Originally posted by ogl Yes I have had a GXR with P10 for 10 months and the GXR mount for 8 months. I use the P10 when I travel and the GXR mount with OM lenses with Rayqual OM to LM adapter, a 25mm Snapshot Skopar, 35mm Color Skopar, 40mm M-Rokkor, and 90mm M-Rokkor.
The GXR has the best manual focus assist I have used since my OM1. Magnification with focus peaking solves many problems. The Panasonic G1 has a superb EVF, but the screen magnification was awkward to use compared to the GXR. The G1 was much better than the Olympus E-P2 which took 5 key presses to bring up the screen magnification.
As presbyopia has developed, I find it more difficult to manually focus. I find it nearly impossible without my VF2 and focus peaking. I can not hold and operate a camera at arms length. I value small light weight cameras and lenses. The one feature of current dSLRs that I value is the fast phase detect auto focus in Nikon, Canon, and Sony cameras. If Nikon did not cripple the V1 so it does not meter with my current lenses, I would have adopted the V1. It is a fantastic auto focus camera with a juvenile user interface. Sony, with the NEX-6 will have fast autofocus with selected lenses as it now has phase detection in it's sensor. With an adapter for my current M mount or OM lenses I can have one camera for both fast autofocus and still use my legacy lenses.
However, I like my GXR. It is the best camera I have used since the OM1n. The M mount module, with it's lack of AA filter, and micro lenses that correct and prevent chromatic aberration with wide symmetrical focus lenses (like my 25mm Snapshop Skopar or the Voigtlander 12mm, 15mm and 21mm lenses) is superb. I already own the GXR and M Module. I like it's interface. I would like to be able to adopt and use the fantastic DA and FA limited primes. I anticipate that as I migrate to autofocus lenses, I would eventually sell my leica mount lenses.
That is why I look for a KAF module. I am willing to accept the need for a longer extension barrel from the body of a module containing the sensor and shutter to the KAF lens mount. Such a solution would look similar to the GXR Mount with a novoflex K mount adapter. There will probably need to be some increase in size to accommodate the AF motor and Aperture control. There is no free lunch. I think that it would be smaller and easier to hold than the K-01.
There is no need for a K mount module as the M Mount module with a Novoflex K to M adapter works fine today for manual focus. In fact, since Novoflex also makes a K mount to NEX adapter with aperture control, one could argue that for manual focus of DA primes, the Sony NEX, especially the NEX-6, might be the best platform for their use.
The one reason for a RIcoh-Pentax KAF module for the GXR is to implement auto focus.
The DA and FA limited lenses are smaller and of higher quality construction than the micro-four thirds primes. They are much smaller than Sony Alpha lenses or E mount lenses. OM lenses are about the same size, but are out of production and are not auto focus. The APS sensor is larger with more quality potential than a 1" or four thirds sensor. The data suggests an APS KAF GXR Module as the best compromise.
Now if Ricoh-Pentax would produce a compact mirrorless Pentax with a built in EVF (think of a totally redesigned K-01, with EVF, but the body proportions of the classic Pentax ME) the need for a GXR KAF module would evaporate. But Pentax has not provided any support for an electronic viewfinder for the K-01 or for the Q or Q-10. This is a dramatic company failure.
Using current cameras as an example, I would think that an updated K-01 with an integrated finder, could look very much like a Sony NEX with the LA-EA2 adapter (phase detection autofocus adapter for Alpha mount lenses) attached. The original LA-EA1 adapter supported contrast detect autofocus for Alpha SSM and SAM lenses but not screw focus lenses. The Sony 5n support a high quality external EVF, the NEX 6 and 7 have integrated EVF. I would argue that all of the NEX, with an attached LA-EA1 or EA2 are smaller and easier to handle than the K-01. Look how much smaller the NEX with adapter is compared to the Sony APS dSLRS (Alpha SLR 37, 57, etc). The Sony dSLRs are about the same size as the K5 or K30.