Wanted to order a solar film but Amazon is out of stock and not sure if they'll get them in stock by the time of the eclipse. Found these on etsy but don't know what size I need: 50mm, 90mm, etc. Anyone have a clue which one to get for that camera? Thanks! Here's the one I'm looking at: Safe Solar Eclipse lens Filter for Cameras - 50mm. Uses AAS "Reputable Vendors of Solar Filters" Thousand Oaks Film.