Which ever you prefer as long as you get the correct exposure.
I should think that ISO 50 shouldn't require a ND filter to get long enough
exposures for that dreamy blur effect. This one was accomplished with
ISO 400 film
at f16. The shutter speed was about 2 sec. ISO 50 would have give an
exposure
time of about 8~15 seconds.
http://www.mindspring.com/~pjalling/PAW_--_Waterfall4.html
Stephen Moore wrote:
O List (with apologies if it's a dumb question) --
Here's a hypothetical situation: I want to shoot
some waterfalls and other moving water using
ISO 50 transparency film, and want to slow the
shutter speed to get a nice blur on the water.
Conventional wisdom says an ND filter (assume
a 2-stop) is how this is done.
So does one meter the scene before or after the
ND is in place, i.e., adjust exposure for the
desired medium tone, put the filter in place, and
then slow the shutter by 2 stops? Or simply meter
through the filter and use the desired shutter speed
(1/4 to 1/2 sec?) as a baseline for adjustment?
Any hints or tips would be appreciated.
Thanks in advance,
Stephen Moore
--
When you're worried or in doubt,
Run in circles, (scream and shout).
