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--- doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/16 23:51] – [F-Stop Values] niccolo
+++ doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/17 11:54] – [F-Stop Values] niccolo
@@ Line 112: / Line 112: @@
 ===== 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 obtained dividing the focal lenght by 16 or 22, thus the **f/16** or **f/22**.
 The Olympus E-M10 have aprture stops at 1/3 of each full stop values:
-^  Full f-stop  ^  E-M10  ^
+^  Full F-Stop  ^  E-M10 F-Stop ^ Note  ^
-|   **1.0** |         - |
+|   **1.0** |         - |  |
-|   **1.4** |         - |
+|   **1.4** |         - |  |
-|   **2.0** |         - |
+|   **2.0** |         - |  |
-|   **2.8** |         - |
+|   **2.8** |         - |  |
-|           |         - |
+|           |         - |  |
-|           |       3.5 |
+|           |       3.5 | Max aperture at 14 mm focal lenght.  |
-|   **4.0** |   **4.0** |
+|   **4.0** |   **4.0** |  |
-|           |       4.5 |
+|           |       4.5 |  |
-|           |       5.0 |
+|           |       5.0 |  |
-|   **5.7** |   **5.6** |
+|   **5.7** |   **5.6** | Max aperture at 42 mm focal lenght.  |
-|           |       6.3 |
+|           |       6.3 |  |
-|           |       7.1 |
+|           |       7.1 |  |
-|   **8.0** |   **8.0** |
+|   **8.0** |   **8.0** |  |
-|           |       9.0 |
+|           |       9.0 |  |
-|           |      10.0 |
+|           |      10.0 |  |
-|  **11.3** |  **11.0** |
+|  **11.3** |  **11.0** |  |
-|           |      13.0 |
+|           |      13.0 |  |
-|           |      14.0 |
+|           |      14.0 |  |
-|  **16.0** |  **16.0** |
+|  **16.0** |  **16.0** |  |
-|           |      18.0 |
+|           |      18.0 |  |
-|           |      20.0 |
+|           |      20.0 |  |
-|  **22.6** |  **22.0** |
+|  **22.6** |  **22.0** |  |
 ===== OLYMPUS Image Share =====