Kenko Pro300 DG 2x Converter

[rich_cooper]

I looking at getting a 2x converter to put on my Sigma 70-200 f2.8 for motorsport use. Ive been looking at the Sigma 2x converter but ive found a decent deal for a Kenko PRO300 DG canon fit.

Is the Kenko any good ?

[puddleduck]

Sorry I don't know how things are in Canon-land, but I can confirm that the Kenko and Sigma does not play well together in Nikon land.

Symptoms include erratic metering, and AF hunting.

[rich_cooper]

Sorry I don't know how things are in Canon-land, but I can confirm that the Kenko and Sigma does not play well together in Nikon land.

Symptoms include erratic metering, and AF hunting.

Thanks mate,

Shame if that is the case!

[stew1982]

The KenkoPro300 is an excellent converter, not sure though how it gets on with Sigma lens. it will hunt a little if your using an F4 lens or above, but on a 2.8 it should be good unless it is really low light!