Sorry admin but, no, an APS-C 52mm f2 lens is absolutely not the equivalent of a FF 85mm f2 lens, but rather of a FF 85mm f3.2 lens. I was really hoping for a 52mm lens of at least f1.4, which will be the equivalent of a FF 85mm f2.2 lens. I guess that Canon wants to keep this lens small, perhaps for it to even share a 43mm filter thread with the 22mm f2 and the 32mm f1.4, but subject separation is already not that great with the Sigma 56mm f1.4 used wide open, at least compared to the results of a FF 85mm f1.8 shot also wide open on a FF body and taking into account each lens' price. I am on the fence for a FF 85mm equivalent lens, as my current portraiture setup, a 50mm f1.8 STM+EF to M adapter, is not optimal size-wise, weight-wise, IQ-wise, or AF-wise, but given that the only current choice, the aforementioned Sigma, is relatively expensive for what it does (FF, native, 85mm f1.8 DSLR lenses are cheaper than it), and that this Canon 52mm f2 will probably be even more expensive (should cost around the same as the 32mm f1.4), my only possible and sensible choice will be the upcoming Viltrox 56mm f1.4, which its MTF chart points it to be somewhere between the Sigma 56mm f1.4 and the 50mm f1.8 STM.