Cheap lens for the gh5 autofocus features

Started 3 months ago | Discussions thread
evetsf Senior Member • Posts: 1,275
Re: Cheap lens for the gh5 autofocus features
2

Marty32 wrote:

Too slow ? Do you mean it will be slower than manual focus ?

I'm thinking about using a gimbal or steadicam of some sort, that's why I'm considering auto-focus.

No, he's talking about the lens maximum aperture. In still-photo jargon, a "slow" lens has a smaller-diameter max. aperture, and so needs a longer (slower) shutter speed at the same ISO compared to a larger-aperture lens.

Possibly not as important for video, where shutter speeds are usually quite slow compared to stills.

Steve

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