1. Maxwell Zwe's Avatar
    Hi, everyone!

    After relooking at this issue for a while, I thought that I might post it here for some clarification, or just that I was doing something wrong.

    So, the issue was regarding Lumia 1020's shutter speed whenever xenon flash was enabled. It would appear that with the minimum shutter speed was capped to 1/1000 seconds, instead of the usual 1/16000 seconds that we would have when we take a photo without flash.

    Here are the screenshots that I have attached.wp_20150125_01_17_14_pro.jpgwp_ss_20150125_0001.jpgwp_ss_20150125_0002.jpg

    The order of the photos were a little messed up, so I will explain what's happening:

    The first one is the resulting photo from the capture; it should be darker if the shutter speed is truly 1/16000 s.

    The second one is the screenshot of the viewfinder before taking the photo. Do take note of the settings that I have used: ISO-value is 100, 1/16000 sec shutter speed, flash is on, focus is pre-set...

    The third screenshot is the EXIF data; it turns out that the camera used a shutter speed of 1/1000 seconds instead of the desired 1/16000 s.

    So, what I would like to know is, what is stopping my phone from using a shutter speed faster than 1/1000 seconds when flash is enabled? Is it because of some automatic algorithm, or simply a hardware limitation whereby the xenon flash has a minimum shutter speed of 1/1000 sec?

    Thanks, and regards,
    Valentine/Maxwell Zwe
    01-24-2015 11:28 AM
  2. Christus Hirschus's Avatar
    I think it's almost impossible to reach a shutter speed of 1/16000 and sync with the flash at the same time.

    Anyway 1/1000 is still a lot faster than most compact cameras or even dslr's when usig the flash.
    gpobernardo and Maxwell Zwe like this.
    01-24-2015 11:43 AM
  3. msirapian's Avatar
    I had this exact question to Juha Alakarhu when I got my 1020. His answer was that with an exposure time < 1/1000s, the flash can't sync. So if you want to force the shutter speed, be sure to select a value >=1/1000s, if not, the flash won't fire.
    01-26-2015 09:28 AM
  4. Maxwell Zwe's Avatar
    Ah, I see. Then what I have read on other blogs and websites have been incorrect; most (if not, all) stated that the flash can sync with the minimum shutter speed (1/16000 s).
    01-28-2015 04:38 AM

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