That box shaped one is interesting, in the upper right corner of the last pic (which is cropped), think it looks to large to be the frame of an outdoor light. Started testing my IR filter today. Was snowing out again. Had to correct the exposure of light metering setting, add +2 stops to get the clearest photos. Then if the viewfinder isn't covered, the IR capabilities don't kick in. Snow scenes in normal visible light photography,, ofter need close to 2 extra stops adjustment. Lots of green vegetation does the opposite, may cause overexposure. Roofs of some houses had bright patches of orange across them, even though snow covered. It was overcast, photos still were a little dark, snow had some orange to it in areas. Found the best way to hold camera steady. Put fingers around left side of camera, thumb over left edge of viewfinder, then hand against to cover viewfinder. Right hand fingers under bottom of camera and lens, thumb to press shutter. Need to rest either left or right arm against something.