SMC Pentax -M 1:2 85 mm
Pentax originally said
"Creates a soft focus effect in the areas just beyond the depth-of-field. Ideal for portraiture, indoors or out. The moderate distance between the photographer and the subject makes this lens particularly excellent for pictures of children, , night time street scenes, illuminated buildings, and for theater and ceremonial pictures."
I have never used this lens.
So here is a "fence test" wide open at f/2 showing the out of focus effect.
https://www.box.com/s/wefkg1ly4wmlu3m39zv2
A messy tree branch shot at f/11
https://www.box.com/s/pr1mvdsukww8xpixig0n
"portrait" (I don't put family members up)
At f/2 , difficult to focus so used the Magnifier M on the face.
https://www.box.com/s/i6nnfe3sdhnslsmpimn6
On the fence test full size on the 22 inch Eizo, , I do see some obvious purple fringe on the out of focus zone near to the camera, but I suppose the lens was not intended to be framed like that and Pentax said "just beyond...".
Maybe that is the origin of Yusef's query?
The fringing on the out of focus beyond the subject looks OK ??
Today I will try some family shots with SMC Pentax -M 1:2 85 mm on the MX with some Fuji 400.
But after the above lesson will stop it down f/5.6 or so to ensure focus.