After posting the first set of 500fps videos from my friend, Grunde Løvoll, I promised some motion-capture (mo-cap) video, as well. So, here it is (download link below).

This video isn’t really video in the traditional sense, it’s data points captured in three dimensions and then output as a video-based file. The file linked to here is based on the original 200fps capture, but running at more like 100fps. The file shows a backcast made by me using a standard 5-weight, weight-forward line on a Sage XP590-4 rod. The cast was captured back in 2006, and it’s about time it showed up here.

In the video, you can see me (the small collection of wire-framed dots in the middle-left) making a strong backcast. You can also see me hauling (watch the dot that travels quickly to the left and then off the camera stage). The first part of the backcast is not visible due to restrictions in the stage area, but the key aspects of rod unload (check out the “S” bend at one point) can be seen clearly.

One of the slick things about this mo-cap system is that it also exports velocity tracks (the lines through the dots), which make it easy to see the amount each marker on the rod and caster moves in a given time. This allows quick visual identification of which part(s) of the rod and caster are moving the most—or least—at any given time. You can see, for example, the speed (and bend) in the mid and tip sections of the rod even as the butt section is slowing through the stop (which is actually not a dead-stop, but a rapid slowing as the rod continues to rotate—or turnover—from one position to another). On “normal” video, this effect can be harder to see and understand, but at 200fps (or 500fps), it’s pretty clear.

Enjoy!

Download jborger_maxrot_3_fs.avi.zip (126 KB)