This week’s lesson is ‘Still Life’; a project requiring an understanding of DOF and ISO.
1. Depth of Field i.e. part of the image that the photographer wants to have in focus. For a shallower depth of field:-
- larger apertures (smaller F-stop number)
- closer focusing distances
- magnification of focal length
2. ISO: sensitivity to light of the sensor. Higher ISO for dim light conditions but noise increases especially with long exposures
The following are not particularly photographic but purely experimentation with Aperture mode (camera sets shutter speed) and ISO, using tripod and window illumination:-
Every year I’m tempted to ditch the Schlumbergera cactus as it is an ugly dust-gatherer that really would prefer to be living “epiphytically, high up in the trees of rain forests and jungles. Here it thrives on the rotting vegetable waste that gathers in the clefts and crevices of branches, enjoying comfortable dappled shade and plenty of warmth and moisture“.1. When it bursts into Barbie flowers in November (it’s not a Christmas cactus – leaves are more pointed) I forgive it and so anther year of occupation passes.
These ‘real’ xerophytic cacti are in my care for now – even with tripod, there is a little camera shake blurring. To remedy, I could shoot with a 2 sec or more delay.
I might never have my name in lights as a photographer but its fun to try. Have a good weekend!
1. How to grow: Schlumbergera