And to achieve this it’s important to use a lens that allows for apertures of f/2.8 or wider.
To capture clean images of the night sky you have to get as much light onto the sensor of your camera as possible. And to achieve this it’s important to use a lens that allows for apertures of f/2.8 or wider. The most commonly used lenses for Astrophotography often have apertures of f/1.8 or f/1.4. But even with the f/2.8 of the Canon RF 15-35mm lens, which I’m using, I can achieve high quality results. Before switching to that lens I was also able to capture a few night photos with a f/4 lens on my Canon 5DSR – but I can tell you, it was much more work to get the results I was after.