>>3304993Yeah, it is the front element of a destroyed, "DeJUR 85-210mm Macro No. 121310" including the helical focusing mechanism. I put a 12mm macro extension tube on it, to get it the correct distance from the sensor, and it focuses from about 6' to infinity. I JB Welded a reverse ring on it to use as a mount for the camera. Here's what it looks like with a few example pics.
The other lenses & pinholes used ITT can be seen in the links in
>>3302022>can i do the same with some shit 135mm 3.5 i found?Most likely, yes. It will all depends on your camera's Focal Flange Distance (FFD) and the Focal Length (FL) of the lens. If the FFD is longer than the FL then you'll only be able to do macro with it. If the FL of the lens is really long, a macro bellows will be perfect for focusing to infinity and how ever close the bellows will allow.