Cress

Posted by barnoid Sun, 22 Apr 2012 22:14:00 GMT

Here is the final version, see also the test run and the making of. Briefly: 2125 shots taken every 2 minutes over 70.8 hours with a Canon EOS 40D with a Canon 50mm f1.8 lens with a +3 close-up filter wedged in the end. Cress seed on a bunch of damp cotton wool on a saucer on my home/hackspace made stepper motor turntable (3000 steps per revolution). In a cardboard box lined with a cut up white sheet, lit by a 20W daylight compact fluorescent light. The turntable and camera were controlled by an Arduino which turns the table one step just before taking the photo. The camera was set to manual, 1/8th second, f10, ISO 100. The test shoot was fairly flickery due to the lens not being totally accurate when it stops down the aperture to take the shot, so this time I pressed the aperture preview button and turned the lens slightly to disconnect the electrical contacts. This keeps the aperture stopped down and the camera unable to do anything about it, resulting in a consistent exposure every time. Despite claiming "daylight" the CFL is actually considerably cooler (see the test shoot). For this version I’ve corrected the white balance by batch processing with imagemagick. I also did the fade with imagemagick and then made the movie with ffmpeg. There’s a bit of a glitch around the one minute mark, this is where I watered the cress which caused the cotton wool to expand making it look like the whole lot jumps upwards slightly.

Cress in Progress

Posted by barnoid Tue, 17 Apr 2012 22:43:40 GMT

Cress in Progress
For the next five days this is happening in the cupboard. Cress really moves fast, the seeds started swelling as soon as I put them on the cotton wool.
MakeCanon
ModelCanon EOS 5D Mark II
Exposure0.008 sec (1/125)
Aperturef/4.0
Exposure ProgramAperture-priority AE
ISO Speed200
Date and Time (Original)2012:04:17 21:38:17
Exposure Bias+1 EV
FlashOff, Did not fire
Focal Length24 mm
QualityFine
Metering ModeEvaluative
Lens TypeCanon EF 24-105mm f/4L IS
Camera Temperature22 C

Test Cress

Posted by barnoid Sun, 15 Apr 2012 12:43:23 GMT

This is a test for a longer time-lapse I plan to make of cress germinating and growing. It consists of 902 photos taken every minute over 15 hours. It’s shot in a cupboard in a cardboard box lined with a white sheet and lit with a 20W daylight-coloured compact florescent light. I used a Canon EOS 40D with a Canon 50mm f1.8 lens with a +3 close-up filter which doesn’t fit the lens thread but does fit when kind of jammed in the front. This allows it to focus to about 8cm, but with very little depth of field (the aperture was on f8). I made the photos into a movie with ffmpeg.

Harbourside Timelapse

Posted by barnoid Mon, 12 Mar 2012 22:46:00 GMT

Shot from the Pervasive Media Studio at Watershed over about an hour and three quarters. Watch out for the hen party loading onto the blue barge before it speeds off. It was shot through a 3-stop neutral density filter at f22 to allow for half-second exposures on this sunny afternoon.

Bristol Hackspace Arduino Workshop

Posted by barnoid Sat, 10 Mar 2012 21:13:25 GMT

Bristol Hackspace ran an Arduino workshop. This is a panning timelapse of the first day’s morning session. I reversed the direction halfway through by reprogramming the panner’s Arduino.

Assembly

Posted by barnoid Sun, 27 Nov 2011 00:05:09 GMT

Watch me assemble two (count them, two) Ikea Vika Alexes simultaneously.

Build Brighton Hackspace Panning Timelapse

Posted by barnoid Fri, 09 Sep 2011 22:18:59 GMT

The first Thursday night hack session at the new space involved a remote controlled car, a dog, a rude POV blinker on a fan and a knock-off Roomba.

Brighton Mini Maker Faire - Fisheye Part 2

Posted by barnoid Tue, 06 Sep 2011 10:35:20 GMT

2150 photos taken between 1:41 pm and 5:50 pm with a Canon EOS 40D through a Sigma 8mm fisheye lens. The camera was triggered by an intervalometer I made with a 555 timer chip and an optoisolator. The resulting pictures were batch rotated and cropped using imagemagick and then made into a video at 25fps using ffmpeg.

Brighton Mini Maker Faire - Fisheye Part 1

Posted by barnoid Tue, 06 Sep 2011 09:59:26 GMT

2149 photos taken between 9:30 am and 1:41 pm with a Canon EOS 40D through a Sigma 8mm fisheye lens. The camera was triggered by an intervalometer I made with a 555 timer chip and an optoisolator. The resulting pictures were batch rotated and cropped using imagemagick and then made into a video at 25fps using ffmpeg. Check out the 3D printers running on the RepRap stand at the bottom.

Three Hours of The First Brighton Mini Maker Faire

Posted by barnoid Sat, 03 Sep 2011 18:33:17 GMT

Also the first test of my timelapse panner. Works pretty well.