To convert to actual settings, you may want to refer to my Exposure Value Table. These pictures were taken with increasing exposure times and the lens set at f/8 until the exposure time reached 64 seconds, at which point the exposure time was kept constant and the lens aperture was increased.
I first present the pictures in black and white, to illustrate the brightness levels. Following that is a presentation of the same pictures in color, in which I discuss issues related to the color rendition.
EV 10
As you can see, nothing but the very brightest lights are visible. This is not really a useful exposure unless you're trying to capture the lights themselves, which might be the case if you were photographing a neon sign.
For all that the light is just about the only thing visible, it's
still overexposed; in person, I could make out a bright center circle
inside the square, which is not visible in the picture.
EV 8
Here the things which are well illuminated by the sodium vapor
light on the boathouse are becoming visible (notice the masts, for
instance). This would be the exposure to use to take pictures of
things in bright artificial light, while leaving them dark enough that
it's obviously night time.
EV 6
This shows more detail in the boats illuminated by the light on
the boathouse, but also makes it less clear that it's nighttime if the
picture doesn't include the sky.
EV 4
Here, the city in the background is finally beginning to become
bright enough to be interesting. This is the lowest exposure
I'd use to capture distant lights.
EV 2
Here the sky is starting to become grey instead of black. This
is approximately how the sky and water looked in person, and also
captures the buildings in the distance as they appeared at the time.
Very bright things, of course, are overexposed and have no detail.
EV 0
At this point, things are getting brighter than they looked when
I was actually there. Reflections in the water from several buildings
can be made out, but when I was there in person, only the very
brightest one, from the building with construction lights, could be
seen.
EV -2
This image is also unrealistically bright. Notice that lens flare
has become a problem; I used a lens with low-end coatings for this
picture (a Nikon Series E), so you may have less difficulty, but lens
flare is always something to keep in mind due to the high contrast of
night pictures.
EV -4
Unless you're going for strange surrealistic effects and know what
you're doing, this is simply overexposed.
EV 10
The sodium vapor light looks orange, which is hardly surprising.
You can see a blowup of it,
which shows that it's still too exposed to capture detail which
was visible in person; I could see a brighter circle within the square
fixture when I was there.
EV 8
EV 6
EV 4
EV 2
This is about what the dimmer things, like the sky and water,
looked like in person.
EV 0
Here things are getting brighter than they actually were. Note
that the sodium vapor light is getting so overexposed that it's
becoming more white than orange.
EV -2
The sky is blue enough in this picture that it almost looks like it
was taken shortly after sunset - except that the building lights are
much too bright for that. Here the sodium vapor light is quite white,
which also means that things illuminated by it will appear in full
color, instead of monochrome in the shade of the light. Observe the
distinct red color of the floats as opposed to the white of the hulls,
something which could not be clearly distinguished in the less exposed
pictures.
EV -4
This picture is a bit vignetted, because I opened up the aperture to take it, but ignore that.
The sky is bright enough to be the middle of the day. This much
exposure is suitable only when you intentionally want strange and
unreal effects.
Copyright (C) 2003 by
Terran Melconian.
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