Hello people! Lovely forum you have here I have an Minolta SRT101 from the 1960s. I can tell it's the early model (probably from the first batch) because of the serial number starting with 125xxxx. It's a beautiful camera, and I'm glad I have it at such a young age. From what I can tell hasn't been in repair once. The mirror damper and seals are still there and appear to be in great shape. This thing literally feels like it's gonna last longer than I am. That said there's been some issues recently. First off, I have 4 lenses that go with this thing. 58mm MC-Rokkor-PF f1.4 (the classic one with silver aperture) 50mm MD Rokkor F2 (a backup lens from a newer SRT100x/200 that I had) 28mm MC-CPC F2.8 (not a rokkor but works fine) 200mm MC-Rokkor-QF F3.5 (again classic with silver aperture) The SRT101 has been firing off perfectly for quite some time now. Problem is over time, the 58mm has developed a sticky/stiff focusing issue that makes focusing a royal pain. The ring occasionally slips when i focus away from infinity. To make matters worse, my mirror now refuses to return once I trip the shutter. Mirror lockup also fails to return. The thing is this ONLY happens with this lens on. The mirror only returns when I remove the 58mm lens, or sometimes when i turn the focus ring. I tested with the other 3 lenses and mirror and lockup return works flawlessly. So I doubt it's the camera (although the MC coupling ring on the mount has also started to stick causing a slight delay in metering whenever i increase aperture but i figure some lube should solve that), and more the lens. Can anyone back me up on this? What should I do?