Review on 📸 Movo Photo AF Macro Extension Tube Set for Micro 4/3 Mount Mirrorless Camera System (Compatible with Olympus Pen, Panasonic Lumix, Blackmagic Cinema Camera) - 10mm, 16mm, and 21mm Tubes by Jeremiah Vishwasrao

Works as advertised. FYI, with a Lumix 14-140 lens, the whole stack can get about 1:1 with about 3/4" from the front of the lens to the subject. The most useful option for me is just a 21mm tube to be used with a 14-140 lens. This gives approximately 1/2:1 with approximately 4" to the front of the lens at 140mm. Manual focusing with the camera's digital zoom setting is useful for setting distance limits and using the distance indicator the camera to focus. Otherwise you won't know which direction to move if the auto focus can't be locked. After that, auto focus and auto exposure will work fine. Tip: You need a good tripod, good lighting, or both.