Fotasy PK Lens to M4/3 Adapter, PK to MFT, Compatible with Pentax PK lens Panasonic G7 G9 GF8 GF90 GH5 II GX7 GX8 GX9 GX850 G90 G91 G95 G100 Olympus E-M1 E-M5 E-M10 I II III E-PM2 E-PM1 Pen-F E-M1X

I just bought two to use my old OM film lenses with my OM-D E-M1 and M5 digital cameras. So far so good. Great fit, easy release, a few test photos gave good results. This adapter is less than one-tenth the price of the Olympus MF-2 and fits just as tightly and smoothly as any of my digital lenses on my Olympus digital cameras.I assume this applies to PEN cameras as well, but not tested.A few things to be aware of; not faults of the adapter which shares the same characteristics with the MF-2:You can only use Aperture or Manual modes.For the OM-D series, try both Digital ESP and Center Weighted metering, not spot-metering.Your film lens will double in Focal Length. My old 50mm f1.4 lens becomes a 100mm. But my Soligor 300mm f4.5 when added to my 2X tele-converter becomes a 1200mm f9, wide-open!!You need to use stop-down focusing/metering. That means opening the lens to the maximum f-stop to focus, and then maually stop down to the aperture you need for depth-of-field.Obviously this means some experimenting and learning; a small price to pay to put thole old lenses to work again, meaning you don't lay out thousands for newer equivalents.And experimenting? OM-D shooting means all you need to do for testing in Aperture Mode is record your f-stop. The EXIF file will show the exposure time with an Aperture of 0.0.So you get the fun of re-discovering proper exposures without the penalties from waiting for film developing with the freebie of taking many shots for learning. How can you resist!I do have one gripe, however. I wanted to order four but was limited to only two. I wasn't buying for resale. I just wanted to fit them to all my old lenses for ease of changing lenses.My gripe just shows how valuable these adapters are. At this price and quality you can't lose.

It's a shame that this product is rated so low. Unfortunately some of the people that ordered it got a product from Kiwi that was apparently terrible. The actual product that is now shipping from Rainbowimaging is fantastic. I'm using this with an Olympus OMD-EM5. Here's my list of pros and cons.Pros:- Well made! Solid metal, fits my Nikon lenses and Olympus perfectly.- Aperture control. Just turn the dial on the mount and the aperture in the lens opens and closes.- Works with Nikon G!, D, and AI lenses.- Looks really nice.Cons:- Be careful taking it on and off the camera. Mine rotated a little past where is was supposed to and has a tiny scratch because of it.List of lenses I have attached:Nikon 80-200mm f/2.8D EDNikon 35mm f/1.8GNikon 18-55mm f/3.5-5.6G AF-S DX VROverall:Awesome product for an awesome price. If you need an adapter with aperture control, this is the one. I was really surprised by how well it was made for what it cost. The only thing I'm a little disappointing with is the darkness of the viewfinder and the LCD of the camera when taking pictures with manual lenses. This isn't a knock on the camera, just something that you should expect.

If you read the reviews or the MFT forums, you quickly learn that these low-cost adapters are very variable in quality. I may have lucked out, or Fotasy may be one of the better brands, I cannot tell which. The one I got fits very well onto the camera body (Olympus E-PM1). The fit on the lenses is very stiff, due to the springs cut into the bayonet mount. The bayonet flanges have a slit machined behind them that acts as a spring, holding the lens very tightly. This is the standard design of the Exakta mount, and it works well on this adapter. It's a good thing. It means you have hold both lens and mount firmly and apply some steady strength when turning it. Twist but don't force.The little lever that engages the lens' locking pin barely locks on my copy of the adapter. You have to manually close it, because the fit is so close that the little hair-spring in it can't force the lever closed. It would probably benefit from being filed out very very slightly, but it works well enough that I'm not going to bother with the hassle of removing it and filing it.Most important: as expected the adapter is slightly short. That is reportedly the case with most of these low-cost adapters. The lenses focus past infinity. To achieve proper infinity-stop focus, you must remove the adapter's face plate and put some thin shims behind it. All you need is a tiny Phillips head screwdriver, a pair of scissors, and a sheet of aluminum foil. You remove the four screws holding the face plate, and cut four shims about 1/4" long and 1/8" wide. You can place these next to each of the screw holes (you don't need to screw through the shims.) My adapter needed four thicknesses of standard-weight Reynolds Wrap aluminum foil, but yours might be different. Test the camera with your longest focal-length lens first, and focus on something really far away, like the moon, with the aperture wide open. It took me about half an hour of trial-and-error to get it shimmed properly. Attached photo shot with Schneider Xenar 135mm on shimmed adapter. Note the sharp craters visible at the top edge.

Cheap and simple! Works perfectly