Posts Tagged: Night

Coburg Street Lights

Coburg Street Lights

The lights of Coburg Street and passing cars in a long exposure shot of the street from the traffic lights at the junction with Bridge Street.

This was a 15 second exposure at f/22. The lovely star shape of the street lights is because the opening in the lens was so small (at f/22) and the diaphragms of my lens. It takes a long time to get the exposure but it’s worth it!

This appears to be a beautiful example of Fraunhofer diffraction. It is due to the wave nature of light. The effect depends on the wavelength (that is, the color). It is most pronounced when bright light from a practically infinite distance passes through narrow slits, causing the light to spread perpendicular to the slits. This spreads a point-like beam of light into a pair of streaks.

Using a small aperture creates slit-like situations at the corners formed by adjacent blades. Thus, when you have a combination of relatively intense, pointlike, monochromatic light sources in the image and a narrow aperture, you should see a streak (of the same color) emanating from the points in two directions perpendicular to the blades…

…Finally, length of exposure is related to the occurrence of this effect, as you have observed, but only because exposures with bright points of light are almost always made much longer than needed to record the lights: you’re trying to see the rest of the scene, which is much darker. The brightness of the diffraction streaks decreases so rapidly away from their sources that if you used a sufficiently short exposure to properly expose the lights themselves, the streaks would be practically invisible.

Aperture ƒ/22
Camera Canon EOS 6D
Focal length 19mm
ISO 100
Shutter speed 15s

Light Trails on MacCurtain Street

Light Trails on MacCurtain Street

Ghostly light from passing cars hangs in the air on the corner of MacCurtain Street and Bridge Street in Cork City, Ireland.

This is the second of three light trails or light streaks photos I’ll post here in an unintentional series of long exposure photos. The first was my Light Trails in Blarney photo published yesterday.

Aperture ƒ/22
Camera Canon EOS 6D
Focal length 17mm
ISO 100
Shutter speed 8s

Light Trails in Blarney

Light Trails in Blarney

The red lights of a passing car streak across this photo taken in front of Christy’s in Blarney over the weekend.

The photo was a long exposure of 8 seconds, at f/4, ISO 100. I was shooting in manual mode and made sure the scene was under exposed by at least a stop. As f/4 was my widest aperture the lens captured as much of the red light as it could.

I took numerous shots of this scene and was bent over my camera (with my wallet under the lens to angle it upwards) so long that a woman came over asking if I had lost anything!

Aperture ƒ/4
Camera Canon EOS 6D
Focal length 17mm
ISO 100
Shutter speed 8s

Construction on Academy Street

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Back in 2008 Academy Street, Cork looked very different. The clothes shops and Opera Lane had yet to be built. If you stood in the same spot today all you’d see would be the shining façade of consumerism.

Aperture ƒ/3.5
Camera Canon EOS 20D
Focal length 10mm
ISO 800
Shutter speed 1/20s

Cork City Hall at Night

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Cork City Hall as pictured from across the River Lee.

Busy streets of Cork

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Drivers heading home and into town in Cork

Bay Bridge at Night

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The Bay Bridge in San Francisco as it was in 2007. I can’t believe that was seven years ago. Wow.

Ground Level by Bishop Lucey Park

Ground Level by Bishop Lucey Park

The Grand Parade in Cork was quite different 11 years ago. Outside Bishop Lucey Park was an uneven path, the centre of the street was a narrow section between two busy strips of tarmac. And of course the Capitol Cinema was still open. I’m glad the monstrosity pictured here was never built there, even if the site is still dormant. More info on the history of that site available here.

This shot was taken within minutes of this Grand Parade shot I posted last month.

Parnell Place Bus Station

Parnell Place Bus Station

Parnell Place Bus Station and Brian Boru Bridge, Cork at night.