User Tools

Site Tools


doc:appunti:hardware:olympus-e-m10-mark-ii

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/16 23:51]
niccolo [F-Stop Values]
doc:appunti:hardware:olympus-e-m10-mark-ii [2020/06/17 11:54]
niccolo [F-Stop Values]
Line 112: Line 112:
 ===== 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 **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: 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 ===== ===== OLYMPUS Image Share =====
doc/appunti/hardware/olympus-e-m10-mark-ii.txt · Last modified: 2020/09/20 09:02 by niccolo