However, although, I am not an expert, I have often heard bad reviews about the Takumars designed for the K lenses. It might not be the case for every single lens of that serie, but before purchasing one, make a deeper research regarding that one.
Those are the ones called "Takumar (Bayonet)".
I do use a digital device in my photographic pursuits when necessary.
When someone rags on me for using film, I use a middle digit, upraised.