My first simple timelaps-test with an intervalometer. Camera was a 7D with the Canon 17-55mm f2.8 lens @ f2.8, 160 ISO with 30" esposure and a still every 90". Could not shoot more stills, because the 7D needs quite a long time after closeing the shutter to save the picture. Not shure why this is, but it's even longer than the exposure time itself. Was roughly 40" here.