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 [2019/12/13 16:15]
niccolo
doc:appunti:hardware:olympus-e-m10-mark-ii [2020/10/09 17:11]
niccolo [AEL/AFL and Back Button Focus]
Line 1: Line 1:
-====== Olympus E-M10 Mark II - Mirrorless Camera ======+====== Olympus E-M10 Mark II ====== 
 + 
 +The **Olympus E-M10 Mark II**  is a mirrorless camera introduced in september 2015; it features a **4/3 sensor** (17.3 x 13.0 mm) capable of 4608 x 3456 pixels, an **OLED electronic viewfinder** with 2.36 Mpixels and a 3.5 inches touch screen. A feature that distinguishes this camera from other mirrorless ones, is the presence of **two adjustment dials** (in addition to the one which selects the mode and the on/off/flash lever). The dials, like the three Fn buttons, can be **freely assigned** among many functions. 
 + 
 +The camera, in combination with the **M.ZUIKO 12-42 mm pancake lens** (28-84 mm equiv.), is extremely compact and portable.
  
 {{.:olympus:olympus-e-m10-mark2.jpg?480|The Olympus E-M10 Mark II}} {{.:olympus:olympus-e-m10-mark2.jpg?480|The Olympus E-M10 Mark II}}
Line 67: Line 71:
 ===== AEL/AFL and Back Button Focus ===== ===== AEL/AFL and Back Button Focus =====
  
-The **normal behavior** for autofocus and automatic exposure is to **press the shutter button halfway**: the camera performs AF/AE and generally keeps the values locked while you keep the button pressed halfway. Then you can **change framing** and **shoot** by pressing the button completely.+The **default behavior** for auto focus and auto exposure is to **press the shutter button halfway**: the camera performs both **AF** and **AE**, keeping the values locked while the button is pressed halfway. Then you can **change framing** and **shoot** by pressing the button completely. 
 + 
 +This behaviour can be **separately changed** for the three focusing modes: **S-AF**, **C-AF** an **MF** (single and continous auto focus, manual focus); the relevant menu is **Custom Menu** => **A. AF/MF** => **AEL/AFL**. 
 + 
 +The default is **mode1** for all the three focusing modes. **Automatic exposure** and **focus** are **both** performed when the button is pressed **half way** (only the exposure is performed in manual focus, obviously): 
 + 
 +{{.:olympus-e-m10:ael-afl-menu_s-af_mode1.jpg?200|}} 
 +{{.:olympus-e-m10:ael-afl-menu_c-af_mode1.jpg?200|}} 
 +{{.:olympus-e-m10:ael-afl-menu_mf_mode1.jpg?200|}} 
 + 
 +If you want **only** the **auto focus** function when the button is pressed **half way**, you can choose **mode2**. The **exposure is not locked**, it changes as you change the framing until you press the button completely: 
 + 
 +{{.:olympus-e-m10:ael-afl-menu_s-af_mode2.jpg?200|}} 
 +{{.:olympus-e-m10:ael-afl-menu_c-af_mode2.jpg?200|}} 
 + 
  
 This behavior can be changed, for example by **separating the AF and AE functions**. Only one of them will be associate to pressing the **shutter button halfway**, the other will be associated to another button, usually a **Fn key**. In general **the Fn button will be used first** (to activate AF or AE), the other //auto// function will be activated by pressing the shutter button halfway, just before completing the shot. This behavior can be changed, for example by **separating the AF and AE functions**. Only one of them will be associate to pressing the **shutter button halfway**, the other will be associated to another button, usually a **Fn key**. In general **the Fn button will be used first** (to activate AF or AE), the other //auto// function will be activated by pressing the shutter button halfway, just before completing the shot.
Line 73: Line 92:
 {{.:olympus:menu-af-mf.png?200|AEL/AFL Modes Menu}} {{.:olympus:menu-af-mf.png?200|AEL/AFL Modes Menu}}
 {{.:olympus:menu-af-mf-mode1.png?200|S-AF Default Mode for AEL Button}} {{.:olympus:menu-af-mf-mode1.png?200|S-AF Default Mode for AEL Button}}
-===== Acronyms from Olympus OM-D Camera Manual =====+===== Acronyms from the Olympus OM-D Camera Manual =====
  
