Sigma AF EX 2.0x APO converter Canon Fit

ray · 28-03-2008, 22:37

Can anyone tell me please if this, would be compatable with my 350D & Canon EF 70-300 F4/5.6 IS USM here is the item thank you ...Ray

Sigma 2X EX DG APO TeleConverter AF for Canon EOS Cameras

**Sonsey** · 29-03-2008, 01:39

It's compatable yes, but you'll loose autofocus.

***Steve*** · 29-03-2008, 07:21

You would be far better with the Kenko 1.4x pro DG teleconvertor. Its excellent quality and would allow you to retain autofocus. I used it on my 70-200L to get the first three shots in this thread. Obviously only you would be able to decide if the extra range of the 1.4x is enough for your shooting.

ray · 29-03-2008, 07:57

Thank you the kenco does look better for me im sure it will fit my needs, and it will go in my bag better than the sigma...Ray

**Sonsey** · 29-03-2008, 15:47

Quote:

Originally Posted by Steve

You would be far better with the Kenko 1.4x pro DG teleconvertor. Its excellent quality and would allow you to retain autofocus.

I don't think Ray would be able to retain autofocus with the lens he intends to use it with, even by just loosing 1-stop with a 1.4x t-con... can anyone confirm this please?

***Steve*** · 29-03-2008, 18:14

If he uses it at f5.6 or below the autofocus will still function. If he tapes the contacts on the converter he will still retain AF at above f5.6 but its effectiveness will be subject to the light conditions at the time of shooting.

ray · 29-03-2008, 18:32

Quote:

Originally Posted by Steve

If he uses it at f5.6 or below the autofocus will still function. If he tapes the contacts on the converter he will still retain AF at above f5.6 but its effectiveness will be subject to the light conditions at the time of shooting.

Ah right thanks thats good to know

ray · 31-03-2008, 15:12

Quote:

Originally Posted by Steve

You would be far better with the Kenko 1.4x pro DG teleconvertor. Its excellent quality and would allow you to retain autofocus. I used it on my 70-200L to get the first three shots in this thread. Obviously only you would be able to decide if the extra range of the 1.4x is enough for your shooting.

Is there a big difference between the Kenco PRO and this one please thanks ...Ray

KENKO TELECONVERTOR 1.4X CANON FIT on eBay, also To Fit Canon, For 35mm SLR, Camera Lenses, Photography (end time 06-Apr-08 13:36:08 BST)

silkstone · 31-03-2008, 15:26

I believe that the Pro version has more elements and better performance especially at the edges. I'd go for the PRO 300 DG as Steve suggested earlier. I have the earlier version of the 1.4x (without the 'DG') and that works on the 70-300 IS although it means that the max aperture at 300mm is f/8 and autofocus can be a bit hit-and-miss unless light levels are fairly good.

ray · 31-03-2008, 15:38

Quote:

Originally Posted by silkstone

I believe that the Pro version has more elements and better performance especially at the edges. I'd go for the PRO 300 DG as Steve suggested earlier. I have the earlier version of the 1.4x (without the 'DG') and that works on the 70-300 IS although it means that the max aperture at 300mm is f/8 and autofocus can be a bit hit-and-miss unless light levels are fairly good.

Great thanks for that i will get the PRO

28-03-2008, 22:37	#1 (permalink)
ray Banned Join Date: Sep 2007 Posts: 1,017	Sigma AF EX 2.0x APO converter Canon Fit Can anyone tell me please if this, would be compatable with my 350D & Canon EF 70-300 F4/5.6 IS USM here is the item thank you ...Ray Sigma 2X EX DG APO TeleConverter AF for Canon EOS Cameras

29-03-2008, 01:39	#2 (permalink)
Sonsey Pixalo Crew Join Date: Oct 2005 Location: N. Ireland Posts: 7,239	Re: Sigma AF EX 2.0x APO converter Canon Fit It's compatable yes, but you'll loose autofocus.

29-03-2008, 07:21	#3 (permalink)
*Steve* Pixalo Crew Join Date: Jan 2005 Location: An Englishman living in Germany Posts: 16,120	Re: Sigma AF EX 2.0x APO converter Canon Fit You would be far better with the Kenko 1.4x pro DG teleconvertor. Its excellent quality and would allow you to retain autofocus. I used it on my 70-200L to get the first three shots in this thread. Obviously only you would be able to decide if the extra range of the 1.4x is enough for your shooting.

29-03-2008, 07:57	#4 (permalink)
ray Banned Join Date: Sep 2007 Posts: 1,017	Re: Sigma AF EX 2.0x APO converter Canon Fit Thank you the kenco does look better for me im sure it will fit my needs, and it will go in my bag better than the sigma...Ray

29-03-2008, 18:14	#6 (permalink)
*Steve* Pixalo Crew Join Date: Jan 2005 Location: An Englishman living in Germany Posts: 16,120	Re: Sigma AF EX 2.0x APO converter Canon Fit If he uses it at f5.6 or below the autofocus will still function. If he tapes the contacts on the converter he will still retain AF at above f5.6 but its effectiveness will be subject to the light conditions at the time of shooting.

31-03-2008, 15:26	#9 (permalink)
silkstone Feet under the table Join Date: Jan 2005 Location: Silkstone Common, Yorkshire, UK Posts: 3,387	Re: Sigma AF EX 2.0x APO converter Canon Fit I believe that the Pro version has more elements and better performance especially at the edges. I'd go for the PRO 300 DG as Steve suggested earlier. I have the earlier version of the 1.4x (without the 'DG') and that works on the 70-300 IS although it means that the max aperture at 300mm is f/8 and autofocus can be a bit hit-and-miss unless light levels are fairly good.

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