I suspect Canon knows this, which is why there have been updates to the 50/1.8 and 50/1.2, while the 50/1.4 has languished.It was the kind of shit useful in the film era.
Now, if you want to redo it to be non-shit for modern sensors, it will weight and cost 3 times as much. Given that ISO 3200 is the new ISO 400 now, the lens will have a dubious value.
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