What is the sensitivity of shooting grasslands and deserts?

1.raw format shooting, in order to post-process the blue sky.

2. Aperture recommendation 10 or less.

3. The lower the 3.ISO, the better. Both landscapes have a lot of details, so the lowest ISO, 80 or 100 must be used.

4. Use a tripod and turn off the anti-shake function (if any) to ensure the image quality.