How to create HDR timelapse footage - by jaybirch, (26/01/2010 PDT)
This blog article describes the techniques used to create this video

This timelapse sequence was shot on the Canon 5DII using an intervalometer and the exposure bracketing function to take a set of images ready for HDR processing (1200 images to be precise!). The technique should work on any camera that has a bracket exposure feature and timelapse (or intervalometer) feature.
I recommended using manual mode, switching off auto focus and image stabalisation and setting your main exposure level on something in the mid range (in this case, the mountain scenery). Then use the +2/-2 bracket feature to expose the shot ready to pick out the highlights and lowlights in your HDR software.I tend to shoot all still images in RAW, this will give you a much simpler time when it comes to colour correction and adjusting exposure.
To avoid unwanted flickering, I recommend having quite alot of landscape in the shot.... too much blue sky is the main culprit for flicker. For landscapes, using a polariser will help to bring even more depth to your shot.
After bringing the images onto my computer I then batch converted the images using Photomatix (this guide is very helpful).
I then took the sequence into After Effects to colour correct it and then create the 24p video. It's was a long process (especially with 21mpx images!) but one that rewarded me with exquisite 4k HD video. To say that it looks stunning on a HDTV/Projector is quite an understatement.
If you are shooting in high resolution, I would recommend keeping a 4k finished version... this will future proof your footage. I strongly believe that 4k will be the future for cinema/film and increasingly TV work, for many years to come.
