Torture Test: How Will a Protective Lens Filter Affect Image Quality?

Back in the analog days when everyone shot film, it was common for photographers to slap UV filters onto their lenses to help reduce haze in their images. While some photographers still swear by UV filters today, they're primarily used as a means of protection rather than to reduce UV transmittance. Digital sensors in today's cameras are significantly less sensitive to ultraviolet light than film emulsions were. As a result, UV haze is much less of an issue when shooting digitally. Nowadays, pho...