As it turns out, I discarded all the shots taken with the Canon, but got some interesting shots with the Sony. There were some patches of weak blue sky, but mainly it was flat grey cloud - I was surprised how interesting some of the shots came out despite this. Some of the images have had their reality augmented using Nik Collection.
All exposures at f/8, ISO 100
Lens: Focotar 2, 50mm f/4.5

Lens: Focotar 2, 50mm f/4.5

Lens: Focotar 2, 50mm f/4.5

Lens: Soligor Enlarger Lens, 35m f/3.5:

Lens: Focotar 2, 50mm f/4.5

Lens: Lithagon (28mm, f/3.5).

Lens: Soligor Enlarger Lens, 35m f/3.5:

Lens: Focotar 2, 50mm f/4.5. (BTW, for the older UVP members - the white building on the ridge is the old Cobstone windmill near Turville where part of Chitty Chitty Bang Bang was filmed - see https://globalfilmlo...film-locations/ )
