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Greetings, I wonder if someone could help me with pinpointing the problem. I am new Sony user (long time Canon user). Bought secondhand A6000 and used it for a few days with M42 to NEX adapter, since I have M42 lenses in abundance. Today I received 18-55mm F3.5-5.6 OSS lens, wanted to compare it to Canon lens kit, and to tell you truthfully it is splendid little lens, much better than Cannon 18-55 lens. Until it kinda stopped working. Auto focus became very strange, it either not working with lens fully opened (motor is not working), or I can hear motor working with big F stop, but it is not focusing accurately. Web search didn't gave me enough relevant result, so I would be very grateful if someone here could tell me what could be the problem, with camera itself or the lens. Only thing that I have tried is to reset camera setting, but that didn't helped. Any ideas? P.S. No one of my friends is using Sony, so I have no access to another lens to try, or another camera.

Hello everyone, I am experiencing an issue with my new Samyang AF 35mm F1.4 FE lens on my Sony a7R camera, and I am hoping someone here might have encountered something similar or could offer some advice. Whenever I take long exposure photos with this lens, I notice dark shadows and shapes appearing in the images. This happens even when I am not using the lens hood. The issue is not present or noticeable during shorter exposure shots, but it becomes quite apparent with longer exposures. Here are the steps I have taken to troubleshoot the problem: I have tried shooting with and without the lens hood, but the issue persists. I have ensured that the lens is securely attached to the camera. I have checked the camera sensor for dust or damage, and everything appears to be fine. The problem only seems to occur during long exposure shots. Since the lens is brand new and this is the first time I have used it, I am concerned that there might be a defect. Has anyone else experienced this issue with this lens or any other lens? Any insights or suggestions would be greatly appreciated. Thank you for your help! Best regards,