parfocal

3 года назад

This video explores the parfocal capabilities of the Olympus 12-200mm lens. The creator tests the lens with a Nucleus-N controller, demonstrating how it performs with a larger zoom lens. The video showcases the lens's ability to maintain focus while zooming, highlighting its potential for specific shooting scenarios.

2 года назад

The video explores the possibility that some mirrorless lenses use a focus-by-wire system to mimic the behavior of parfocal lenses. The presenter examines a Tamron lens and observes that while it appears to be parfocal when zooming slowly, it loses focus when zooming quickly. This leads them to believe that the lens's autofocus system is electronically compensating for the zoom, creating a near-parfocal effect.