The R3 and R4 series are uniquely designed to satisfy many needs.
They can be used for still photography - with big cameras and large lenses

plus, by changing the mounting plate, they can be converted into high
quality tripods for video cameras and DSLRs with digital video capabilities.

Perfect for still and video camera systems
R3, R4 Series tripods have a unique mounting platform that can
accept a wide range of mounting plates, bowl adapters, leveling devices, etc. for use with professional film and digital SLR and video cameras. This approach lets you quickly exchange plates with different cameras or heads (ball head, gimbal, etc.) already attached.

The center column-free design allows you to get as close as 3.5 inches (9cm) to the ground for low angle or macro shots!

Built for heavy equipment
The R3/R4 series is especially well suited for use with large,
heavy telephoto lenses - for photographing birds
and other forms of wildlife.

It is also an excellent choice when shooting
with high quality, professional video equipment.

Total Flexibility
R3/R4 Series tripods offer outstanding flexibility. You can use these tripods for DSLR, medium and large format and video cameras. The flat mounting plate can be easily exchanged with a wide range of adapters for various shooting applications.

R3/R4 Series tripods have the largest diameter leg tubes in the SIRUI lineup. With a maximum diameter of 36mm, they have a maximum load capacity of 44 lb. (20kg) - ideal for heavy cameras and telephoto lenses!

Features
1. Unique design of R3/R4 allows you to change mounting plates for different applications
2. Built-in bubble level helps make horizontal adjustments fast and easy
3. For speed and convenience, each leg has an automatic leg angle lock mechanism
4. 2 position leg angle for uneven terrain
5. Retractable spiked feet for outdoor photography