These are olive trees, between 500 and 1000 years old. They were transplanted from their original location in the Sierra de Maestrazgo to the grounds of the company I work for near Madrid. Their branches have been cut and over the years new growth has occurred, so they look quite strange, with huge, knarled trunks and small branches with little vegetation.
I hadn't used my fixed 50mm f/1.4 lens for a long time, so I took it with me and re-learned what it's like to use large apertures; I had lost the feel for depth of field with apertures of f/1.4 or f/2.8.
#1 Dated 1031. This photo was taken with a f/1.4 aperture and the colour version shows a lack of sharp focus in much of the tree. However, the B&W version doesn't, which is curious. It also looks more interesting in B&W.
#2 Dated 1645. Looks like a person got caught in this trunk; can you see the poor soul?
#3. It was dusk and the light created a nice warm effect. The tight frame was to avoid other objects in the background.
#4. I don't recall why I used f/4.5 here; I must have wanted more the of trees in the background to be less out-of-focus.
#5. Emphasisng the foreground tree more.
Tony