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What are the advantages of autofocus and manual focus lenses




Manual focus lens selection generally has the following categories:
The old lenses used for mechanical cameras in the film period are now relatively cheap (except for the collection type), much cheaper than the autofocus lenses of the same specification, although they can be used, but the lens design (resolution, dispersion , distortion control, etc.) have lagged behind the times, if the budget is limited, or you want to experience the so-called feeling of the old lens (metaphysical theory), you can think about it, and it is not expensive anyway. Special purpose lenses, such as the lenses made by Zeiss for Nikon (Otus, Milvus series, etc.) are all manual focus. These lenses have high specifications and high prices. If you pursue the ultimate optical performance, you can think about it; There are special lenses for reentry lenses, technical cameras, and large-format cameras, which ordinary people cannot use.

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The lenses of the Leica M camera system, the M series are all autofocus. Manual focus lenses can indeed experience the fun of manual focus, and sometimes it is necessary to use manual focus for shooting, such as macro photography, when the foreground is cluttered and disturbed, or when the focus point is a solid color, etc. At this time, autofocus is not necessarily good. And the price of manual focus is also cheap, when you have a limited budget, or you just want to experience the "feel" of an old lens, you can think about it. After removing the above elements, manual lenses are not recommended. The old lens and the new camera body are not very good in terms of resolution, lens correction, operation feel, anti-shake, etc., not to mention the shooting of news, sports, animals and other themes. If it's just to experience manual focus, basically all automatic lenses have a manual mode.