Thur (B&H): Sigma 14-24/2.8, Interfit Monolight, Tiffen, Kenko

It’s lens day at the Thursday B&H Photo Daily Deals with a Sigma wide zoom leading the pack:

+ Sigma 14-24 f2.8 DG HSM ART for $899 in Canon or Nikon DSLR systems

+ Interfit S1 500Ws HSS TTL Battery-Powered Monolight for $500

+ Kenko Auto Extension Tube for $90 to $100 in your choice of Canon, Nikon, M43rda and Sony E (FF)

+ Tiffen Variable Neutral Density Filter with a $20 mail-in rebate: 77mm for $60 AR, 82mm for $70 AR
+ AR = after the mail-in rebate

PS: no camera-related gear, but there is an Ingressol tools sale among the Thursday offers at the Amazon Gold Box