Alter RFS: a hinged lens filter adapter

This article was translated from Dutch with the help of AI. Read the original.

If you regularly want to use a lens filter without having to keep screwing it on and off your lens, the new Alter RFS (Rapid Filter System) could be a useful accessory for you.

The filter system consists of a series of adapters to help you do this. They are advertised as the 'first hinged lens filter adapters'.

You no longer screw your lens filter directly onto your lens. Instead, you screw it onto the RFS adapter, which you then screw onto your lens. When you no longer need the filter, you can simply swing it out of the way to give your lens a filter-free view again.

The adjustable 270-degree friction hinge on the adapter ensures that the filter stays out of the way, even if you find that your camera swings around.

The orientation of the adapter can be adjusted so that filters can swing out in different directions. This is useful if certain sides are blocked, for example by an accessory attached to the hot shoe.

An 'integrated light shield' along the edges of the adapter helps prevent light leaks. Magnets are used to keep the adapter securely closed.

The machined, anodised, lightweight aluminium adapters are available in every filter size from 40.5 to 105 mm. In addition to the standard RFS adapter, Alter has also developed RFS+ adapters with an integrated step-up.

The adapters have an average retail price of 79 dollars, but crowdfunding backers can get them with a discount of up to 25 per cent if the company succeeds in bringing the product to market, with an estimated delivery date for backers in September 2019.

» Alter RFS: Rapid Filter System on Kickstarter

Via Petapixel.

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