PENTAX-M 1:1.4 50mm Cleaningしてみた
21:34
Restoration of old treasure vintage lens - Pentax SMC 50mm f/1.4
22:03
Helios 44-2 fungus cleaning tutorial
11:30
smc Pentax-m 50mm f1.4【分解編】
24:08
Manual Zoom lens Disassembly (Third Party) Quick Guide
31:29
SMC PENTAX 50mm F1.4 cleaning, disassembly (Vệ sinh lens Pentax 50mm F1.4 SMC)
15:18
Cleaning Lens Fungus/Fungi of Nikon 18-105mm
15:52
펜탁스 50mm 1.4렌즈 분해 영상(smc PENTAX-A 50mm F1.4 Lens repair)
21:53