

Some more info would help on

What Camera lens combo do you want to use it on ??

I have Canon kit and use their extenders..

BillyPilgrim · #5 (**permalink**) 17-10-2009, 09:10 PM

I've just bought a 2nd-hand Sigma 2x converter to use with my Canon 500mm lens. I thought long and hard about getting one because I thought the image quality would suffer badly but I was quite wrong.

You will lose autofucus with a lot of bodies though.

I've been really pleased with the results so far. This test shot was taken at 1/200s, ISO 1000 on a very dull day...

Mallard - Wild About Britain Pics

willing to learn · #6 (**permalink**) 17-10-2009, 09:40 PM

2 X TC + 300mm 100% crop. At last the 1d 2N seems to work, its been back and forward to the service centre for the last several months. This is a test shot I took while trying it out.
Regards
Colin
double click for large size.

Alex90 · #7 (**permalink**) 18-10-2009, 01:09 PM

I would be using it with:

Body: Canon 300D Digital
Lens: Sigma 150-500mm f5-6.3 APO DG OS

John D · #8 (**permalink**) 18-10-2009, 09:02 PM

I use a Sigma EX 1.4 TC with a Sigma EX 100-300mm f4 lens on a Canon 40D and find it to be an excellent combination. AF is maintained throughout.

John D

Zenfolio | John D's Wild World

Badllarma · #9 (**permalink**) 20-10-2009, 08:27 PM

I've used both a sigma 1.4 and the 2 and both provide less than perfect results with my 120-400mm sigma lens I would describe it at soft and softer never really happy with what it produces. Although it is manual focus so could be me I suppose but as sharp as I think I have it it always seems soft.

The 1.4 on the sigma 70-210 f2.8 on the other hand is an excellent combination and works well.

DrNickBurton · #10 (**permalink**) 24-10-2009, 08:41 PM

Quote:

Originally Posted by John D

I use a Sigma EX 1.4 TC with a Sigma EX 100-300mm f4 lens on a Canon 40D and find it to be an excellent combination. AF is maintained throughout.

John D

Zenfolio | John D's Wild World

I also have this combination and I'm very pleased with the results it gives me.

I used to own a Sigma 150-500mm, and did try it with the 1.4 TC - I wouldn't really bother to be honest! The AF didn't work properly (couldn't get a lock most of the time) and the images were really soft. With a x2 TC it would be even worse!