准备买滤镜,请问: c p% A8 Z" a1 S* L
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1. 对ND( neutral density) : ]+ M) T) Q/ Q- D6 w/ R1)是买固定ND滤镜. ND8 $119.99 (in Henry store) 1 m- U+ j# @" l6 z& Z, a& C/ vHOYA 77MM PRO1 DIGITAL NDX8 DMC FILTER 5 `" B$ ] A2 pWebcode: 095DAY0833 w$ N- i5 {8 X0 q3 `
o Fits lenses with 77mm filter mount 4 i& r* q) ]7 T$ Q9 o& R3 [$ }
o For wider apertures or longer exposures % Y3 d5 j+ s0 O3 j; F: k3 e7 A) p
o This ND8 filter reduces the amount of light entering the lens so wider apertures can be selected, which is perfect for portraiture to reduce depth of field ( | o5 O7 P& u) M& b: Q2 x L
还是买: " b9 z( Z- u& m2 |4 J可变ND 滤镜. 从1到8. $119.996 K; | M Z0 D4 O! E% ^1 G- i
· CAMERON 77MM MC FADER ND FILTER/ i4 T0 `9 f* k' k$ h3 @" c
Webcode: 095BOO151; N. `. |- t9 ^
o Adjustable 2 to 400 exposure (fully variable for 1 through 8 stops) 7 P9 z* k. D7 e8 |: V
o Front glass is one size larger to help avoid vignetting$ W, I% ?$ C K0 g
2)是买 drop in (长方形) 还是 screw in (园形)?) m9 d2 k6 a/ \+ u* j
2. 对GND (graduated neutral density)0 I" ?2 ~4 z3 ?0 Y3 ~
1)是买85 mm ( p series) 还是买100 mm (Z series) ?! P0 O4 T( z* Q1 ?3 r
2)是买 drop in (长方形) 还是 screw in (园形)?2 t) W! c( J8 t* q- f