An element in the PIR could be burned out, an object could be passing through the detection area, or something as simple as the sun glaring on grass blowing in the wind. This change in IR radiation can happen for a multitude of reasons. Simply put, trail cameras are triggered by a detected change of infrared radiation in the environment that is being monitored by the camera's PIR sensor. We'll break down each scenario to provide a better understanding of each cause but before we do that it's extremely important for trail camera users to understand how cameras are triggered. It could be how the camera was set up in relation to the surrounding environment. It could be a settings error in how the camera was programmed. So what is the cause of "blank photos" or what we refer to as false triggers? The cause can range from a multitude of things.It could be product failure. It's that same fear of missing out that bites me every fall but that's a whole different topic. From experience, I can tell you it's painstakingly frustrating scrolling through 10,000 photos of nothing just in case there might be a single "real" photo buried somewhere in between. At some point, every trail camera user in the world has had an SD card full of false triggers.
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