The file 'SMC PENTAX-A 50mm F1.7 Square Lens Hood 3D Printer Model' is (stl) file type, size is 131.6KB.
This is a square lens hood for the pentax 50mm 1.7. Made from USHL.
It is made to not vignette on full-frame SLRs.
Print with the threads facing up, there is no need for supports.
