The Davis Cup at the Manchester Arena in September 2023 was my first effort at photographing indoor tennis. On arrival the venue looked superb with the tennis court bathed in good light - just what photographers want to see. I had a super court side seat in full view of all the action. It was a different story when the action started. Inside the white lines of the tennis court was the green playing area - the part that was brightly lit,  however, it seemed the players never went there, they stayed for 95% of the time on the grey area behind the baseline hitting long balls over the net. There was a huge fall off in light in that grey area and the further into it the players went, the worse the light became. To maintain image sharpness I varied my shutter speed from 1\1250th sec to 1\2000th sec but at f2.8 this meant an ISO value of 5000 to 8000, so inevitably the images became a bit grainy and required some noise reduction in post processing. Keeping the camera as still as possible whilst the action was moving rapidly was the key to sharp images. My lenses of choice were the Canon 400mm f2.8 combined with a Canon 1DX3 and the Canon RF 70-200mm combined with a Canon R3. Occasionally, I would go right up high into the stands to get wider angle views of the action with a 16-35mm.