Just got back my roll of B&W shot thru SME Takumar 50mm/1.4 & Electro Spotmatic.
You are right, with landscapes, extremely sharp from point to point. With portraits, love the ability to shoot night scenes without a flash, coupled with narrow DOF gives beautiful background blur.
However, the narrow DOF also means it is alot less forgiving in terms of focus. A couple of shots at f1.4 were out of focus/wrong focus, especially when trying to focus on a 30 year old camera compared to more modern manual focus cameras.
Maybe a better focusing screen will help?