Welcome followers and visitors to my blog and the latest update in my diary of how I am progressing with trying to learn how to take a decent photograph with my new camera. Progress is slow but I am enjoying it. Just have to take it step by step. Unfortunately I am rather good at forgetting things!
Shutter speed, also referred to as “exposure time”, represents;
the length of time a camera shutter is open to expose light into the camera sensor.
Slow Shutter speed creates an effect called “motion blur”, where moving objects appear blurred along the direction of the motion.
Goff James, Movement, 2017
Slow shutter speeds are also used to photograph lightnings or other objects at night or in dim environments with a tripod.
Landscape photographers intentionally use slow shutter speeds to create a sense of motion on rivers and waterfalls, while keeping everything else in focus.
Marc AdamusEndless Falls (2007)
Mount Hood Wilderness, Oregon
Fast shutter speed is typically whatever it takes to freeze action.
Bob Martin, Title and Date Unstated.
Aperture size affects the Depth of Field in an image and which area of the image will be sharp.
A large f-number such as f/32, (smaller aperture) brings all foreground and background objects in focus.
Paul White, Autumn Grindleford, Date Unstated
A small f-number such as f/1.4 (large aperture) isolates the foreground from the background by making the foreground objects sharp and the background blurred and out of focus.
Aaron Siskind, Martha’s Vineyard, 1954-59
DSLR Camera Settings
The manual and semi-auto settings give one more creative control of a DSLR camera.
A (Av) Aperture-priority /Autoexposure
The user selects the f-stop and the camera selects shutter speed that will produce a good exposure.
S (Sv) Shutter-priority / Autoexposure
The user sets the shutter speed and the camera selects the f-stop that will produce a good exposure.
M Manual Exposure
The user controls both the shutter speed and f-stop.
The common shutter speeds are:
1s 1/2s 1/4s 1/8s 1/15s 1/30s 1/60s 1/125s 1/250s 1/500s 1/1000s 1/2000s
Fast shutter speeds such as;
1/250s will freeze faster moving subjects, depending on their speed of movement.
Slow shutter speeds such as:
1/30s and slower will create motion blur with moving subjects, depending upon their speed of movement.
One has to remember that depending on the choice of lens one should ideally select a shutter speed of at least 1/60s to prevent camera shake without using a tripod.
So much to remember! So Easily forgotten!!
Andrew Johnson, 2017, Lesson Transcript