LOck miror for sensor cleaning

Hi guys,

I have done this many times but somehow I try to clean my sensor this morning, the feature for mirror lock up didn't 'light up' in my menu. I couldn't set my camera to mirror lock up. Is there some setting that I missed?

I tired removing the lens, put on lens, switch on/off camera but still the feature don't light up. Anyone has this experience?

Battery charged?

What @Needa said, it must be full charge.

It doesn't need to be at full charge, but it does need to be at 60% charged, or better.
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Horoscope Fish said:

It doesn't need to be at full charge, but it does need to be at 60% charged, or better.
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Click to expand...

Yes guy. It was the battery. Half charged. Thank you