Posts Tagged: Long Exposure

More fun with long exposure stacking of photos

A few months ago I experimented with Imagemagick by using it to merge very similar photos of flowing water to give the impression of a longer exposure.

Here are a few more examples.

By merging a series of thirty photos taken two seconds apart I created a pleasing image that looks like a sixty second exposure. The day I took these photo was overcast and dull, but not dark enough to do an actual long exposure like that without the help of some fairly dark filters. I used the intervalometer in Magic Lantern to shoot this so I didn’t even need a remote release. My camera did all the work! This was created using the following Imagemagick command line:

convert *.jpg -average average.jpg

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average

I combined 60 long exposure shots of the night sky in the mountains of Utah (during the Automattic Grand Meetup a few weeks ago) to create a single long exposure of the stars moving through the sky. Thanks mkaz for publishing this post on interval shooting where I got this command line:

convert *.jpg -evaluate-sequence max combined.jpg

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combined

Finally, another series of sixty shots taken in Utah. The same convert command line was used to process these.

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combined

In the image above I should have cloned out the wires in the bottom left of the image. Lightroom makes it easy to make the same modifications to every image. Work on one image, then select all the ones you need and click “Sync Settings”.

It can be frustrating taking these types of photos as your camera is shooting a long series of very ordinary shots, and the final result can’t be seen until the images are processed correctly but it’s certainly worth it.

Update on December 1st: here’s one that didn’t work out so well. It was so windy the camera shook the whole time.

combined photo

Aperture ƒ/8
Camera Canon EOS 6D
Focal length 24mm
ISO 100
Shutter speed 1/50s

Fun on Grand Parade

Aperture ƒ/8
Camera Canon EOS 20D
Focal length 48mm
ISO 100
Shutter speed 1.3s

Lights of the North Side

Aperture ƒ/22
Camera Canon EOS 20D
Focal length 200mm
ISO 100
Shutter speed 6s

Reflection of Brian Boru Bridge

Aperture ƒ/22
Camera Canon EOS 20D
Focal length 200mm
ISO 100
Shutter speed 15s

Myrtleville Seascape

Aperture ƒ/8
Camera Canon EOS 6D
Focal length 55mm
ISO 50
Shutter speed 8s

Medieval Fight

Aperture ƒ/4
Camera Canon EOS 6D
Focal length 40mm
ISO 12800
Shutter speed 1/40s

Saint Fin Barre’s Cathedral

Aperture ƒ/8
Camera Canon EOS 6D
Focal length 28mm
ISO 200
Shutter speed 13s

Inch Beach at Night

Nothing but rain…

Aperture ƒ/22
Camera Canon EOS 6D
Focal length 84mm
ISO 50
Shutter speed 2.5s

Swinging Fire #2

Aperture ƒ/8
Camera Canon EOS 6D
Focal length 24mm
ISO 100
Shutter speed 20s