5D Mark III - problem to record at night suddenly, dark frame per 2 frames.

[navism]

Hi!
I am a new ML user.
I records some shot at night.
It has a special problem suddenly.

Please watch this link.
https://www.youtube.com/watch?v=FWtsGmUnr18&feature=youtu.be

I made the slow motion.
It shows that every 2 frames are dark.
I don't know which setting is wrong.

Can someone to know what's problem?

thanks.

[jimmyD30]

Have you accidentally turned on dual-ISO/HDR in the camera?

[navism]

Thanks for reply.

I didn't change to dual ISO,
because I disabled this.

is it something low light setting?

It doesn't have any problem when record in light place.

[jimmyD30]

Have you tried resetting camera and ML to defaults and then shoot dark footage and see what happens?

[navism]

Thanks.
I will try to reset and shot again.
thanks again.
Ivan

[navism]

Hi!
reset is perfect!!
Everything works fine!!