Good quality, solid metal construction, smooth turning of aperture ring from OPEN position (widest aperture) to LOCK (smallest aperture). The only reason for not giving the fifth star in my rating is because the aperature ring does not close my lens completely to its smallest aperture f22 - the highest aperture setting appears to be about f16, therefore my f1.7 to f22 lens cannot be set at f22. The aperture control ring has a total of 5 stops: OPEN (largest aperture setting), LOCK (smallest aperture setting), and 3 click stops in between. Of course you can choose any setting between the click stops as well. There is a less expensive version of this type of adaptor that has stops marked from 0 to 7 (8 stops) which handles my f1.7 to f22 perfectly from largest aperture f1.7 to smallest f22. This lower priced product does the job nicely but the thing that I do not like about it is that the aperture control ring is not smooth at all (probably no ball bearing). The smooth aperture ring product of this review does work for all stops on my 28-80mm Maxxum zoom lens.
17/02/2017
I am extremely impressed with the quality of these adapters. I have 5 now, and while they might be a couple of pound more expensive than some others found on ebay, when you hold them in your hand, you know you're getting good value. They are all precision machined metal, with high quality finishes, and the control rings on adapters that have them, have a very satisfying action to them.For dumb adapters (ones without electrical contacts for modern lenses), getting anything more expensive than these adapters is a waste of money. They do everything you need and couldn't possibly feel more sturdy or satisfying to use in my opinion.Note: if you want an adapter for a nikon ai lens, the nikon G adapter also works, the aperture ring just doesn't do anything. I use the one adapter for both ai and g lenses.
08/02/2017
Have 4 of these k and f concept adapters for nikon lens and the following camera ends ... sony e, m43/mft and m42 screw. They all seem well made and are a good snug fit. No looseness. Excellent.
23/01/2017
Brilliant product. These adapters will save you a fortune if you have older 35mm kit lying around. I was able to use my old Sigma macro, plus a couple of old Minolta lenses. You lose auto focus abilities, but most micro 4/3 cameras have good focus assist settings. The viewfinder zoom does not appear to function on my EM10 mk ii with this adapter, but the peaking assist works brilliantly. With macro shots I would say it's actually preferable to full AF due to the narrow depth of field.I'm no pro photographer. I just dabble really (it compliments my other hobbies rather than being a hobby in itself for me). I'm sure there are downsides for those who are optically obsessive. That said, I think this would be a welcome addition to most people's kit bag, and I reckon it's saved me about £1500 or more in replacing my more occasionally used lenses.
28/12/2016
Fast delivery of an excellent product - works well with telephoto and wide angle lens on my Panasonic G80.Firm fit - bargain.
26/11/2016
I've been using this for a month now. The fit to a GH4 is very good. I knew in advance that the automatic features on my lenses would be disabled but that said I have used DX, G, D, and AI(S) lenses with this adapter and they all work. Obviously the crop factor for the DX lenses is less noticeable, but noticeable none the less. My go to lenses with this are my AI-S lenses 26, 50 and 105. That leaves a hole at the wide end and I think a M43 12 or 14 prime should fill that gap. To be blunt the speed boosters with great lenses are less impressive than good primes. The throw on the aperture control is tiny, but once you are used to it, no problem. I found not have the aperture feedback scary at first, but now it's one of those challenges that focuses your thinking. On the GH4 you have to set the menu to "Shot With No Lens". I also disabled the shutter to be safe (set to electronic shutter). For lens hacking it's a little awkward (the Canon mount is better for this) but it is doable. This adapter is a very good deal.
19/11/2016
I am using this to attach my Nikon F lenses to my GX7 body. The adapter is well made and attaches to both camera and lenses securely. It seems to give better results with longer focal length lenses and with peak focusing switched on it is easy enough to get focus. It does have a metal ring to change F stops but I find leaving it wide open works best for me.
28/09/2016
Love the aperture adjuster - some of these lens adapters dont have them. Really good!! If you want something that will allow you to make much finer adjustments to the aperture or control it via the camera... its going to cost a lot more. For the money this is fab!! Looks great too.
15/09/2016
I only say ok, because nikon lenses themselves are just too expensive. I hadn't realized that and will probably never own one!
28/08/2016
Really quick delivery. Very solid adapter which fits perfectly onto my G5 camera with a Nikkon lens. So far so good!
13/08/2016