LUMIX S 50mm F1.8 Lens, L-Mount - Panasonic

The filter size is 67mm.

Yes, the lens is well-suited for video recording, thanks to its smooth bokeh and focus ring control.

No, this lens does not have built-in image stabilization.

The maximum magnification is 0.14x.

Yes, the lens is dustproof.

The lens structure is 9 elements in 8 groups.

This lens is designed for MILC (Mirrorless Interchangeable Lens Camera) cameras.

Ensure the lens is properly mounted on the camera body. Check the focus mode setting (AF or MF) on both the lens and the camera. Clean the lens contacts and try again. If using autofocus, ensure there's enough light and contrast for the camera to focus.

Check the aperture setting. A wide aperture (low f-number) can result in a shallow depth of field, so ensure your subject is in focus. Check your shutter speed; in low light, you may need to use a tripod to avoid camera shake.

Make sure that the lens is not set to manual focus. If autofocus is slow, try using a different focus mode on your camera. Ensure the lens is clean and free of obstructions.

The lens is dustproof, but it's best to keep the lens clean. If there's dust or debris inside the lens, it's recommended to have it professionally cleaned to avoid damaging the internal components.

Ensure the lens is correctly mounted onto the camera. Clean the lens contacts and camera contacts. If the problem persists, try updating the camera firmware.