Posted by a reviewer on Amazon

Ive put this lens through the paces along with the pentax k1 for the past 3 weeks including a trip into harsh conditions roaming around upper arizona and lower utah let alone roaming new york city during my ongoing night projects

Posted by a reviewer on Amazon

Im not a huge fan of the manual focusing ring but i believe thats more of a personal thing than an actual problem

Posted by a reviewer on Amazon

I found it hard to take a bad picture with this lens

Posted by a reviewer on Amazon

You can take an average picture if you work very hard to make every mistake

Posted by a reviewer on Amazon

I use it on a pentax k1 and edge to edge sharpness at various focal lengths is good to excellent although not quite in the class of prime lenses

Posted by a reviewer on Amazon

It is not a professional lens by any means but an excellent choice for serious amateur photographers

Posted by a reviewer on Amazon

Once you get very good at taking pictures you can then invest in professional level lenses