Canon extender 2x mk ll on Canon 6D produces black images - SOLVED

[Starlight90]

Hello everyone,

I have a Canon 6D camera and 2 2x mk ll EF extenders (canon official), I have read that you can stack these extenders and get a bigger and better view of an object.

The Lens I'm working with is a  canon EF 100-400mm f/4.5-5.6 L IS USM Lens with the 2 extenders, however my live view doesn't with them both attached to my camera and lens, but I can see through the view finder, after I've taken some photos of the moon just to test and observe, I go back to check to see how they came out, it's all black, like nothing was taken, just a black void.

Can anyone advise?

Thanks 

[Starlight90]

Thank you to all, I can confirm that you can indeed stack 2 2x converters with the 100-400mm l series lens, as I have tested it out tonight on the moon. 

Thank you to all for your reponses. This is now solved.

[Waddizzle]

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@Starlight90 wrote:

Thank you to all, I can confirm that you can indeed stack 2 2x converters with the 100-400mm l series lens, as I have tested it out tonight on the moon. 

Thank you to all for your reponses. This is now solved.

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Congratulations!  What was the final solution to your issue?

Could you mark the most helpful reply as the “Answer”?  Thanks, ahead of time.