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AlanM
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Joined: 31 Jul 2007
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Location: Glasgow
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 Posted: Fri Jul 18, 2008 7:50 pm Post subject: Harris Shutter Effect |
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| Wikipedia wrote: | The Harris Shutter is a bit of a misnomer, being a technique, rather than a piece of photographic equipment.
The effect is produced by re-exposing the same frame of film through Red, Green and Blue filters in turn, whilst keeping the camera steady. This will generate a rainbow of colour around any object that moves within the frame. Some good candidates for subjects include waterfalls (pictured, right), clouds blowing over a landscape or people walking across a busy town square.
Traditionally, the technique is either achieved using a camera that allows in-register multiple exposures, and changing filters on the front of the lens. Another alternative was to make a drop through filter that consisted of the three coloured gels and two opaque sections that is literally dropped through a filter holder during exposure.
With the advent of digital photography, the process has become a lot simpler -- the photographer can simply take three colour photographs on location, and then use software to take the Red channel from one exposure, combine with the blue and green channels from the other two photos to good effect -- this even allows for correction of movement if the camera is inadvertently moved between exposures.
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My first attempts
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wee minx
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| Posted: Fri Jul 18, 2008 9:16 pm Post subject: |
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I like that 
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AlanM
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| Posted: Fri Jul 18, 2008 9:24 pm Post subject: |
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thanx Minxy
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Doorstop
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Location: Security on the door to the arse-end of Nihilsville
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| Posted: Sat Jul 19, 2008 10:29 am Post subject: |
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Interesting indeed.
I'm not quite sure about the technique involved though.
Is it much the same process as the Black and White with colour process except using three layers or is it some other trickery probably beyond my ability?
The top pic is my favourite Alan mate .. reminds me of the recent Viera advert with the coloured smoke bombs.
Very, very thought provoking.
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AlanM
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Posts: 370
Location: Glasgow
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| Posted: Mon Jul 28, 2008 9:22 pm Post subject: |
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| Doorstop wrote: | Interesting indeed.
I'm not quite sure about the technique involved though.
Is it much the same process as the Black and White with colour process except using three layers or is it some other trickery probably beyond my ability?
The top pic is my favourite Alan mate .. reminds me of the recent Viera advert with the coloured smoke bombs.
Very, very thought provoking. |
The technique is very simple and the images above were produced in seconds once I'd chosen the ones to use.
Its done by taking 3 shots and lifting the red, green and blue channels (one from each shot) and combining them.
I can make up a quick and dirty tutorial if anyone is interested.
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wee minx
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| Posted: Tue Jul 29, 2008 9:15 pm Post subject: |
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yip 
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AlanM
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| Posted: Fri Aug 01, 2008 10:48 pm Post subject: |
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Harris Effect Tutorial.pdf
I've made a pdf tutorial of this technique - its pretty basic, but I don't think I've missed anything out.
Any probs give me a shout
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Doorstop
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| Posted: Sat Aug 02, 2008 10:14 am Post subject: |
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Cheers for that Alan. 
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