I wanted to look into a super wide angle primarily for landscapes, and maybe the rare occasional astrophotography.
I'm contemplating between this
http://voigtlaender.com/10-mm-f-5%2c6-hyper-wide-heliar-e-mount.htmlAnd this
http://voigtlaender.com/15-mm-f-4%2c5-super-wide-heliar-e-mount.htmlI'm unsure which one to go for.