doc:appunti:hardware:olympus-e-m10-mark-ii
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doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/16 18:54] – [Scene Mode] niccolo | doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/17 11:54] – [F-Stop Values] niccolo | ||
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===== F-Stop Values ===== | ===== F-Stop Values ===== | ||
- | Traditionally the **f-stop scale** is composed of values which distantiate each other by halving the light that is allowed to come in. A value of **f 1.0** means that the lens aperture (the hole diameter) is equal to the focal lenght. Each following stop value is obtained by multiplying the previous one by **the square root of 2**. So the value **f 1.4** means that the aperture is obtained by dividing the focal lenght by 1.4, and so on with **2.0**, **2.8**, **4.0**, **5.7**, ... The minimum aperture is usually **f 16** or f **22**. | + | Traditionally the **f-stop scale** is composed of values which distantiate each other by halving the light that is allowed to come in. A value of **f/1.0** means that the lens aperture (the hole diameter) is equal to the focal lenght. Each following stop value is obtained by multiplying the previous one by **the square root of 2**. So the value **f/1.4** means that the aperture is obtained by dividing the focal lenght by 1.4, and so on with **f/2.0**, **f/2.8**, **f/4.0**, **f/5.7**, ... The minimum aperture is usually |
The Olympus E-M10 have aprture stops at 1/3 of each full stop values: | The Olympus E-M10 have aprture stops at 1/3 of each full stop values: | ||
- | | 1,0 | | + | ^ Full F-Stop |
- | | 1,4 | | + | | **1.0** | - | |
- | | 2,0 | | + | | **1.4** | - | |
- | | 2,8 | | + | | **2.0** | - | |
- | | | | + | | **2.8** | - | | |
- | | | 3,5 | + | | | |
- | | 4,0 | 4,0 | + | | |
- | | | 4,5 | + | | **4.0** | **4.0** | | |
- | | | 5,0 | + | | |
- | | 5,7 5,6 | + | | |
- | | 6,3 | + | | **5.7** | **5.6** | Max aperture at 42 mm focal lenght. |
- | | 7,1 | + | | | 6.3 | | |
- | | 8,0 8,0 | + | | | 7.1 | |
- | | 9,0 | + | | **8.0** | **8.0** | | |
- | | 10,0 | + | | | 9.0 | | |
- | | 11,3 11,0 | + | | | |
- | | 13,0 | + | | |
- | | 14,0 | + | | | |
- | | 16,0 16,0 | + | | | |
- | | 18,0 | + | | |
- | | 20,0 | + | | | |
- | | 22,6 22,0 | + | | | |
+ | | | ||
===== OLYMPUS Image Share ===== | ===== OLYMPUS Image Share ===== |
doc/appunti/hardware/olympus-e-m10-mark-ii.txt · Last modified: 2023/09/11 15:27 by niccolo