This time was the same, but different. On the JetBlack 24hour mountain bike event, the conditions were poor, but the expectation of results was high. Due to the continual rain I had to shoot at ISO1600 all day and sadly the aperture was low at f4-f5.6 for most of the day. this meant using flash [...]

I covered some adventure races late last year, and I experimented with using ETTL infra-Red flashes. I wanted to get the main flash off-camera to give a deeper light affect on the subject.
Here’s an extreme example…..

The flash off to camera left is the main light source with the on-camera (on flash bracket – on-camera) flash [...]