Sorry, but the attempt is pretty lame. If you're going to put up a fake 100-400, your fake should show focal length markings somewhere. No numbers around the zoom ring? More importantly, you're showing a non-extending zoom and it's too short to be 400mm (unless it's a DO lens, in which case you've got the wrong color stripe). Better luck next time.
5D3, 5D2, G5X, G16 | SY14/2.8, V20/3.5, 28/2.8 IS, Ʃ35/1.4, 50/1.8, 50/1.8 STM, Ʃ50/1.4 EX, 100/2.8L IS Macro, 16-35/4L IS, 24-105/4L IS, 70-200/2.8L IS II, 1.4x II, 2.0x III, T28-300 VC PZD, 70-300L IS, Ʃ150-600 OS HSM S