Motion Blur
- Thread starter mrwall
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- Chris
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Just a quick edit - all i did was use the motion blur action in Photoshop
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- Chris
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you'll need a slower shutter speed and good panning technique .
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- Frank
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You need a faster car. The amount of background blur you get depends (in part) on the amount of side-to-side movement of the camera (panning) there is during the exposure. With a very slow car you need a very long exposure to allow the camera to move a resonable distance. Your exposure of 1/25s wasn't enough to get a lot of blur.
There are two ways you can fix that - keep the car slow and use a longer exposure time, or use the same exposure time and speed the car up so that it moves further in 1/25s. The problem with option 1 is that it becomes more difficult to track the moving car by panning the camera. You'll have some wobble that will blur the car. Panning to keep on a fast moving car is still not easy - but it's a lot easier that a slow-mover.
When the cars are moving really fast then you can use faster shutter speeds - this is with 1/180s.
There are two ways you can fix that - keep the car slow and use a longer exposure time, or use the same exposure time and speed the car up so that it moves further in 1/25s. The problem with option 1 is that it becomes more difficult to track the moving car by panning the camera. You'll have some wobble that will blur the car. Panning to keep on a fast moving car is still not easy - but it's a lot easier that a slow-mover.
When the cars are moving really fast then you can use faster shutter speeds - this is with 1/180s.
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- Anthony
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Nice edit.
OP you were also shooting in Aperture Priority which is fine if you are watching the shutter speed, but i'd* whack it in shutter priority and then you can play around with what sort of shutter speed you need to get what amount of blur
Waht we want to demonstrate here is velocity, and what is velocity? distance over time!
We can play with the time and we can play with distance. Well, a faster car will cover more distance, or a slower car can cover the same distance but it just takes longer but if we then increase the time we can get the same look as the faster car.
Sorry, my descriptions are a bit wooly but basicly a car doing 20mph and you taking a shot at 1/40th will give the same amount of blur as a car doing 10mph with a 1/20th second shutter
*Actually I'd shove it in manual
Waht we want to demonstrate here is velocity, and what is velocity? distance over time!
We can play with the time and we can play with distance. Well, a faster car will cover more distance, or a slower car can cover the same distance but it just takes longer but if we then increase the time we can get the same look as the faster car.
Sorry, my descriptions are a bit wooly but basicly a car doing 20mph and you taking a shot at 1/40th will give the same amount of blur as a car doing 10mph with a 1/20th second shutter
*Actually I'd shove it in manual
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Digital cameras embed all that information into each image in what's known as Exif. There are several plugins for web browsers that enable one to access that info. Opanda do a good one.