The Leofoto DM-47 is a round Arca-type clamp measuring 1.85" in diameter. It features a native 3/8"-16 threaded mounting hole at the base and comes with a 1/4"-20 bushing adapter.

Round Arca-Type Clamp    1.85" Diameter    3/8"-16 Female Thread at the Base    Includes 1/4"-20 Bushing Adapter

Related Questions and Answers

Q: 1. Has the screw knob for the "arca clamp" had its stem shortened? From your product images it appears so.

A: The knob on the clamps for Sunwayfoto Macro Focusing Rail with Screw-Knob Clamp is 26mm long. It looks like the image was taking on an angle which change the perspective of the knob.

Q: 2. Will this fit the Manfrotto 494 Ball Head?

A: No, the Really Right Stuff B2-FAB 38mm Screw-Knob Clamp will not fit onto the Manfrotto 494 Center Ball Head with Universal Round Disc Mount.

Q: 3. Can this Sunwayfoto DDC-60L be mounted on top of a Bogen/Manfrotto hex shaped plate to convert my three way head to use Arca-Swiss type plates? Many thanks.

A: Yes, simple screw your hex plate to the bottom of this clamp.

Q: 4. Is a mounting plate included?

A: No, the Sunwayfoto Macro Focusing Rail does not come with a quick-release plate/mounting plate.

Q: 5. Hi! If this is mounted vertically on a copy stand (for use as a "microscope" setup), would the action be smooth and precise, even at 4x magnification? It would be a working distance of about 10mm from microscope objective to subject. This would be a ≈5lb. camera/lens setup attached to this rail. If this isn't a suitable rail, could someone recommend one that would work well? Thank you!

A: Because it is a heavier camera and lens set up, I would probably not use this one unfortunately. The one that I would trust the most would be the following: https://www.bhphotovideo.com/c/product/554343-REG/Manfrotto_454_454_Micrometric_Positioning_Sliding.html Due to the fact that you can screw down a tension knob that very securely locks it into place. This would be the strongest one that I would recommend for a setup such as yours.

Q: 6. Does this come with any mounting screws?

A: Yes. Unit come with the following 1/4"-20 Adapter Bushing M6 Slot Screw

Q: 7. Does anyone know if the the Varavon Armor GH4 cage will slide into this?

A: No problem. Perhaps all four edges of the dovetail plate are undercut, I'm not sure from the pictures. If they are all undercut then you could use the sunway clamp or any other clamp with no problem. Maybe if you pose that question to people who have purchased the cage and they could confirm. Regards.

Q: 8. where is this item manufactured?

A: According to the information in our system, the Sunwayfoto Macro Focusing Rail with Screw-Knob Clamp is manufactured in China.

Q: 9. Is it compatible with Sunwayfoto DP-26? Do you a photo with this two assembled?Is this a good choice to use a small snapshot (Nikon aw120)? or do you have a better one? (the plate and the base)Thanks

A: Yes, the Sunwayfoto DDC-26 Mini Screw-Knob Clamp is compatible with the Sunwayfoto DP-26. Unfortunately, we do not have an image with the two items assembled. These two products will be a great choice for a compact camera system such as the Nikon AW120.

Q: 10. Im looking at installing this screw clamp (Sunwayfoto DDC-50L) on a RRS BH-40 ball head. The RRS ball head stem has two tabs or ears where it mates with the plate. Does this plate have notches for this and will it bolt to the stem of the RRS BH-40 ?

A: The Sunwayfoto DDC-50L does have ears on it's base. Most likely it will fit the BH-40. However, we cannot guarantee it.