https://tinyurl.com/y8vcy6dw
Not sure about the generalizable usefulness of this this gizmo is to reduce
noise. A7RII and likely III allow for micro USB charging to be used with the
battery in
to provide more power. However the batteries seem to be a source of heat and
the sensors run hot as it is. A dummy battery with an external source seems to
reliably cut down on noise for long exposures.
Seems attractive to me but may be less so for other cams.
Mike
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