Demonstration of the Sony FDR AX53 Zoom Function. Filming a paraglider gliding down into the valley. The Sony FDR AX53 4K Camcorder with its up to 250x zoom takes amazing pictures and zooms in effortlessly. See how the Sony FDR AX53 4K Camcorder works when zooming really far distances. Handheld zoom test in 4K. Filmed in Dornbirn on Karren.