Adapter to use Pentax lens on Olympus E-M10

Hi all,
I wasn't sure if this is the right forum for this topic so, Mods, please feel free to move it to the appropriate place.
I recently bought an Olympus E-M10 Mark 2 for my 13 year old son to use + me to use when I am going somewhere and want to travel light (meetings etc).
I have been thinking of using my K fit lenses on the said camera by way of an adapter, aware that it will be manual focus + aperture priority (my usual setting anyway). A Google search has brought up a lot of results with prices ranging from around £20 to £100.
Have you people had any experience of these adapters and would you recommend one?
Many thanks.

I just took delivery on Thursday of a K&F Concepts PK to Sony E adapter. It is very well made, it is for use with lenses with an aperture ring. I have just ordered a cheap one from China that will give some control over my for DA lenses.

John

Hi, I have 2 converters, but the best one of them is the Fotasy DA-m43 version. It works on those lenses with an aperture ring and those without. It's quite hefty, feels solid and the aperture adjustment ring adjuster is well damped. It mounts smoothly on the camera and the lens without noticeable play. I would prefer a click stop when setting the aperture wide open so that it can't be accidentally moved, but otherwise seems good. Had it for over a year without it falling apart..... I use it with the Pentax FA*300 F4.5, DA*300 F4 and FA100 F3.5 macro.

Thanks for that John and Walt. I'll have a look at your recommendations.
Regards.

More-or-less all adapters to use SLR lenses on mirrorless cameras are the same. Like Walt, I have two to use my K-mount lenses on my Fujifilm mirrorless camera - one which gives aperture control (for DA and other lenses without aperture rings) and one for use only with lenses with aperture rings. The former was more expensive (around 22 GBP vs 15 GBP) and is maybe not quite so solid, but both work well. I'm sure the same adapters are available for m4/3 cameras. Mine are branded K&F Concept and can usually be found on amazon and Ebay.

I use a collection of different adapters with my K mount lenses on MFT.
Cheap simple adapters work fine if you have an aperture ring. As John mentioned there a DA version as well to give some aperture control when the lens has no ring. I've not found these that easy to use so very rarely adapt the newer lenses.

Other options that might be of interest are more sophisticated:

I use a focal reducing adapter which widens the FOV roughly to APSC 1.5x crop (instead of MFT 2x) and gains a extra stop of light. Very handy!! (Mine is actually a MFT-EF reducer with an EF-K adapter fitted as a PK version wasn't available when I got it).

Another convenient adapter (also done via EF) has a helicoid built in. It starts at the right length for infinity focus, but can be extended to give an extra cm or so of extension. Giving a macro setup when desired.

The third specialist type I have has a tilting mechanism allowing the plane of focus to be altered (similar to a tilt shift lens but without the shift) Both the versions I have suffer for being cheap so they're not very controllable. I think a Shift adapter may be available now too but when I last checked these where >£200 and v limited in the mounts available...

Thanks Jonathan and Mike.
I have ordered the Fotasy converter. Although I plan to use my FA limited lenses, I felt the possibility of being able to use the DA lenses would be a good option.