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| This is a star trail, many images stacked together. |
For this week I want to talk a little
about long exposures and what exactly does that mean. The first thing I want to
cover is what a long exposure means, typically a long exposure if when you have
your shutter open for a longer period of time and you need a tripod to keep the
camera from shaking to get a crisp image. You would use this technique if you
wanted to capture water but you didn’t want to freeze its motion, you wanted to
capture it while it was moving. In doing so you create this very silky look to
the water. No if you where photographing you scene and it turns out you have to
much light for the amount of time you want to leave the shutter open then you
might need to ad what they call a Neutral density filter. These filters help block the light from
reaching the cameras sensor and therefor allow you to leave the shutter open
for longer periods of time. There are
many different amounts of light that these filters block all the way up to one
that blocks 10 stops of light. With a 10 stop filter you can leave the shutter
open for minutes at a time without over exposing the image. The result on water
would give it a very smooth spot where all the water is. For some things you
don’t need the ND filters but when you decrease you shutter speed and you
increased the F stop to where you want it and there is still to much light
making the image over exposed then you need to get your ND Filters out.
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| Long Exposure and Sea Isle City, NJ |
There are many different things you
can shoot besides water. I like to shoot moving objects like speeding trains.
Even speeding cars on a freeway. At might with a long exposer you could capture
the cars lights going by . You can be very creative with your long exposures
and make them a very art like image. I have shot water fireworks, moving
objects all with a long exposer. Some of my images are below. For more tips
feel free to ask questions. I would love to see some of the images you have
created.
TBT Thursday Ambassador.
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| Another Sunrise image in Sea Isle, NJ |
