f/11 vs f/16 is not about deviating from box speed. Just take a known good meter and measure in reflected light a number of sunlit scenes. Especially, but not only, landscapes with foliage.
I think the film looks normal. The light is a bit flat due to the overcast conditions.
The light metering has some emphasis on the sky, leading to some under-exposure of the ground. You can do a multi exposure scan to capture more detail and then bring up exposure a bit in post.
But I would say the film worked as it's supposed to.