A brain damaged noob writes –
what is the difference in use between a pendulum and a picavet? ie the FAB of each solution.
Turns out ‘FAB’ means ‘features, advantages & benefits’ so the following might be a FAB study of sorts:
They both work equally well. I use both depending on weight- Picavet for lightest weight of rig, pendulum for ‘robust’ situations.
Pendulum: a basic form is simple to make and use but can be awkward to pack. A Pendulum needs a pivot and its length needs to match the load. A simple wire or string can act as a pendulum.
Picavet: light weight, compact. Can get expensive if you use miniature pulleys*- can tangle. A Picavet likes a bit of weight to work well- vey light rigs can stick & bounce about on a Picavet.
With enough weight to overcome the resistance of the pulleys a Picavet works well. The longer the Picavet lines the better (up to the length of my arms anyway). Keeping the thing tidy is important, given half a chance it will tangle into a useless lump of string.
An A5 box will take a Picavet rig with a folding cross:
Pendulums are easy to manage but can be bulky items. I make sure they are never longer than I can hold and keep the rig clear of the ground.
Very light rigs don’t work too well with a Picavet. A pendulum does better: this example (above) by Peter Blackmore has a flexible joint acting as a damper.
A pivot bar from plastic L section makes a good base for a pendulum suspension:
I use 5 rigs for different capture methods in different conditions: