Posts Tagged: Sky

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

Tree in shadow

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A tree in the grounds of Blarney Castle.

Yesterday morning there was a glorious sunrise, this morning it was horrible. Fingers crossed for tomorrow!

Camera SM-G900F

St. Peter’s Church, Bandon

St. Peter's Church

This is a Church of Ireland church in Bandon, Co Cork that’s off the usual route for commuters passing through the town. I’ve only ever been up that direction once or twice despite having passed through the town hundreds of times!

It’s a beautiful looking building but I’ve never been inside and there are few photos of it online from what I could see after a quick search.

On the Beach in Playa Blanca, Lanzarote

On the Beach in Playa Blanca, Lanzarote

Exactly a year ago today.

Aperture ƒ/10
Camera Canon EOS 6D
Focal length 24mm
ISO 100
Shutter speed 1/200s

Blarney Castle in the Evening

Blarney Castle in the Evening

Blarney Castle as seen this evening. The garden’s looking amazing and it’s nice to see the new statues and art over the last few days.

Shot with my Galaxy S4, so apologies for the Jpeg artefacts. It’s a HDR image and it’s really pushing the sensor!

Camera GT-I9505

Sun sets over Kerry Mountains

This was taken seven years ago and I have no idea where exactly it was taken. I suspect it was somewhere near Killarney but I know it was in Kerry somewhere.

Clouds over Blarney

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I walked out my front door in late August, 2011 and saw this amazing cloud in the sky above my head. I could not resist taking a few photos!

Fog and Shandon Bells

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Cork City in fog, 2002. Shot with an ancient Fuji FinePix 2800, a 2MP camera and my second digital camera.