been reading a lot of articles on the web on fireworks but none really answered the questions i asking....this is the reason why i asked the following questions here.
ps: i really go and read up a lot liao.... so pls dun bomb me... hee hee
just that the articles are mostly talking about what to do but dun really explain why and also did not touch on some of my nagging doubts....
question 1 :
just like to check: when would be the best time to close the shutter for a fireworks pic?
do i close the shutter when
a. the fireworks is brightest or
b. when the brightness has all died down or
c. when i finish counting the seconds eg when time is 3 sec if i want a 3 sec exposure?
one website said that must close shutter when fireworks at brightest.
does it matter if i close the shutter when the fireworks is at the brightest or when it is not the brightest?
i mean when i close the shutter, does it capture the last bright scene on the sky or does it accumulate all the lights that has entered the camera?
for instance, would it make a difference if the shutter close when fireworks is brightest compared to when fireworks is not the brightest ? assume that aperture size and shutter speed the same.
if i want the building to be in the picture, eg fullerton hotel to be in the picture, i set focus to fullerton hotel and switched to manual focus to prevent the camera from re- focusing again when i shoot the fireworks.... is this the reason?
if i dun want to have building in the picture, do i set the focus to infinity and aim at the black sky? sorry... checked the manual but it does not seem to say how to focus to infinity?
i set camera to autofocus and at f11 (or to about f16).... and focus on fullerton hotel.... is that focus to infinity?
i look at the lens ring that and see that it is not turned to infinity by the auto focus done by camera. then i switched to manual focus and manually turn ring to infinity.... but now fullerton hotel appear blur...
how exactly do i focus to infinity?
if want buildings in the picture with fireworks and set focus to infinity, will outcome be ok?
if i set to f11 and about 3 sec exposure, this is just about right for the fireworks.... but the buildings in the pic appear to be slightly under exposed....
can i open the shutter 1 to 2 sec before the fireworks appear and use black card to block the lens... then remove black card when fireworks start appearing. i was thinking in this way, the building gets about 1 to 2 sec exposure more than fireworks... meaning buildings get properly exposed and so do the fireworks....
is this thinking right or wrong?
question 6 (last one liao.... sorry):
was standing at shears bridge on last sat. facing fullerton building, but got street lamps on road behind me. problem is when i placed black card over my lens, because the street lamp is behind me, it shine onto my black card. although the black card is of non refractive black material (can see orange light from lamp on the black card), will the shinning of the light on the black card cause the camera to take in more light when it should not? or does it mean that because the black card is non refractive, although i see the light, to the camera, the black card is black.... ?? dun understand... sorry
i know that the best way to learn is to experiment and try... but fireworks dun come everyday, so want to get the concepts right before i go and shoot... guess that is better than go and anyhow whack photos...
"xi er gong ting" (waiting earnestly for advice from anyone)