[davidmanze]

Maybe there are more differences than we think between the Pentax and the Tamron........ or is it just erroneous information at this point in time !!

  According to Ricoh's specs ........ the lens is made or uses magnesium alloy .....

.... yet Tamron's reviewers talk about a plasticy feel !!.... 

...... as yet I struggle to find a clear view of the DAF's front element coatings .... ........ of  the little of what I can see though (a corner) looks fluorine coloured ... rather than the red HD versions.