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. 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. It seems absurd then that photographers 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.
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. We’ve reviewed