 ^ AEL   | **Auto Exposure Locking**: Press the assigned button once to lock the exposure and display **AEL** on the monitor. Press the button again to cancel the lock.  | ^ AEL   | **Auto Exposure Locking**: Press the assigned button once to lock the exposure and display **AEL** on the monitor. Press the button again to cancel the lock.  |
Line 105: Line 124:
 ^ Portrait    | According to manual, it **//produces beautiful skin tones//**.  | ^ Portrait    | According to manual, it **//produces beautiful skin tones//**.  |
 ^ e-Portrait  | The manual says about this mode that it **//produces smooth skin textures//**.  | ^ e-Portrait  | The manual says about this mode that it **//produces smooth skin textures//**.  |
 +
 +
 +
 +===== 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 **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 F-Stop ^ Note  ^
 +|   **1.0** |         - |  |
 +|   **1.4** |         - |  |
 +|   **2.0** |         - |  |
 +|   **2.8** |         - |  |
 +|                   - |  |
 +|                 3.5 | Max aperture at 14 mm focal lenght.  |
 +|   **4.0** |   **4.0** |  |
 +|                 4.5 |  |
 +|                 5.0 |  |
 +|   **5.7** |   **5.6** | Max aperture at 42 mm focal lenght.  |
 +|                 6.3 |  |
 +|                 7.1 |  |
 +|   **8.0** |   **8.0** |  |
 +|                 9.0 |  |
 +|                10.0 |  |
 +|  **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 =====
Line 127: Line 178:
  
   * **dcraw**   * **dcraw**
-  * **digikam** 
   * **rawtherapee**   * **rawtherapee**
 +  * **darktable**
 +  * **digikam**
   * **ufraw**   * **ufraw**
   * **lightzone** (missing in Debian)   * **lightzone** (missing in Debian)
   * **rawstudio** (missing in Debian)   * **rawstudio** (missing in Debian)
 +
 +<code>
 +dcraw -i -v PC150102.ORF
 +
 +Filename: PC150102.ORF
 +Timestamp: Sun Dec 15 11:27:45 2019
 +Camera: Olympus E-M10MarkII
 +Owner: Niccolo Rigacci                                                
 +ISO speed: 200
 +Shutter: 1/2000.0 sec
 +Aperture: f/3.5
 +Focal length: 14.0 mm
 +Embedded ICC profile: no
 +Number of raw images: 1
 +Thumb size:  3200 x 2400
 +Full size:   4640 x 3472
 +Image size:  4640 x 3472
 +Output size: 3472 x 4640
 +Raw colors: 3
 +Filter pattern: RG/GB
 +Daylight multipliers: 2.155587 0.934705 1.481107
 +Camera multipliers: 2.015625 1.000000 1.671875 0.000000
 +</code>
 +===== Comparison with a Compact Camera =====
 +
 +^              ^ Canon S120         ^ Olympus E-M10 Mark II\\ with M.ZUIKO 12-42 mm pancake lens  ^
 +^ Weight       | 217 g              | 514 g                  |
 +^ Size         | 100 x 59 x 29 mm   | 120 x 83 x 75 mm       |
 +^ JPEG Images  | 4000 x 3000 24bit  | 4608 x 3456 24bit      |
 +^ RAW Images   | 4192 x 3062 36bit  | 4640 x 3472 36bit      |
 +
 ===== Web References ===== ===== Web References =====
  
   * **[[https://www.wrotniak.net/photo/m43/em1.1-picmode.html|Olympus Picture Modes]]**   * **[[https://www.wrotniak.net/photo/m43/em1.1-picmode.html|Olympus Picture Modes]]**
   * **[[https://www.wrotniak.net/photo/m43/em1.1-picmode.f.html|i-Enhance, Vivid, Natural and Muted comparison]]**   * **[[https://www.wrotniak.net/photo/m43/em1.1-picmode.f.html|i-Enhance, Vivid, Natural and Muted comparison]]**
 +  * **[[http://lclevy.free.fr/cr2/|Understanding Canon RAW .CR2 files]]**
 +
doc/appunti/hardware/olympus-e-m10-mark-ii.txt · Last modified: 2020/10/31 18:34 by niccolo