Great adapter, Very well made. fits with the lens bought for it and goes onto my fuji very well. There is no play when the adapter is on my camera

Does the job well, it seemed very well built, a quality product. I returned it though as the fit to the body wasn't quite as tight as I would've liked. Please bear in mind though I was being VERY picky and I wouldn't expect it to cause ANY problems.

Originally I thought just the thread would be metal on this adaptor but the whole thing is metal. Fantastically built and works perfectly with my Carl Zeiss Jena lenses!

I ordered the K&F M42 to Fuji FX adapter not knowing whether it would work well with the old Helios and Jupiter lenses I was hoping to use. It works perfectly!The adapter's an all metal build and feels well made and sturdy. It fits snuggly with the lens and the body of the camera (in my case the Fuji X-T10), there's no wiggle or movement once mounted.The adapter has a removable flange for those lenses that have an aperture pin that needs pressing in order to shoot anything but wide open. No need to modify the lenses to keep the pin pressed which is great! I didn't see any reviews that mentioned the flange, so was extremely happy to discover it was there.I haven't had any issues with focus to infinity using the adapter on any of the M42 lenses I've tried. They all appear to work perfectly.Obviously all lenses will be manual focus only, but if you're buying one of these adapters I'd expect you already know that. Set the camera to shoot without lens, and switch the focal lenth to that of your lens and you're off! Focus peaking also works a treat with these older lenses.

Excellent adapters would highly recommend

Works well and is quite robust

Works perfectly with my X-T10 and my M42 lenses. My 50mm 1.4 stay on the Fuji most of the time, and focus peaking makes manual focus a breeze.

This adapter is great value for money. It is reassuringly solid and sturdy and does exactly as it should - allows you to mount your M42 lenses on your Fuji X bodies. For just a few quid you have access to a huge wealth of wonderful old lenses which can be bought at very reasonable prices because people don't want to focus manually any more - or maybe you have some M42 lenses stashed in the loft somewhere which you haven't used in years.In my case I have a Helios 44M (cheap as chips from eBay recently) and a couple of Super Takumar lenses handed down to me by my aunt and I believe about the same age as I am.I have been using this on an X-Pro1 and loving the results. Pop the adapter on, pop the lens on, switch to manual focussing and make sure you have focus peaking enabled on your camera. I found it much easier to use these vintage (and superb) lenses on my X-Pro1 with this adapter than I did with my EOS 6D - manual focussing is made a doddle. No reason to pay more than this, I'm tempted to get one for each M42 lens I own.I've attached a photo of a carved stone head from a church window taken using this adapter when I had the Helios 44M attached to it. This was shot with the Helios wide open at f2, manually focussed (of course) using the focus peaking feature of the X-Pro1. Focus nailed on the eye.

Very well made piece of kit, all metal construction. My old M42's fit it well, getting excellent bokeh too. Worth a try.

Excellent product but over priced