>>4131476>this is straight up wrongIt is wrong, the real equivalent is more like a 35mm f/1.2, but there's no need to split hairs
>MF has much better low light performance due to iso and how much you can push it.Well, yes, you could say that a 6x9 image shot at ISO 800 has the same amount of noise as a FF image shot at ISO 160 if you're an actual autist, but to the rest of us it's a lot more intuitive to say it in terms of equivalent aperture, which happens to also work for DOF.