"David J. Littleboy" writes:

That's a seriously cheap lens. Expecting Zeiss quality from a US$250 (EX
quality at KEH) lens is rather off the wall. The 100/4.0 macro is a US$600
(EX quality at KEH) lens, and might have a better chance of competing. You
have to read the fine print and think: the 135/4.0 only goes down to 1:3.2
(it's not even a half-arsed macro lens) and is advertised as "also does well
as a portrait lens". Sheesh. It's a toy The 100/4.0 goes down to almost 1:2,
which is at least respectable.

Pentax made a good macro for the 645 system: The 120/4. It goes all
the way to 1:1 (at 39cm) and produces magnificent results. Too bad
they never released a similarly performing lens for the 67 system.