Need a High Quality 2x converter for Canon mount!

[Lakis Amarantithis]

I use the Sigma 2x APO and the Canon EF 2X III with very Very poor results. The best pics I took with those are almost blurry even after sharpening... Extremely unhappy.

Does anybody know of a very high quality 2x converter for Canon EF mount to suggest?

Thank you.

 

[Sabyasachi Patra]

It depends on the lens. There are few lenses which work great with the 2xII or 2xIII TC. The If the original lens is not great, then using a 2x will give you poor results. Which lens are you using?

 

[Dan Kanes]

A doubler is rarely a perfect situation, more of a compromise.

I use a Tokina EF doubler and it works well with my 70-200 is v2