03-09-2014, 01:57 PM
Be sure to check your camera for light leak (if tethering matters to you). There has been reports that there is an issue when the usb (I think) is used for long exposures light will leak in (sony a7(r?) also has a light leak issue).
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Also you might want to check the sensor for dust (picture of wall out of focus or sky I think is the typical way with lens stopped down). There are reports of QC issues with dust behind (i.e, cannot be cleaned) glass plate on the sensor.
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Also you might want to check the sensor for dust (picture of wall out of focus or sky I think is the typical way with lens stopped down). There are reports of QC issues with dust behind (i.e, cannot be cleaned) glass plate on the sensor.