本详细指南适用于对焦环上有螺栓的镜头。到目前为止,我已经测试了跟随镜头的方法,或者得到了确认来自其他镜头所有者:
我在本指南中使用 7artisans 35mm F1.2 镜头。如果您有另一个镜头在对焦环上带有螺栓并且您想尝试校准它,请随时与我联系。
首先,我将定义一些稍后将使用的术语。
对于镜头对焦校准,您将使用适合位于对焦环上的螺栓的相应螺丝刀。如果是 7artisans 35mm F1.2,我使用的是 T3 螺丝刀(但 optim al 应该是 T2)。
焦点未对准通常有两个问题:
步骤 1.将镜头连接到您的相机,将对焦环旋转到最远的位置 - “无限”标记。然后轻轻拧下对焦环上的螺栓,确保在此过程中环没有旋转并且镜头核心没有移动。不必完全拧下所有螺栓,通常转几圈就足以使聚焦环松动。
步骤 2.现在轻轻地将对焦环旋转到更近的位置,例如5m。确保环旋转得非常松,并且镜头芯没有移动。为了获得更好的引导显示,我将松动环旋转到1m标记。
步骤 3.轻轻固定聚焦环上的所有螺栓。确保环没有旋转并且镜头核心没有移动。
Step 4. After all bolts are secured rotate lens to infinity point, you will see that Lens Core is collapsing toward the camera more than before the adjustment.
Use your camera and take some pictures on most wide lens aperture value. Now lens should be able to focus much further. Try how full focusing range works now. If it is still not focusing to infinity, repeat Steps 1 – 4. But if you can focus to infinity and now lens is overpassing it, then simply follow steps from the second guide part below.
Step 1. Connect the lens to your camera, set the most wide aperture value (e.g. F1.2 for 7artisans 35mm ), then find any small and contrast most distant object and precisely focus on it. Take few shots and check that infinity area is perfectly in focus.
Remember the focus ring position (or mark it with soft pencil on the lens body). Then gently lay down the camera on the flat surface, make sure focus ring keeps its position. Usually it will be very small rotation form the “infinity” mark. I’m using more dramatic adjustment for the guide so focused to 1m distance. You can see that Lens Core got significantly extended here. In your case it will extend to very tiny amount.
注意:内对焦镜头内部隐藏了镜头芯(例如 7artisans 12mm F2.8),因此您不会在外部看到任何变化,只需进行下一步即可。
步骤 2.轻轻拧下聚焦环上的所有螺栓。确保在此过程中不要旋转对焦环。也不需要完全拧下螺栓,只需将它们全部旋转几圈,直到聚焦环变得非常松动。
步骤 3.慢慢将对焦环旋转回“无限远”标记。确保镜头核心没有塌陷并且旋转的努力是最小的。
步骤 4.准确旋入调焦环上的所有螺栓,确保调焦环在此过程中不会移动。
现在您的对焦环“无限远”标记已调整到真正的无限远距离位置。
如果您在固定对焦环的过程中不小心移动了镜头芯,并且它没有对焦到无限远,请使用第一个导向部分进行向后调整。
联系客服