[Philippe]

因為要光圈大閃燈先夠力.

[micros]

對得準﹐最少焦點清。
你要幾多影深係另一回事。

[peterchan04]

如果用ISO 1000的菲林 要影60m....
======================

我吾係好明 :

1. 要影 60m ---- 即係個樣野 係 60米 (180呎) 外 ? 枝閃燈射程有噤遠 ?

2. iso1000 菲林 (一千度菲林) ---- 用到 f1.4 光圈 重要閃燈.... 乜野環境, 噤特別 ?

[Philippe]

係喎,60m支閃燈跟本去唔到.熄?佢啦.
其實影60m咁遠景深唔會好大問題的,因為對焦距離遠景深會比近對焦距離長好多.不過如果你諗住用咁方法影夜景,一來閃燈唔夠力,二來光圈太大對處理大反差位會好散.最好都係搵支腳架用長快門慢慢影

[Akula]

因為我經常會影一些超過三四百人的全體相，除非你有數支閃燈或支閃燈係60CT1 或 60CT4就可以影到。

[Akula]

講多少少：上次照的大合照大約有六百人，最遠的一行人同相機距離約70米，我用菲林ISO160，11~8光圈，1/15秒。

[Philippe]

離機70米請問你係用閃燈光定係自然光呢?可能閃燈開咗等於冇開

[tyuen]

A single flash of 60CT1 or 60CT4 (without flash extender) is not sufficient as a main lighting of 70m with f/8, ISO160. (An aperture larger than f/1.8 is needed even I assume ISO160 "doubles" the guide number.)

If you shoot under heavy dark cloud (or even sunset condition), f/8, ISO160, 1/15 without flash is possible.

[Akula]

indoor photo, 閃燈光+自然光

[tyuen]

Akula, did you mind any movement of your 600 people? It's not easy to take this shot.

[Akula]

Attach photo link:

Hasselblad Flexbody, 50mm, f11~8, 1/15
2x 60CT4+自然光
[img]http://www.methodist.org.hk/1023/group_photo.jpg[/img]

[micros]

咁o既距離﹐人有少少陏都唔會覺。

[tyuen]

Besides movement, it had to control / check if someone was being blocked. Still, it's not easy for taking 600 people shot.

[peterchan04]

Hasselblad Flexbody, 50mm, f11~8, 1/15
2x 60CT4+自然光
========================

有冇用 slave function ?

[friend_dicky]

應該用射燈。