The black version of the new HD PENTAX-D FA 21mm f/2.4 ED Limited DC WR lens is now in stock at Adorama and B&H Photo.
Previous coverage of the lens can be found here:
MAP Camera report on the new HD PENTAX-D FA 21mm f/2.4 ED Limited DC WR lens
A message from the development team of the new HD PENTAX-D FA 21mm f/2.4 ED Limited DC WR lens
HD PENTAX-D FA 21mm f/2.4 ED Limited DC WR lens officially announced
