B&H Photo Video has a one-day deal on the very popular Rokinon 14mm f/2.8 ED AS IF UMC Lens for Sony E-Mount for $249.00. This lens is regularly $329, this is a 24% savings.
The Lonely Speck calls this “arguably the best, most affordable lens for astrophotography”. This deal is available today only or until sold out. Canon, Nikon, Pentax, and Sony E mounts are available.