Review on 📸 Neewer All Metal Wormdrive Macro Focusing Focus Rail Slider: Close-up Shooting Plate for DSLR Cameras, Tripod Ballhead - 115mm Adjustment, 1/4 inch Screw Head, Arca/RRS Lever Clamp Compatible by Rita Lenora

This focus stand is sold under different brand names at different prices. I chose Neewer because Neewer seems to be trying to create a brand name and thus be able to introduce some quality control into their offering. PREPARATION AND FINISHING The fit and finish of my unit is excellent. There is no play between the tripod body and the worm gear or in the camera mount when it is attached to the camera. (It's not a worm drive. The mechanism is a simple lead screw.) Some reviews here report some sort of backlash. I don't understand how this is possible since the follower is locked inside the squad's body. I suspect these checks are of a different type, maybe a 2-axis focus guide. There is also no play in the camera mount, but this is less important as it presses against the camera when in use and definitely prevents play. USABILITY OUT OF THE BOX Not very good at first. But we will fix it. The big red camera screw is covered inside with VERY thick silicone, almost glue. It was relatively easy to set up my DSLR, but EXTREMELY difficult to take it down again. It's possible that the driver and screw are made of the same material, since it's difficult (out of the box) to turn the red knurled knobs on either end to move them. Push down the track. The red knurled end knobs themselves are extremely rough on the outside edge of the knurling. Your fingers will hurt soon. FIX 1 - Knurling: Simply file the outside of each handle. If you look closely at my photo you can see a thin, shiny bit at the end of each button where the red anodizing was sacrificed during the rounding of the end of each button. 2 - Camera mount slime: The unit comes with a 3mm allen wrench that fits the two capscrews that attach the mount to the stand body. It's probably not the best hex wrench and these bolts are SUIT so I used a decent hex wrench from Husky's metric hex set. Once you have removed the body of the mount, you can simply push out the large diameter red tripod knob/screw. They will then wipe away the very thick, sticky mucus. This requires some effort, especially around the protrusion on the bracket and in the corresponding notch in the red handle. Just so that no residue forms, I put a drop of machine oil in the recess before reinstalling it. 3 - Adjusting screw fixed: pusher has 4 head screws. You access it after removing the camera mount by sliding the pusher to the end of the mount (right side in my drawing). These screws require a 2.5mm hex wrench. The resistance at the pusher seems to be created by simply pinching the screw - I'm not 100% sure on that, but read on. caused the linkage to move slightly through the red knobs - with no play between the linkage and strut body. It's not slack enough for the pusher to move on its own when you point the camera up or down. - exhaust plate.)