Klainmeister - No filter, but that's a great idea because I have learned to keep far away from the sun and to shade the lens if I can't. Maybe a ND? And in the case of using Portra during the day, it pretty much has to stay around f16 because the fastest shutter speed is between 1/250 and 1/300. Hmmm. An ND might help to bring in a little exposure flexibility too. I wonder if they can be found in Series VI.