About This Items
■ Reflex Telephoto Lens (Mirror Lens)
- This lens uses an optical system derived from astronomical telescopes, employing a primary mirror and a secondary mirror.
- Despite its 500mm super-telephoto focal length, the lens is compact and relatively lightweight
- Chromatic aberration is theoretically almost nonexistent, a natural benefit of mirror-based optics
- The aperture is fixed at F8 (no adjustable diaphragm)
- Point light sources are rendered with the distinctive “donut-shaped” bokeh, a hallmark of mirror lenses