hi, referring to your comment on the 20mm f4 thread....
"*UPDATE, 27SEP2016: The same lens hood that did not cause problems on APSC did vignette significantly on the K-1. I'd like to hear any suggestions for an alternative lens hood that will work on this lens without vignetting!
Read more at: https://www.pentaxforums.com/lensreviews/SMC-Pentax-M-20mm-F4-Lens.html#ixzz5YF8QSdHf"
Maybe this hood could fit...
Sensei 49mm Screw-on Tulip Lens Hood LHSC-49 B&H Photo Video
According to the B&H product description:
Product Highlights
Fits Lenses with 49mm Filter Size
Designed for Internal Focus Lenses
Blocks Stray Light
Prevents Flare in Your Images
For Lenses Above 20mm (35mm Format)
For Lenses Above 15mm (APS-C Format)
Threaded Mount with Locking Collar
Tulip Shape Prevents Vignetting
Regards, Josep
Guestbook 
Ahhhhh how time has passed! Hello again ! I'd still LOVE one of the yellow Pentax bodies. The past few years that I've been missing have been.... interesting. Lets put it that way. I'm going to make a post in a bit about what's been going on.
