Nikon 1 v2 Reference Manual page 71

Taking Photographs During HD Movie Recording
Press the shutter-release button all the
way down to take a photograph without
interrupting HD movie recording. Photo-
graphs taken during movie recording
have an aspect ratio of 3 : 2.
A
Taking Photographs During Movie Recording
Up to 20 photographs can be taken with each movie shot. Please note
that photographs can not be taken with slow-motion movies.
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