Panasonic Lumix G 20mm F1.7 II (H-H020A) - Banding

Started Aug 6, 2013 | Discussions thread
Anders W Forum Pro • Posts: 21,468
Re: Panasonic Lumix G 20mm F1.7 II (H-H020A) - Banding
1

peevee1 wrote:

s_grins wrote:

Spring inside the lens is a pure mechanical with the purpose to eliminate flex between moving parts

If the spring is connected to (just touches) the ground of the electrical parts of the lens (and it probably does touch them as it is a common design to have ground wire everywhere), then electrical current flows through it, and if the current is alternating (as 100% the case with signal wires), it generates electromagnetic field.

The spring touches nothing but plastic. The innards of the lens are mostly plastic so there isn't ground everywhere.

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