off topic , no ML software related but an ML hardware, maybe a stupid question but what do you think of focal length reducer to be adapt on a 5D3 (sort of a speed booster) when using the 4k crop mode on the 5D3, especially when using the 3.5k 1:1 centered x5 mode which off course depends on the resolution and aspect ratio that your are using, say for example with a 1.64 crop, an adapter that will reduces focal length to 0.72x , to adjust the image size to closer 1.18x crop factor. I don't even know if that is possible to do but was just curious to hear your opinions. thanks and sorry if this is off topic.