Zeiss Loxia 50mm f/2 Planar Aperture Series “Sunstar Aspen”
Get Zeiss Loxia at B&H Photo.
This scene shows a number of behaviors: bokeh, flare, sunstars, color saturation into a bright light source.
Zeiss Loxia 50mm f/2 Planar: Sunstar Aspen (Sony A7R)
With HD and UltraHD images and large crops from f/2 through f/16.

Quaking Aspen and Sunstar
[low-res image for bot]
f5.6 @ 1/13 sec, ISO 80; 2013-10-26 08:00:35
Sony A7R + Zeiss Loxia 50mm f/2 Planar
Sony A7R + Zeiss Loxia 50mm f/2 Planar
[low-res image for bot]