| Author | Message | ||
     Rick_oleson Tinkerer Username: Rick_oleson Post Number: 753 Registered: 07-2006 Rating: N/A |
All split image prisms will black out when the aperture drops below the design limit of the screen - this is usually around f/5.6 or f/8. I can't speak specifically for the Nikon K3 screen. Some screens are designed with a shallower prism wedge to delay blackout to a smaller aperture ... the price of this is a less precise split image, so it is done only when considered necessary for use with slower lenses. |