Post count: 2157

Yes, we’ve had tests with certain types and models of UV filters on a 100-400 which made it look as if you used plastic soft-drink bottl eas a lens (seriously) I use Skylight 1B filters as protection when working outside in dusty conditions or at seaside, tend to just keep them on my lens. Don’t skimp on filter quality, and test it with your lens for influence on IQ before you buy. You can do a search here for previous discussions on this topic.