EF 50/1.4 usm vs 7artisans 55/1.4mkii

Jan 21, 2022
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Recently picked up a used boxed pristine 7artisans 35/1.4 I’m currently using it on my M50, works great. I also have a used 7artisans 25/1.8 arriving tomorrow too
Both were ridiculously cheap so no damage to the wallet

I’m now tempted to buy a used cheap 7artisans 55/1.4 mkii as well, but
I have several 50mm inc a few non canon.
My question is would the 55mm 7artisans give me something that my canon 50/1.4 usm cannot??

My worry is that focusing the 25 & 35 manually is easy, however, the 55 is almost equivalent to 90mm (88mm) in FF and at 1.4 the DoF is gonna be crazy thin, I’m just wondering given the M50 has eye focus if I’m better off sticking with my canon ef50/1.4 ?

Optically would there be much difference ?

Any advice?
 
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