I bought this K&F converter in order to pair a X-T1 with a Nikon 300mm 4.5 ED-IF which weighs 35 oz ./990g.It works flawlessly.My opinion on this converter :- solid and well made (looks perfectly as images shown/and yes, it allows focus infinity) ;- the paint of the converter matches more the paint of the X-T1 (mat paint) more than my lens ("brilliant" paint);- the device to unscrew the lens feels great but I find it a bit greasy : some fiber/dust may glue there;- the item come in a protecting bubble paper inside cardboard box : I recommand to keep the converter on the lens and to find an fuji-x rear lens cap when needed to change lens.My only drawback:-it feels a little loose on the lens side, but that can be my lens. I currently do not have an other Nikon AI-s to compare with.I recommand this purchase.
12.07.2015
Well it works fine, some things you should know before buying it.1. Your camera will NOT autofocus.2. In you camera menu Look for the option "shut with out lens" (I'm translating this from spanish so, i guess that is the translation)3. Put your camera in "A" mode. (this wil give you the correct exposure)4. Very important your lenses should have a F ring, you can control manually the F with this. Therefore lenses without F ring will not WORK. (For instance, I try succesfully with Tokina 100mm Macro, Nikorr 50mm 1.8D AF, and Samyang 85mm 1.4.5. The device is made of plastic and metal. I didn't have problems attaching and dettaching my lenses.6. Be sure the red dot of the device is over the red dot of your camera when you attach then lens, to avoid the lens dettach7. When i did some pictures i sow that they have a crop factor, for instance when i took pictures with my nikor 50mm, the image look bigger, like if i were using 70mm or something like that.Well I m happy, l can use at least three of my lenses for nikon.
17.06.2015