Why do older camera lenses have faster F-stops?

Started Apr 14, 2013 | Discussions thread
EinsteinsGhost Forum Pro • Posts: 11,977
Re: Some suggestions

vjk2 wrote:

Yeah, an informal test on an old manual lens, it seems that focusing is easier at larger apertures and you have more room for error.

I wonder if possibly another factor is that AF might not be as capable of as fine focusing control. When I've set my digital lens on MF mode, it simply doesn't feel as precise as a manual lens, and it doesn't feel like you have as much fine control.

I shoot with manual focus, a lot. I have seen older lenses that are a pleasure to use, and then some that aren't. Likewise, MF isn't really an issue with most lenses designed for AF, but that is changing with the new drive-by-wire lenses.

As far as larger aperture goes, I haven't really cared for anything faster than f/1.4 at any focal length but AF or MF hasn't really been an issue.

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