Got a Irix 15mm f/2.4 Firefly last week, as i’m lacking of Ultra Wide Angle lens since having Pentax K-1. The lens are now available at Pentax2u at the price of RM 1880, comes with Canon, Nikon mount and surprisingly for Pentax K-mount without waiting too much longer as other third party lenses.
On the live-view screen, can see slight vignetting at 4 corner edges. Need to do post-processing when it appear too obviously for some pictures. Below are some photos taken during weekend,