Autumn colour using a 1980s legacy lens..
Coevolution
According to the coevolution theory, the colors are warning signals to insects like aphids that use trees as a host for the winter. If the colors are linked to the amount of chemical defenses against insects, then the insects will avoid red leaves and increase their fitness; at the same time, trees with red leaves have an advantage because they reduce their parasite load. This has been shown in the case of apple trees where some domesticated apple varieties, unlike wild ones, lack red leaves in autumn. A greater proportion of aphids that avoid apple trees with red leaves manage to grow and develop compared to those that do not. A trade-off, moreover, exists between fruit size, leaf color, and aphids resistance as varieties with red leaves have smaller fruits, suggesting a cost to the production of red leaves linked to a greater need for reduced aphid infestation.
Shot with a Canon FD mount, Super Ozeck II, 135mm, F2.8 lens, at Chatsworth Derbyshire.
The lens was reviewed by Amateur Photographer in August 1982 - and the 135mm was reported to be excellent, the best of the Ozeck series and equal to the best named brands.
Autumn colour using a 1980s legacy lens..
Coevolution
According to the coevolution theory, the colors are warning signals to insects like aphids that use trees as a host for the winter. If the colors are linked to the amount of chemical defenses against insects, then the insects will avoid red leaves and increase their fitness; at the same time, trees with red leaves have an advantage because they reduce their parasite load. This has been shown in the case of apple trees where some domesticated apple varieties, unlike wild ones, lack red leaves in autumn. A greater proportion of aphids that avoid apple trees with red leaves manage to grow and develop compared to those that do not. A trade-off, moreover, exists between fruit size, leaf color, and aphids resistance as varieties with red leaves have smaller fruits, suggesting a cost to the production of red leaves linked to a greater need for reduced aphid infestation.
Shot with a Canon FD mount, Super Ozeck II, 135mm, F2.8 lens, at Chatsworth Derbyshire.
The lens was reviewed by Amateur Photographer in August 1982 - and the 135mm was reported to be excellent, the best of the Ozeck series and equal to the best named brands.