It depends on what kind of astrophotography you are focusing on. If your primary goal is super wide angle star fields, then ...

Lomography launches Joseph Petzval Focus-coupled Bokeh Control Art Lens Series for photographers and filmmakers ...

These macro lenses offer outstanding clarity for exploring the tiny world — whether you're photographing butterflies or dewdrops.

Dir: Lina DoP: Lina Format: HD Camera: Canon 7D, Sony HDR-CX760, others Lens: Canon EF 50mm, Canon EF-S 15-85mm, Canon EF 70-200mm Lina: The priority was for staying under the radar.

It becomes almost explicit with the video pointing to an ""F 1.8", which could very well be the aperture size of the lens. This would be good news to mobile photographers if true.