No higher sensitivity as usual. I always shoot ISO 400. The A350 MSN2 night shot is another story. The aperture is constant f:8 - so only longer or shorter exposure time leads to different saturation - see the data under the thumbs.
Thanks for the tips Linie 9. Still learning the basics. I always assumed that lowest sensitivity is best for good light conditions and that higher ISO leads to more grain. And then fiddle about with the aperture and shutter speed to control exposure.