whu-1 wrote in post #13115875
The main point of the filter for me is protection, due to the way the filter screws on the impact is dispersed when dropped , protecting the lens body and front lens watch some of the digitalrev videos and this is borne out , but all so for use when paragliding hence alt and on hazy at sea cant hurt .
I once had an Olympus zoom lens, one of the first high quality zooms to exist, way back decades ago. Back then, I too, was under the false guidance that a filter 'protected' a lens to impact damage. FALSE!!! I was in Germany, touring a castle. In tight quarters I turned to my right, causing the camera to swing away from my body and crash lens first into a stone wall. The filter was unscratched, the lens was unscratched, but the zoom mechanism was jammed so that the WA portion of the zoom range was not accessible...my 35-70mm zoom turned into a 45-70mm zoom, until it was sent to Olympus to undo the collision damage internally!
The ONLY 'protection' that any filter provides is a shield against wind blown sand or salt spray hitting the front element, or keeping the reaching slimey hands of toddlers from touching the front element. It MIGHT do some good in keeping a paint ball from striking the front element, by destroying the filter when struck. That is all. The rest of physical 'protection' is purely accidental and not assured!