After having this lens for a few days, I haven't had the chance to take a lot of photos with it but a few things I noticed is one, it's really small (more so than the SMC Takumar 28mm f/3.5) and two, it's very sharp, even wide open (f/3.5). Here's some size comparison shots to my other Takumar lenses.

To make this a complete picket fence happy family, I'll need to adopt the 35mm 2, 50mm 1.4, 85mm 1.9 and the 105mm 2.8.