Bulbs arrived in perfect condition. I've had 5 hours with them with no problems or overheating. I use a Canon 7D II for videos and get great results. These are full spectrum daylight bulbs and I set the white balance to the full daylight setting. I would note that as mentioned in other reviews, (like all other fluorescent bulbs) they are not durable and you need to be careful with them (i.e. get hot. Leave an opening for ventilation. If you want to be mobile/off-road, should spend extra money for an LED.
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