Product 1: Controls highlight flares
Product 1: contrast is lowered, but with less lightening of shadows
Product 1: Creates a soft light pastel effect
Product 2: The effect can be seen through the viewfinder and changed by rotating the filter
Product 2: Filter factor varies between 2.3 and 2.8, according to how the filter is rotated and its orientation to the sun
Product 2: Best results with SLR cameras
Product 2: Designed for lenses specifying a 58mm filter thread size