Table of Contents
- 1 What does f2 8 mean in photography?
- 2 What is the exposure equivalent of 1/100 F 16?
- 3 What are the standard shutter speeds and standard f stops?
- 4 What does 200mm lens mean?
- 5 What is exposure in radiography?
- 6 What is the correct exposure level for your photography?
- 7 What is the correct shutter speed for a correct exposure?
- 8 What is an equivalent exposure?
What does f2 8 mean in photography?
It means the aperture ring is opened at f 2.8. It means you will get more light to the sensor and more bokeh but you will get lesser depth of field (The area in focus). Generally this kind of open aperture is used for portrait photography.
What is the exposure equivalent of 1/100 F 16?
How does the f/16 rule work and how can you adapt it to suit your needs?
| Aperture (f-stop) | ISO (film speed) | Shutter Speed |
|---|---|---|
| f/22 | 100 | 1/60s |
| f/16 | 400 | 1/500s |
| f/11 | 100 | 1/250s |
| f/8 | 100 | 1/500s |
What is the formula for shutter speed?
The rule of thumb is that the shutter speed should be 1/[Focal Length]. So if you are shooting with a 500mm lens, you should set your shutter speed to 1/500 or higher. If you are using a DSLR that has a crop factor you have to multiply by the crop factor.
What are the standard shutter speeds and standard f stops?
Standard f/stops: 1.4 (widest opening), 1.8 (or 2), 2.8, 4, 5.6, 8, 11, 16, 22, 32, 45. Most cameras can set half stops. Standard shutter speeds: 1 (one second, slow shutter speed), 2 (half second), 4, (1/4 second, etc.)
What does 200mm lens mean?
A focal length is a property of a lens, expressed in millimeters. Wide-angle lenses have small focal lengths, such as 10mm or 20mm. The smaller the number, the wider the lens. Telephoto lenses have large focal length. such as 200mm or 300mm.
What does 2.8 mean on a lens?
What is the Aperture Scale?
| f/1.4 | f/2.0 | f/2.8 |
|---|---|---|
| Very large aperture | Large aperture | Large aperture |
| Lets in a huge amount of light | Half as much light | Half as much light |
| Very thin depth of field | Thin depth of field | Thin depth of field |
What is exposure in radiography?
Exposure describes the ability of x-ray photons to ionize air and cannot be used for protons, neutrons or electrons. Exposure decreases with the square of the distance from an x-ray source (inverse square law).
What is the correct exposure level for your photography?
You dial in some settings – say f/2.8, 1/250 s, and ISO 200 – to get the exposure level indicator at 0 ( which means a ‘correct’ exposure based on your metering mode ). You capture a photo but feel that you need a greater or deeper depth of field which you know can be obtained by using a smaller or narrow aperture.
What is a ‘correct’ exposure?
Again, let’s review, that every ‘correct’ exposure is nothing more then the quantitative value of an aperture and shutter speed working together within the ‘confines’ of a predetermined ‘ ISO ’.
What is the correct shutter speed for a correct exposure?
Likewise, if we find ourselves taking an outdoor portrait at the park with our telephoto zoom, we find that with our aperture set to f/16 and with an ISO of 100, a correct exposure is indicated at a shutter speed of a 1/125 second (s). If I suggest we use an aperture of f/8, what would the shutter speed now indicate as a correct exposure?
What is an equivalent exposure?
An equivalent exposure is one that relies on the same amount of light for the proper exposure but juggles the aperture and shutter speed settings to yield different image effects. This waterfall was photographed with two exposures, one at f/22 at 1⁄15 sec and one at f/8 at 1/125 sec.