Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Is it possible to swap out the mounting plates on the atop the head? For instance, something with rod/rail supports?
Document: Both have the small standard bolt for camera sockets. There is a larger bolt screwed into the head just above the tilt lock. You can swap out one of the smaller ones with this one. Can't miss it, its the only silver thing on the head and looks just like the ones on the plates.Overall this tripod is great, those of us with lighter cameras and the ability to use a screwdriver can easily tweek this into a truly outstanding tripod.
Pros:*The legs alone are worth the price! *Heavy and supports my Canon XHA1 no problem. *Pans are nice and smooth. *Gives off a professional look to impress clients. *x2 sliding plates! Plus my Manfrotto 357 Plate fits the head perfectly! *Pretty good carrying bag.Cons:*The head sticks when trying to tilt up and down slowly giving you the snap most cheap heads offer. I've tried all tension settings and I get the same result every time.
Works well as a place to mount my small led fill light.But now I have plenty of lesser tripods like this and don't really need another. So, happy to receive the extra mounting QR plate and happier still to receive a packet of micro fiber cleaning cloth. The quality and quantity are such that I will use them preferentially when cleaning something delicate like a smudged lens.It's nice when a company puts themselves in the shoes of the shooter and provides such a useful bonus for doing business with them.
Much like the AVT Pro, the mini tripod is packaged inside a decently durable bag, and is built fairly solid. To my surprise, the mini tripod stood almost as high as the AVT pro (about 1 ft shorter). For a mini tripod, that was pretty impressive. Obviously, it's not something you would want to put your DSLR on, as the weight maximum on the mini tripod should probably be around 2 pounds. For my uses, it makes a perfect tripod for mounting one of my GoPros.
I don't have access to $100,000's worth of camera equipment, but if i did, i would feel fine putting it atop this tripod.Now the following is not a down-side per se, but it is something to keep in mind if you are looking to buy the right tripod for you - this tripod is BIG, how big is your camera? Most DSLR or even more compact pro-sumer cameras will be dwarfed by this beautiful beast.
This tripod is an excellent deal, for the price you pay you get a really smooth fluid head, the legs are sturdy and it even comes with a mini tripod and extra mounting plate, both of which i wasn't expecting. If you are looking for a nice balance between quality and price then this is it!
There are some comments in the manual about this, but basically it is not true. For this design, once adjusted the bubble should stay in the center.The head uses a very common 75 mm mounting bowl, which makes it interchangeable for a variety of accessories.The handles are a few inches short from what I am used to, but will work for me.
the stickers on the knobs and rubber padding on quick plates will fall off, a small hassle but easily fixable, you can not remove the fluid head
One flaw: the camera mounting plate lockdown screw on the tripod head is badly positioned and cannot turn a full revolution beneath a camera that is even an inch wider than tripod head, like my Panasonic HVX200. So, when I"m out in the field I take the lock knob off, carry it in my pocket and use it like a wrench whenever I have to mount or dismount the camera from the tripod.
These guys could make some bucks with just making bags.If you complain about this weighing too much (about 10 lbs) you might need to see a doctor. The carrying strap is a great bonus. Or you can just spend $600 dollars more for a carbon fiber version because 4lbs difference is so heavy.You (Ravelli) would earn a lot of praise if you made a taller version and added some screw mounts on the side of the head for mounting monitors and other gear.
Answer: I'm not quite sure I understand the question. With the quick release that the tripod comes with on the head, you can attach whatever you want. I usually attach my entire shoulder rig to this tripod.