[thxbb12]

All but one of the DA lenses from the past collaboration with Tokina were Pentax designs. None was a rebadge.

All of these Pentax lenses are also Tokina lenses:

• Pentax DA 10-17mm f/3.5-4.5 Fisheye
  
• Pentax DA 12-24mm f/4
  
• Pentax DA* 50-135mm f/2.8 SDM
  
• Pentax DA* 16-50mm f/2.8 SDM
  

Among these, which ones are actual Pentax designs? (and not Tokina)
Somehow I'm doubtful they are Pentax'.

Keep in mind that they also all exist in other mounts (namely Canon and Nikon).