Tiffen 4 x 4" Water White ND Filter Density:W44ND21 The 1 density provides a

The 1 density provides a greater amount of fog effect than the 1/2

The blue #5 is for blue screen work

Ang asul na memory foam na nakikita sa pamamagitan ng mesh ay para sa mas malamig na temperatura

From there

Tiffen 4 x 4" Water White ND Filter Density:W44ND21 The 1 density provides aThe Tiffen 4 x 4" Water White ND is a solid neutral density filter providing a 4 stop exposure reduction. This 1. 2 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By increasing your aperture or slowing your exposure time, you are able to control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the