Pentax 6x7 105mm f/2.4 Lens: Fixing Barrel Wobble
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Servicing a Pentax 6x7 105mm f/2.4 lens. This lens had a bit of a wobble to the lens assembly. Not an uncommon issue, it is caused by the loosening of three screws holding the barrel assembly to the outer lens. Solution is simple: tighten the three screws. But the lens needs to be disassembled to this level to access these screws. One of these screws is shown at about the seven position on the mat. This lens is similar in construction to the Pentax 35mm screw mount lenses and they can suffer the same fate. The particular example shown here came Thoriated glass and a very nice scratch to the front element!
