Originally posted by texandrews Well... will this new stabilized lens work with IBIS?
That seems to be the tricky part:
Originally posted by Pentax Rumors: HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR SR (...) that will be combining in-body and in-lens stabilization (...)
I was also told that the development of the new HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR SR lens has begun quite a while ago but was delayed by difficulties in making the sensor stabilization and optical stabilization work together.
I heard the same from a source of mine, with the following addition: the difficulties in the development of the dual stabilisation (lens + sensor) would be linked to the system, and in particular the initially chosen optical scheme, requiring, for the dual stabilisation to work correctly, data transfer rates between body and lens (and vice-versa) higher than what the communication protocols of the KAF
4 mount could allow. As a result, the engineers would have had to go back to the drawing board, so to speak, and in particular to rework the optical scheme.
The above comes from a person who, considering their job, sounds legit but it's the first pieces of information I received from them. Take it therefore with the appropriate grain of salt, even though the Pentax Rumors article corresponds exactly to part of what they told me, which tends to give credence to the whole of what they said.