What is the rule of equivalent exposure?
The rule of equivalent exposure, in the simplest terms, allows you to make the exact same (or let’s say, equivalent) exposure using different settings for aperture, shutter speed and ISO. There are a number of combinations of aperture, shutter speed and ISO that can be used to achieve this equivalent exposure.
What is equivalent exposure in photography?
Equivalent exposure is a term used to describe finding the right balance of a few factors (like ISO, aperture, and shutter speed) to create the right exposure for an image. When capturing a photo, this usually takes place by juggling things like aperture, the ISO, and shutter speed.
What is the formula for exposure?
In photography, this equation governs the fundamental relationship between the scene, the camera, and the captured image: Image brightness ∝ Scene illumination × Subject reflectivity × Lens aperture area × Shutter open time × ISO sensitivity .
What is the equivalent exposure to using ISO 100?
An exposed value of f/8.0 at 1/15 sec with an ISO of 100 is equivalent to f/2.8 at 1/125 sec with an ISO of 100. Changing to this equivalent exposure produces a shallow depth of field, causing the background to blur, drawing attention to the subject.
Why would you want to use an equivalent exposure?
In short, equivalent exposures allow us to make creative decisions about image effects using the various combinations of aperture and shutter speed.
How do you calculate exposure for film?
Films are formulated by the manufacturer to respond according to the following formula, E = l × t, where E is the proper exposure, l is the intensity of illuminating light rays, and t is the film emulsion exposure time in seconds or fractions thereof.
What exposure is the same exposure as f/11 and 1 60?
Answer: f/5.6, 1/500 sec, ISO 200 is the same as f/11, 1/60, ISO 100.
How long do I expose my screen?
Expose the entire frame for two increments less than the manufacturers recommended exposure time. For example, if you have chosen 15 second increments and the manufacturer’s suggested exposure time is 4 minutes, then you will start at 3 minutes and 30 seconds.
How do you calculate exposure time on a screen print?
Calculating Your Exposure Time Move the thick, opaque paper down to where it is covering all but the first 2 rows. Expose the screen for the amount of time you came up with in Step 3 again. Continue moving the paper down and exposing until you have reached the bottom.
What is aperture f?
Aperture controls the brightness of the image that passes through the lens and falls on the image sensor. The higher the f-number, the smaller the aperture and the less light that passes through the lens; the lower the f-number, the larger the aperture and the more light that passes through the lens.