What to expect#
Aperture control: lenses with a manual aperture ring work directly; electronically controlled lenses (no ring) need a smart adapter or one with a built-in aperture lever.
Focus: use focus peaking and magnification in the viewfinder. Exposure metering works normally because the camera meters through the lens at working aperture.
Crop factor: on a 5.5× crop Pentax Q body a 50 mm Four Thirds lens frames like 275 mm. A focal reducer (“speed booster”) can bring back some width and gain about a stop of light.
Four Thirds lenses you could adapt#
- Samyang 14mm f/2.8 AE ED AS IF UMC
- Samyang 85mm f/1.4 IF UMC Aspherical
- Samyang 8mm f/3.5 Fish-Eye CS
- Olympus Zuiko Digital 11-22mm f/2.8-3.5
- Olympus Zuiko Digital 14-45mm f/3.5-5.6
- Olympus Zuiko Digital 14-54mm f/2.8-3.5
- Olympus Zuiko Digital 25mm f/2.8
- Olympus Zuiko Digital 35mm f/3.5 Macro
- Olympus Zuiko Digital 40-150mm f/3.5-4.5
- Olympus Zuiko Digital 70-300mm F4.0-5.6
- Olympus Zuiko Digital ED 12-60mm f/2.8-4.0 SWD
- Olympus Zuiko Digital ED 14-35mm F2.0 SWD
- Olympus Zuiko Digital ED 14-42mm f/3.5-5.6
- Olympus Zuiko Digital ED 40-150mm f/4.0-5.6
- Olympus Zuiko Digital ED 50-200mm f/2.8-3.5
- Olympus Zuiko Digital ED 50-200mm f/2.8-3.5 SWD
- Olympus Zuiko Digital ED 50mm f/2.0 Macro
- Olympus Zuiko Digital ED 7-14mm f/4.0
Pentax Q cameras#
- Pentax Q10 2013
- Pentax Q7 2013
- Pentax Q 2011
- Pentax Q-S1
Other systems for Four Thirds lenses#
Frequently asked questions#
Will Four Thirds lenses autofocus on Pentax Q?
No — adapted lenses are manual focus on this combination.
Does a Four Thirds to Pentax Q adapter affect image quality?
A glass-free adapter is just a precisely machined spacer, so image quality is unchanged when it is built to the right thickness. Cheap adapters can be slightly too thin or thick, which shifts the infinity mark.
Last updated October 03, 2026 · How we calculate · Sources