![]() Once in position, the holder can accept a series of ultra-thin filters that connect magnetically and which clip into place to prevent accidental rotation. These come in sizes from 82mm to 95mm, and the 82mm unit comes with adapter rings to allow it to fit on lenses with threads from 67mm. The system employs a MagRota holder that screws directly into the lens. Velium is new on the scene here and has produced a MagRota system that it intends to aim at still and video shooters. ![]() 2-part 2-5 stop VND comprising polariser and VND element.Velium MagRota VND Basic Kit contents (82mm): This collection of magnetic and push-on systems aims to take at least some of that stress away, and by doing so to encourage us to use our filters on those occasions when we mightn’t be bothered to go through an awkward, fiddly process. Sitting at your kitchen table screwing filters on and off the lens might seem simple and straightforward, but when you are up a hill on a windy day, or desperately trying to capture the moment before the sun disappears into the sea and the tide goes out, marrying the thread of a filter to the thread of a lens can feel like the last thing you want to do – and it will take at least twice as long to get the filter to bite as it did in the kitchen. The idea of using magnets in filter systems is to make attaching and un-attaching them quicker and easier. We’ve reviewed the Kase Wolverine and Revolution Magnetic Circular systems already, so now it’s time to look at some other manufacturers using the technology, if in slightly different ways. I believe H&Y was the first company to introduce filters that connected to a holder using magnets, and now suddenly everyone has had the idea. It seems absurd then that photographers have had to wait until 2020 for Sigma to invent the magnetic lens cap, and almost as long for filter manufacturers to introduce a screw-free way to connect their products to a lens and to each other. Since then, magnets and the theory of magnetism have been used to further civilisation in an incredibly broad range of areas, from televisions, to computers, bank cards, alternative medicine, APS film and colourful holiday mementos to stick on the fridge. The ancient Greeks discovered magnetism 600 years before the birth of Christ when they noticed that the naturally magnetised lodestone attracted iron, and by the 12th century the Chinese were using lodestone needles to navigate their way around their part of the world – and some parts belonging to others. Any company attempting to make filters quicker, more convenient and easier to use has Damien Demolder’s vote, as he rounds up the latest magnetic systems.
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