It's not easy to adjust them or get the insect to stay put, but if you want to create a focus stack or just want to predict the focus level, this is great. The adjustment is fixed and can be done in small steps. I bought this after having another one that also moved from side to side (but didn't hold the position). I recommend this model as durable and easy to use.
Canon EOS 6D Body camera, black
115 Review
Flexible Tripod Stand For Small Cameras: Acuvar 6.5-Inch Bendable Tripod With Microfiber Cleaning Cloth
33 Review
Lightweight Aluminum Travel Tripod For DSLR SLR Cameras And DVs Up To 75 Inches With Carry Bag - Compatible With Canon, Nikon, Sony, Olympus And More.
15 Review
1K Ball Head By Joby: Boost Your Camera'S Stability And Maneuverability
14 Review