Moving along, we got to Goas and, as yesterday, there were plenty of zebra at the waterhole. I shot for a few minutes and then remembered I had brought along on the trip a 6-stop neutral density filter. Getting long shutter times in daylight is usually a challenge and this would decrease light to the sensor and allow those longer shutter speeds. My plan coming to Etosha was that I wanted some longer exposure shots of animals at waterholes with the hope one or two animals would remain motionless, while other animals moved around, creating a mix of motion and static animals. Than plan worked fairly well, however, I had not considered a few factors: I was in a vehicle with another person and I was on a beanbag with a super-telephoto lens. Any motion by my fellow photographer in the vehicle ruined shots. Any motion by me while shooting long ruined the shots. I quickly learned that the idea has great potential, but technique requires practice and patience. I will try this again in the future.