渐变灰滤镜 GND ; gradient gray filter

渐灰色 gradually gray

渐变灰 Gradient gray ; grad ND ; G-ND

灰度渐变 Gradient Wipe

中灰渐变镜 Grad ND ; ND Grad ; medium gray gradient mirror

渐变中灰镜 Graduated Neutral Density

渐变中灰密度滤光镜 graduated neutral-density filter

反向中灰渐变镜 RGND

渐变灰镜 GC-Gray

反向渐变灰 RGND