K&F Concept Olympus OM to Sony E Mount Adapter - Prime Telephoto Lens, Manual Focus, Brass Aluminum Construction, Black

1) All of my Zuiko lenses are sitting too far from the sensor - Infinity focus happens when their distance scales are at about 7 meters. This is not really an issue when manual focusing, but I can't rely on a lens barrel's Infinity stop. It's a good thing the Sony a6000 has Focus Peaking and Ficus Magnification - they are absolutely necessary for manual focusing at Infinity using these adapters.2) All of my Zuiko lenses can be focused more closely than on an OM body. This somewhat compensates the Infinity-focus problem. :-)3) All of my vintage zoom lenses lack the resolution that can be captured by the Sony a6000 24MP sensor. They are just soft, even in the center at f/8, even though they were mire than acceptable with film.4) Only five of my Zuiko primes are up to the task: 50mm f/1.8, 50mm f/3.5 Macro, 55mm f/1.2, 200mm f/4 and 300mm f/4.5. The rest are too soft, wide open, but ridiculously better at f8. The 50mm f/3.5 Macro and the 200mm f/4 are spectacular with the Sony a6000 (at 77mm and 308mm equivalents).5) The OM to E-mount adapter exacts about a 1/2-stop loss of speed from the vintage lenses, much as would any extension tube. It's not a problem, thanks to good high-ISO performance.6) Many lenses made for digital sensors are designed to deliver the light as perpendicularly as possible - to avoid the CA (chromatic aberration) "purple fringing" seen with lenses that were designed for film. I'm getting a lot of CA in the corners of the frame, but it's easily fixed in Photoshop. Note: There's no CA by shooting at f/8 instead of wide open.Lastly: I later bought a Fotodiox adapter and a Fotodiox Pro adapter for comparison and find them to be essentially identical in quality and function, so far, except the blades that engage the adapter to the camera body are about twice as thick with this K&F Concepts adapter and the Fotodiox Pro adapter, where the blades for this Fotodiox adapter are quite thin - which leads me to believe this K&F Concepts adapter (or the Fotodiox Pro adapter) would be the better choices when mounting a heavy lens (or perhaps any lens). Otherwise, the most significant difference is their weights. The aluminum and brass K&F Concepts adapter weighs 3.5 oz. The aluminum Fotodiox adapter weighs 3.2 oz. and the Fotodiox Pro weighs 3.1 oz. See photos...All three adapters have a length of 33mm, from the body mount to the lens mount, and again, they all focus well short of Ininfity.Again, the blades that engage the adapter to the Sony camera body are the same thickness for the Fotodiox Pro and the K&F Concepts, but are much thinner (for some reason) with the Fotodiox adapter. Oddly, they all feel the same when attaching lenses or when attaching to the camera body.If I had to do it all over again and money were no object, I would get the Fotodiox Pro, due to its being the lightest of the three at 3.1 oz. vs. 3.2 and 3.5 oz and having thick blades, rather than skinny blades. But the K&F Concepts comes out on top for having the best price, the thick blades similar to the Fotodiox Pro, but weighing 3.5 oz. instead of 3.1 oz. I would avoid the Fotodiox adapter due to its thin blades, where attached to the camera body - they do not inspire confidence. Again, the blades are thicker with the Fotodiox Pro and this K&F Concepts adapter.

If you hold the Depth of Field preview button (the button opposite the unlock button on the lens), that will manually stop down the aperture. Meaning, you are not just stuck at wide-open aperture. The only minor caveat is that you must hold this button down while you snap the photo. For some reason, the manufacturers of this adapter chose to include a stop that prevents the slider on the back of the lens from moving and thus stopping down the lens. This makes no sense to me why they'd go out of their way to prevent this very useful function.Even more confusing is why it's so easily removed. You just need some precision screwdrivers and half a brain. Remove the four screws on the silver plate, lift the plate off the adapter, and then you will find one small screw holding the stop in place. Unscrew the screw and remove the stop. Then just reassemble the back plate with the orientation shown in the image (the notched blade is closest to where the text "OM" is printed).You should be good to go! Now, if you hold the DoF preview button down while snapping your picture, the lens will stop down to whatever aperture you have the ring set to and you will be able to use the lens to its fullest potential. In auto mode, the camera will automatically adjust exposure once the aperture is stopped down.

This adapter was my latest in my quest to find an FD to E adapter that will truly focus to infinity. I have tried lots of different brands. All of them will focus to infinity with a lens 50mm or longer. Wide angle lenses are another story. I finally found one that worked with most lenses in the Fotasy PRO series. They are fine down to a 20mm lens. A 17mm lens is an issue for them. I bought several and some would just barely do it and some would just barely miss. I want one adapter per lens so I needed several. I wanted to KNOW it was right, so I tried this one.Let me start by saying the K&F adapter is the best built adapter I've tried. It fits the lens and camera perfectly. The aperture control is super smooth. When on a lens it feels as if it's an integral part of the lens itself. But can it hit infinity? The answer is yes, but with a slight problem. It goes past infinity by quite a bit. When the lens is properly focused on an object about 100ft away (which for the 17mm is pretty much infinity) the distance scale on the lens shows a touch over 10ft. It's not a lens issue as I have two of them they both show the same result. This could make using hyperfocal techniques difficult. But, it can focus to infinity so it's the one that is mounted on a 17mm at the moment.In conclusion, if you don't use the distance scale on your lens for anything this is the adapter to buy. It's decently priced, very well made, and will hit infinity with any lens. If you set your focus by using hyperfocal distance, then get the Fotasy Pro for anything 20mm or more.

Firstly, I have over 100 vintage lenses, so I've tried so many different adapters and this was the first K&F adapter that I bought in 2015 (I'm going through my old purchases to leave long-term reviews). Since then I've bought quite a few more K&F adapters for my other mount lenses, so at this point, you might be able to guess that I like these adapters a lot!So why do I like them so much? They are not the cheapest adapters out there, but for the price, they are the best adapters I've tried so far. They fit onto the camera quite snuggly which is obviously a good thing and the same can be said for the lens side on the adapter. Overall build quality is very good, even better than I would expect at this price point, so I highly recommend these to anyone using vitnage lenses on modern cameras!

Really well made and so very fine as a design item. Works really well. Fits really well. The only weakness is the glossy internal black finish that reflects some light sometimes and creates glare in some images. Paint your barrel internal shaft matt black K&F! C'mon! I spray painted the internals after taking it apart. It only takes 30 minutes. Taking into account a top quality adapter tears your money for over £100 this is a very good adapter if you are able to paint the insides. And it is incredibly heavy, but it feels superb.

Not massively impressed with this product as you can get the same non smart adapter with equal build quality for half the price (around £10 compared to the £20+ I spent on this one) I won't name drop here but the other brand begins with an F and it's identical in build, looks and overall quality. I was expecting an even higher grade being twice the price but have ended up quite disappointed. For anyone who's buying it I can confirm it works as intended.

So recently i Bought the original Sony a7 , ( coming from Nikon ) soo i wanted to try my 50mm F.14 which has an aperture ring.. and it worked as described. everything is manual there isn't even a 'dot' to confirm its in focus , but it Worked !!! very pleased with the results !! ( my Tamron 70-300 didnt work so well )

This K & F adapter will allow the older Nikon AI lenses to fit onto a Sony E mount camera. It feels well made, a\with a good quality finish.I tried a number of Nikon manual focus lenses on a Sony A7 and all went on well with a reassuringly firm fit and all clicked on positively.A perfect adapter to use Nikon AI lenses on Sony E lens mount cameras.