I recently bought a Fujifilm XF 35mm f2 lens, specifically for its Weather Resistance. I have owned a copy of this lens previously, but didn't like the 'digital' appearance of the images. This time around I am using it with no in body sharpening, and have also put a Tide Optics CineSoft 1/4 strength filter (£39.95 from Amazon in the UK) on the front of said lens. I have noticed no degradation in image quality due to the filter! I have not used it in sunny conditions yet, I prefer to use my 18-55 when there is no threat of rain!