Anyone using an x2 extender with Canon 200mm f2.8 lens?

[Adreneline]

Hi Everyone,

Just wondered if anyone has direct experience of using a x1.4 or x2.0 Canon extender with a Canon 200mm f2.8 lens and ASI1600 or CCD or similar.

Just that combination please.

Thanks,

Adrian

Edited September 27, 2019 by Adreneline
Clarification

[Davey-T]

Nope but can tell you that with the 2X auto focus doesn't work with all camera lens combos notably the 300mm f/4, don't know about the 200mm but Canon have list of compatible combinations.

Dave

[szymon]

21 minutes ago, Davey-T said:

Nope but can tell you that with the 2X auto focus doesn't work with all camera lens combos notably the 300mm f/4, don't know about the 200mm but Canon have list of compatible combinations.

Dave

If you're using it with a CCD or CMOS camera and not a Canon DSLR then the autofocus is probably irrelevant anyway (set it up with a wide-field autofocuser like the Deep Sky Dad AF3 😉).  I use the Canon EF200 F/2.8L with both a Canon x1.4 extender (at f/4) and a Phoenix x2 extender (at f/5.6), and even with both at the same time (at f/8 560mm), which even autofocuses with the 6D (not on the 50D though).  I look forward with interest to seeing the responses on how it works with astro cameras.  It's an awesome lens 😉