I bought the Optolong L-eNhance Light Pollution Dual-Bandpass Imaging Clip Filter for Canon EOS APS-C - LNH-EOS-C from High Point Scientific. Under Compatible Cameras it lists the Canon EOS 1200D. Which I believe is the Canon T5. I watched the YouTube video and tryed to install the filter as you did (bottom first). Same result. The images look good. So maybe I just need to be careful when removing the telephoto lens. Thanks for responding A & D. Clear Skies Michael

Thanks A & D