For the 3rd year running I covered the JetBack24 endurance mountain bike event at Del Rio Resort Wisemans Ferry. The last 2 years its rained non-stop. This year it was 35, humid and mosquito infested. At least I could use my gear to its full potential without it getting wet.

The brief from James Rankin at Marathon Photos was to be creative. However, you need to get saleable shots. This means faces and race numbers. No point getting a super creative shot if no one can buy it. I tried to keep it simple this year, with just one off-camera flash and used the PocketWizard MiniTT1, the FlexTT5 and most of all the AC3 Zone Controller. What is all that? It mean full manual power control over a remote flash. If the light changes, you can change with it, while getting the consistency and reliability of manual flash power.

Location 1 – Shot#1

Camera Gear – 1DMK3, 28-300 – 135mm, OSI1000, f6.3 1/160
Flash – 580EX – Camera right behind a tree – Manual power – 1/64th

Location 1 – Shot#2

Camera Gear – 1DMK3, 28-300 – 50mm, OSI200, f4 1/200
Flash – 580EX – Camera right behind a tree – Manual power – 1/64th

Location 2 – Shot#1

Camera Gear – 1DMK3, 28-300 – 235mm, OSI1000, f5.6 1/160
Flash – 580EX – Camera left – Manual power – 1/64th +1/3

Location 2 – Shot#2

Camera Gear – 1DMK3, 15mm Fisheye, OSI1000, f10 1/40
Flash – 580EX – Camera left – Manual power – 1/64th +2/3
Twist the camera on a slow shutter for the effect.

Conclusion
* The 28-300 is a great versatile lens for mountain bike shooting. Its not too bad across the entire range and means I carry 2 lenses not 3 or 4.
* The PocketWizard Manual system works really well. eTTL fails in these events due to the changing light situations and vastly inconsistent results.
* Remote flash is the way to go. Get the flash close to the subject and it uses far less power. 600+ shots all day on one set of batteries, and 1/64 power.