Very Stiff focus ring In Ai-s Nikkor 85mm 1:1.4
1:16:06
Cleaning lens elements In Ai-s Nikkor 85mm 1:1.4____it turn out to be okay
1:10:41
Oil on the aperture blades In Ai-s Nikkor 135mm 1:2.8
1:00:53
Stiff focus ring in outer focus helicoids in Ai-s Micro-Nikkor 55mm 1:2.8
20:41
Nikon Nikkor 85mm f/1.4 : Disassembly and Cleaning
18:46
STOP using the wrong APERTURE.
54:37
Stiff focus ring in Mamiya-Sekor C 1:3.5 f=35mm ASSEMBLE
1:04:40
Cleaning lens element's in NIKKOR-S AUTO 1:1.4 f=50mm
1:12:29