Originally posted by zapp For 15 years you cannot get something like the 1.4/85, the 4/200M, the 2/24 or something like the fast tele lenses. Even used 15 year old lenses don‘t really fill the gaps.
This makes sense, there was no immediate need of making full frame lenses until 2016, since Pentax remained apsc only for digital camera until the release of the Pentax K1. Pentax (under Hoya) released a number of apsc lenses, including the limited from 15mm to 70mm, 35 macro ltd, 16-85, 20-40, 18-135, 55-200, 55-300 and more. For the Pentax K1, Ricoh made 4 new lenses (150-450, 70-200) and borrowed other designs from Tamron, which was ok until 2016, mid 2017. It is for the last 2 years that Ricoh seem to have slowed down significantly more (if not totally) relative to the previous 15 years.