How Big Does A Lens Have To Be

The EXIF data on the RAW image of this photo tells me that I photographed this owl in 2011 with a Nikon D7000 and a lens of 300mm focal length. The D7000 is a crop-sensor camera, and to compare like with like for different cameras, there is a convention to describe focal length in termsContinue reading “How Big Does A Lens Have To Be”

Drumstick Primula and Cherry Tree

A closeup of the drumstick primula, Primula denticulata. When I saw it today in the Botanic Gardens in Cambridge, I assumed it was a variety bred by horticulturalists. But no, it is a wild flower from the Himalayas. The denticulata part of the name comes from the small toothed edges of the leaves. Cherry TreeContinue reading “Drumstick Primula and Cherry Tree”