I have blogged many images of motorcycles in the studio in the past weeks. Post-processing these images took time, since the studio background had to be painted black in PhotoShop. Due to spatial restrictions the backdrop is quite close to the bike (our carport is not bigger), therefore the black cloth catches some light from the flashes which hang above the bike.
Retouching an image can take up to 30 min. In the video you will see the process sped up 30 times , so 1 min of video time equals 30 min real time.