I put this adapter in front of my Nikon taking lenses. Basically I have a hard time getting any subject focused. Despite what I read or my impression of what I read, this adapter is supposed to work best with longer lenses. Not my experience. I have tried my 50mm and 105mm lenses. And it's just impossible to focus at any distance. The image just goes blur and won't align. The only exception is my 28mm AIS f/2 lens. For some reason, I am able to focus with this image taking lens, I mean not great but better than any lens I have. The camera I use for this is my Nikon D7000 camera which is a cropped 1.5x sensor. I applied my hack to it so it has a higher bit rate. I think the hack site is down or forever gone so I don't know nor do I remember what exactly the hack is. I don't know the upside of the hack. The downsides are the file is bigger and I can't play the footage on the camera.
I got this Optex thing a while back and I really think it's border line garbage for my intended anamorphic use as I can't really focus on the thing, not on center not on the edges, not with most lenses. It doesn't work well with my D810 full frame at all. The only combination that works is the D7000 and 28mm f/2 lens. And even that it's not great. The image is a bit fuzzy and there is no detail to speak of. I don't remember how much I paid for it. But I think it is much less than the real thing or even comes close to the more popular model. So perhaps the price is fair.
The video software that can desqueeze the footage and I have experience on are Final Cut Pro X, Hand Brake and DaVinci Resolve. I mean I got it to work without fully understanding how it works.