272g, MFD = 0.3m, roughly fixed the dent of filter ring, a gift Info > http://www.takinami.com/yoshihiko/photo/lens_test/pentax_28-30.html According to the Takinami's resolution test, this K 28/3.5 is the sharpest 28mm. Also > http://www.pentaxforums.com/lensreviews/SMC-Pentax-K-28mm-F3.5-Lens.html