Some images with Sigma 150-600mm with Sigma 1.4x Tele Convertor.

[Havana]

Great shots - mind if I ask what body you are using?

Thanks for commenting.
I use a Canon 80D crop sensor camera.

 

[Havana]

Great series! I'm surprised the AF worked at all... with the 1.4x on the Sigma, you're at f/8, and I didn't think the AF on the xxD series bodies worked at apertures smaller than f/5.6?

Thank you for commenting.
When I said it requires a lot of light for the AF to work properly, it was maybe the wrong phrase to use.
My Canon 80D has 45 individual AF that I can use, when I use the 1.4x TC with the Sigma lens, I am restricted to one AF point (centre point). With lens set at 600mm and TC attached F9 is as wide as the aperture will go.

 

[Havana]

Very nice, and interesting that it works better with good sun.

Thank you.

 

[Havana]

Great set.

Thank you.

 

[Havana]

nice shots, doesn't look like there was much loss in sharpness with the tc?

Thank you.
Not to much in these images, but there is always a trade off with getting closer shots and sharpness when using a TC.

 

[Havana]

Out of interest what is it like with birds in flight?

I can only speak of my experience with the combo I use.
It is does not work for BIF, the AF is not fast enough and the use of only one AF point is a drawback.

 

[Havana]

Looks pretty decent for a converter and zoom combo!

Thanks for commenting.

 

[squirl033]

Great series! I'm surprised the AF worked at all... with the 1.4x on the Sigma, you're at f/8, and I didn't think the AF on the xxD series bodies worked at apertures smaller than f/5.6?

Thank you for commenting.
When I said it requires a lot of light for the AF to work properly, it was maybe the wrong phrase to use.
My Canon 80D has 45 individual AF that I can use, when I use the 1.4x TC with the Sigma lens, I am restricted to one AF point (centre point). With lens set at 600mm and TC attached F9 is as wide as the aperture will go.

Ah, okay. I knew the 7D Mk II will AF using the center point only at f/8, but didn't realize the 80D did as well. Thanks!