Filters For wide- angles
Because wide- angle lenses take in such a large field- of- view, you need to be careful when choosing and using filters with them. If you pick the wrong type or size of filter you can soon encounter vignetting, caused by the lens capturing the filter ring itself in the frame! What’s more, the bulbous nature of some ultra wide- angles and fish- eye lenses means that specialist filter systems are required to avoid the filter coming into contact with the front element, while keeping the filter holder out of shot. If using screw- on filters, opt for the slimline variety, if available – these feature a thinner filter ring so as to minimise vignetting. System holders, on the other hand, are usually sufficiently oversized to avoid creeping into shot, however you can be limited to how many slots you can have on your filter holder before it gets seen by the lens. Worst- case scenario, you can always crop into your images to avoid vignetting at the very edges.