ND FILTER
ND Filter Light Transparency Determination Table, determined referring to Optical Density transparency, Filter Factor or light reduction rate (F Stop Reduction)
Jadual Penentuan Ketelusan Cahaya ND Filter, ditentukan merujuk kepada ketelusan Optical Density, Filter Factor atau kadar pengurangan cahaya (F Stop Reduction)
Example: If ND32 x ND 32 = 1024, therefore ND 1024 = ND1000 or Big Stopper the light reduction rate of ND 32 is 5 stops so X 2 = 10 Stop (ND 1024).
Filter Factor must be multiplied (X), but the F Stop value must be added (+)
Filter Factor ND32, F Stop value is 5 Stop
In theory ND Filter can be installed or combined in overlapping, but in practice when taking pictures it is not encouraged, because light will fill the space between
Contoh: Jika ND32 x ND 32 = 1024, oleh itu ND 1024 = ND1000 atau Big Stopper kadar pengurangan cahaya ND 32 adalah 5 stop jadi X 2 = 10 Stop (ND 1024).
- Filter Factor kena darab (X), tapi nilai F Stop kena campur (+)
- Filter Factor ND32, nilai F Stop adalah 5 Stop
Secara teori ND Filter boleh di pasangkan atau digabungkan secara bertindih, tetapi di dalam praktikal ketika mengambil gambar adalah tidak di galakkan, sebab cahaya akan mengisi ruang di antara dua kepingan ND Filter dan akan mewujudkan kesan kebocoran cahaya (Light Leaking).
