The internet has quite a bit of reports that the Rokinon/Samyang/Walimex MFT Fisheye has some issues with its focus scale. The reports range from the annoying”Infinity is at the 0.5ft mark” all the way up to “not focusing to infinity at all“. My lens had the latter issue. That’s why I started to look around the net for a solution. Unfortunately I couldn’t find a real tip on how to fix it. The only hint I got was from the rear lens element becoming loose on some lenses.
In fact, the rear lens element was also the issue of my not focusing to infinity problem. I was able to fix it by unscrewing it a bit. Here is a DIY guide on how to fix your lens in case you have focus issues as well. (of course, this is all very informational, if you end up bricking your lens by following this guide, we are not taking any blame for it)