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E-M1 ISO 160

Discussion in 'Olympus Cameras' started by robcee, Feb 5, 2016.

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  1. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    I posted this on a flickr group, but they're not the most technical bunch. It's here, for reference:

    Olympus PEN-F,OM-D E-M1, E-M10, E-M5 and E-M5II user | Flickr - Photo Sharing!

    A curious thing happened on a photo walk with my wife yesterday. She bought an EM1 this weekend and wanted to try it out, so we went on a little stroll through the neighborhood.

    She was in Auto ISO, set to 200-3200, Monotone mode and shooting into a bright sunny day. The only other unusual setting was 3:2 aspect.

    Here's what she got:

    24204679994_b650b4b2a5_z. P2040065

    Take note of the EXIF data. It says ISO160. What? I asked to see the RAW file in Lightroom and sure enough, it claims ISO160.

    She hit the shutter ceiling at 1/8000s, but I'm wondering if there's some secret ISO LOW recovery mode I wasn't aware of? There's no highlight blowouts in that image like I'd expect in a true ISO LOW / ISO 100 shot on these cameras so I'm wondering if they're really capable of ISO 160.

    I had a GX1 prior to switching to Olympus and it could shoot ISO 160 pretty well, but this is a first for me and olympus. I have to perform some science to see if I can replicate it on my own camera.

    We're both on Firmware 4.1.
     
  2. Growltiger

    Growltiger Mu-43 Top Veteran

    643
    Mar 26, 2014
    UK
    I don't see any EXIF data?
     
  3. Splitprism

    Splitprism Mu-43 Regular

    142
    May 10, 2013
    Angra, Brazil
    Wierd, The ISO value in Flickr EXIF is showing 200 if I click the link next to the picture, but following the full link at the top of the page shows ISO at 160. Strange
     
  4. Splitprism

    Splitprism Mu-43 Regular

    142
    May 10, 2013
    Angra, Brazil
    • ƒ/1.8
    • 25.0 mm
    • 1/800
    • 200
    • Flash (auto, did not fire)
    • Hide EXIF
    • Image Description - OLYMPUS DIGITAL CAMERA
    • Make - OLYMPUS IMAGING CORP.
    • X-Resolution - 72 dpi
    • Y-Resolution - 72 dpi
    • Software - Adobe Photoshop Lightroom 5.3 (Macintosh)
    • Date and Time (Modified) - 2016:02:05 08:37:48
    • Artist - Deb Richardson
    • Copyright - Deb Richardson
    • ISO Speed - 200
    • Sensitivity Type - Standard Output Sensitivity
    • Exif Version - 0230
    • Date and Time (Original) - 2016:02:04 13:47:38
    • Date and Time (Digitized) - 2016:02:04 13:47:38
    • Exposure Bias - +0.3 EV
    • Max Aperture Value - 1.8
    • Metering Mode - Multi-segment
    • Light Source - Unknown
    Sorry, ignore me, that EXIF data is from another photograph.
     
  5. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    copied from the linked image above:

    • Image Description - OLYMPUS DIGITAL CAMERA
    • Make - OLYMPUS IMAGING CORP.
    • X-Resolution - 72 dpi
    • Y-Resolution - 72 dpi
    • Software - Adobe Photoshop Lightroom 5.3 (Macintosh)
    • Date and Time (Modified) - 2016:02:05 08:37:49
    • Artist - Deb Richardson
    • Copyright - Deb Richardson
    • ISO Speed - 160
    • Sensitivity Type - Standard Output Sensitivity
    • Exif Version - 0230
    • Date and Time (Original) - 2016:02:04 13:50:48
    • Date and Time (Digitized) - 2016:02:04 13:50:48
    • Exposure Bias - +0.3 EV
    • Max Aperture Value - 1.8
    • Metering Mode - Multi-segment
    • Light Source - Unknown
    • Color Space - sRGB
    • File Source - Digital Camera
    • Custom Rendered - Custom
    • Exposure Mode - Manual
    • White Balance - Manual
    Screen Shot 2016-02-05 at 12.37.24 PM.
     
  6. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    um, yeah, you pasted one of the adjacent photos. See above for the linked image's EXIF data.
     
  7. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    click the picture in the first post.
     
  8. Growltiger

    Growltiger Mu-43 Top Veteran

    643
    Mar 26, 2014
    UK
    Based on the other photo and the very high shutter speed you used, I reckon that the ISO was 1600 not 160. Could it be a bug in Flickr?
    I don't see how it could be much less than that with that shutter speed.

    If you still have it in the camera, check the ISO there.
     
  9. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    Nope, not 1600. Like I said, it was a bright sunny day and with that much sky at f1.8 it peaked out at 1/8000s @ ISO 200.

    We went on another photo walk today and while I couldn't duplicate it, my wife noticed a couple of times where her ISO dipped into LOW and flashed on her info screen while composing a shot.

    Kind of amazed I've never seen this before, but it appears to be an undocumented feature.
     
  10. Klorenzo

    Klorenzo Mu-43 All-Pro

    Mar 10, 2014
    Lorenzo
    Yes, it happens to me too. The ISO 200 to ISO LOW range is splitted into ISO 160 and 125.
    Place the camera in manual mode, set the shutter speed until you get the Auto-ISO just down to 200. Now drop by one third more and take a shot, the camera show ISO-LOW blinking but you are at 160 (in the EXIF). You have two more click before the exposure begins to get brighter.
     
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  11. Clint

    Clint Mu-43 All-Pro

    Apr 22, 2013
    San Diego area, CA
    Clint
    When I set the ISO to Low, the EXIF reads 100 ISO. The 1/8000, f/1.8, ISO 160 exposure would be about the correct exposure for full daylight with some compensation to make the whites, white. Outside of the camera not using the defined ISO limits (which in this case was a good thing) I don't see anything unusual.
     
  12. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    it's just unusual in that it's not really documented and inaccessible as a selectable setting. The ISO 160 image looked cleaner than ISO 100 and I'd probably use that in bright sun.
     
  13. Clint

    Clint Mu-43 All-Pro

    Apr 22, 2013
    San Diego area, CA
    Clint
    Olympus has been really poor about documenting all of the capabilities of their gear. Come to think of it, none of the rest of the manufactures cover their bases really well, opening the door for people to explore and write abut their findings.
     
    • Like Like x 1