Focus by wire explained how it works

Lens Focus By Wire And Why It Is A Problem For Videographers

Many new mirrorless camera lenses use ‘focus by wire’ vs the old standard mechanically connection. This can cause major problems for videographers. Normally the focus ring is mechanically connected to the inside of the lens so that when you turn the focus ring some of the lenses inside the lens move directly. With focus-by-wire the…

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