Friday, 23 November 2012
Thursday, 22 November 2012
Journal: Av & DoF
Aperture & Depth of Field
- Standard Aperture/F-stops--the ratio of the focal length of the lens to the diameter of the aperture
- Aperture Priority-a camera mode that allows you to select the aperture in over the available range and have the camera calculate the best shutter speed to expose light correctly
- Ambient Light-natural, available light that’s not added by the photographer
- Artificial Light-light that comes from man-made light source
- ASA/ISO/Film Speed-- ASA 'American Standards Association' responsible for supplying the speed rate that measures the degree to which film is sensitive to light- ISO 'International Organization for Standardization' film speed ratings are used it indicate the relative amount of light necessary to give proper exposure- Film speed is the measure of a photographic film's sensitivity to light
- Bracket--means to take multiple photos of the same scene with different exposure settings.
- Depth of Field-amount of a photo that will be in focus
- Exposure Triangle-
- each three aspect of the triangle relate to light and how it enters and interacts w/ the camera- the three elements, ISO, Aperture, and Shutter Speed, that if one iso was changed it effects both shutter speed and aperture for the photo; if either Av or shutter speed were modified it will only effect themselves and not iso - How to Control Depth of Field-
- Large Av will decrease DOF and a small Av will make a large DOFLarge aperture (remember it’s a smaller number) will decrease depth of field while small aperture (larger numbers) will give you larger depth of field.
Read more: http://digital-photography-school.com/aperture#ixzz2CyY5A9Xb - Light Meter--a sensor used to measure light and indicate the ideal exposure settings
Find
examples for your journal label each image and guess the aperture
settings used on the camera.
Short, f-22
medium f-16
wide f-1
(The photos above belong to their rightful owners, I own nothing)
Journal: Shutter
Shutter
- SLR - SLR, which stands for single-lens reflex, refers to a type of camera that employs a rotating mirror (either a pentaprism or a pentamirror) that reflects the image that comes through the lens onto a focusing screen.
- TLR - Twin-lens reflex, a camera with two lenses the upper one is the viewfinder lens that has a mirror reflex view and the bottom one is the taking lens.
- Shutter - what determines the duration the sensor is exposed to light.
- Shutter Speeds - the time for which the shutter exposes the film, typically a small fraction of a second.
- Bulb - that keeps the shutter open for as long as the shutter release is pressed
- Cable Release - a cable that screws into the camera (on film camera bodies usually into the shutter release, on digital bodies elsewhere) so the shutter can be fired remotely with minimal shake.
- Tripod - a camera accessory that consists of three legs that support a platform on which photographers can place their cameras.
- Light Meter- a sensor used to measure light and indicate the ideal exposure settings.
- Bracketing- is the technique of shooting a number of pictures of the same subject and viewpoint at different levels of exposure.
- Hot Shoe- is a mounting point on the top of a camera to attach a flash unit.
- Slow Shutter Speed f-4
2. Fast Shutter Speed f-1000
3.Panning f-125
4.Painting with Light f-125
5.Multiple Exposures f-500
(None of the photos above belong to me, but their respectable owners)
Sunday, 4 November 2012
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