Hy Donzo98
My recommendation is to use ISO-100 and just use longer exposures. The lenses are fast enough that it works fine for any daylight, golden hour or even blue hour photos. These are small sensors and they get noisy in a hurry. f5'ish is...
However when watching the video on a 4K screen I still notice a huge gap in image quality between the 28 mm and the 70 /168 mm lenses as opposed to what people said