Camera vs Viewport
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"The camera's focal length and sensor size both affect the FOV, so instead of reducing the camera's focal length from 50mm to 25mm, you can increase its sensor size from 36mm to 72mm."
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36mm results in the captured camera area being 50% of the screen’s work area/viewport. Simply double the camera’s sensor size to 72mm to make the camera view capture the full screen’s work area.
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