The 57 becomes a 114mm. It's a nice portrait lens.
Nice compression. I actually use it rather close up in my garden series.
It does a good job in low light reach.
Nice companion to the 40mm 1.8.
It seems Konica saw the future many years ago.
The hex lenses perform way better on digital than they ever did on film.
The 40 1.8 is stellar and the 57 1.4 is not far behind.
The glass is so contrasty that you don't need an EVF to focus on the Pens...
That's a feather in their cap.
Anyone looking for high quality Konica lenses should take a look at kevincameras.com. He must have about a dozen mint 57mm f/1.2's and his prices are pretty much in line with what people are asking on eBay. Maybe a little higher, but his stock looks amazing and he's in the US.
I have NO affiliation with kevincameras.com. Just thought I'd toss it out there since most of the really good eBay 57's are in Europe, and his prices are similar. He's got pretty much every other Hexanon lens as well. I'm thinking of buying a 15mm f/2.8 fisheye...