Number of aperture blades: 9 Circular aperture (150mm: F4.5-8, 450mm: F5.6-8). "HD Coating" that enhances depiction performance. Uses a unique high-performance multi-coating "HD Coating". Compared to conventional multi-coating, it has less reflection and higher transmittance, so it suppresses the occurrence of ghosts and flares even under severe lighting conditions such as backlight, and achieves high-contrast and clear images.
eBay