Hudson River Park at sunset. I was testing how much light and noise is created when using my my new 2x teleconverter for the Nikkor Z 70-200mm f /2.8 VR S lens on my Nikon Z7. This 2x teleconverter gives the lens a 100% boost (effectively giving me a 140-400mm f/5.6 – loosing ~2 stops of light). I think the results of these photos taken in low light after noise reduction in post are acceptable. Once a long time ago I tried a 2x teleconverter on an f/5.6 lens it lost so much light the images were too grainy to use.