https://www.haoyuanlens.com/manual-aperture-control-professional-zoom-lens-the-new-favorite-of-professional-photographers-the-id/

1 Focal length adjustment flexibility:

The focal length can be manually adjusted from wide Angle to telephoto to meet the needs of different shooting scenes.Creative space for more composition and perspective.

2 Aperture control:

Aperture size can be manually adjusted to control depth of field and exposure.

A large aperture can blur the background, and a small aperture can increase the depth of field.

In low light, exposure can be improved by increasing the aperture.

3 Creative Control:

Manual operation provides more creative freedom.

Users can flexibly adjust the aperture and focal length according to shooting needs.

For photography enthusiasts to learn and explore photography skills.

4 Reliability and durability:

The mechanical structure is relatively simple, the failure rate is low, and the service life is long.

It is also more reliable when working in harsh environments.