I've recently got a Zenit TTL without a lens, but I bought an adapter so I could just use the Nikon lenses I already had on it. I haven't used it with any film yet, but looking through the viewfinder, unless very close up, everything is out of focus. I've attempted changing the screw that holds up the shutter (as some websites have said), but it only makes a slight difference (even when its out so far it is about to fall out, infinity focus is an arms length away). Firstly, is there any way that I can alter this so the focus is correct and I'm not just using this camera for macro photos? and secondly, if I use the camera with the best possible option I've gotten so far (screw what the shutter rests on so far out that there is a large gap between the base of the inside of the camera and the bottom of the shutter) will the film get exposed? Any advice would be great, and let me know if you need any more information! Thank you!