Lens filters attach to the front or drop-in slot of a camera lens to change how light reaches the sensor before any editing happens: clear protective filters, circular polarizers that cut glare and reflections, and specialized optical filters used with specific lens and sensor combinations. What a filter changes at the moment of capture cannot always be recreated afterward in post-processing.
Match the filter to the lens's exact thread size or drop-in mount - filters are sized precisely, and a mismatched thread either will not attach or vignettes the image at the edges. Circular polarizers require rotating to the correct angle for each shot to have any effect, unlike fixed-effect filters. For lenses used in demanding field conditions, a protective clear filter is a low-cost way to shield the front element from scratches and dust. COLAMCO supplies camera lens filters for the photo and video programs business, government, and education organizations run.