Asahi S3 Extension Tube Set brand_Gitzo The shutter speed dial is

The shutter speed dial is a bit stiff

Includes USB cable and a DVD of Silverfast scanner software

and works great

The Jobu Design QRR125 is a good quality

The Canon Sure Shot Classic 120 is a compact point-and-shoot camera with autoexposure

Asahi S3 Extension Tube Set brand_Gitzo The shutter speed dial isThe Asahi S3 extension tube set includes three M42 thread mount extension tubes: roughly 9mm, 19mm, and 29mm, for a total of about 57mm extension when combined. These a re manual tubes: there is no stop down mechanism built in. In excellent condition, with light cosmetic wear, including a small scuff on one tube which does not affect function.