Richard G
Veteran
In bright sun there’s a lot to be said for setting manual exposure by just using Sunny 16, and with colour negative film erring on the side of overexposure. For instance 1/250 at f11 would have been fine here. There is the temptation to assiduously balance the M6 meter’s LED red triangles, and so often it gets it right. Your lens doesn’t look to be wider than 35mm, but with 28mm and wider the sky contributes too much to the meter’s calculation, causing underexposur, and this is probably the case with the M6 as well.