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Re: Next step for DAP Ambient Light Events

From: Doug Turner <dougt@mozilla.com>
Date: Mon, 27 Aug 2012 14:00:18 -0700 (PDT)
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Cc: www-style@w3.org, public-device-apis@w3.org, Daniel Glazman <daniel.glazman@disruptive-innovations.com>, Dzung D Tran <dzung.d.tran@intel.com>
Message-ID: <1556164439.1705611.1346101218310.JavaMail.root@mozilla.com>
I am getting different results on the Galaxy Nexus (ICS).  Close to double what Tab saw.

~380 LUX in the office type lighting.
~28000 LUX in very bright light.






----- Original Message -----
From: "Tab Atkins Jr." <jackalmage@gmail.com>
To: "Dzung D Tran" <dzung.d.tran@intel.com>
Cc: "Doug Turner" <dougt@mozilla.com>, www-style@w3.org, public-device-apis@w3.org, "Daniel Glazman" <daniel.glazman@disruptive-innovations.com>
Sent: Monday, August 27, 2012 11:20:27 AM
Subject: Re: Next step for DAP Ambient Light Events

On Mon, Aug 27, 2012 at 10:59 AM, Tran, Dzung D <dzung.d.tran@intel.com> wrote:
> A quick un-scientific test:
>
>                                     Nexus 7 tablet (JB)       Galaxy Nexus Phone (ICS)                  Xolo Phone (ICS)
>
> Office lighting:           ~550 lux                                    ~170                                                 ~700
>
> Flash light (1"):          ~40,000                                   ~12000                                             ~48,000

Interesting.  I'd like to see a few more results, to see if the Galaxy
Nexus is just an outlier, or if things are generally that spread out.

If they turn out to be that spread out, though, then I recommend
defining the named light levels not in absolute lux values, but
instead just defining them generally and noting that devices should
map their lux ranges as appropriate (with a note that this lack of
definition is due to the significant divergence in detected lux across
devices).

~TJ
Received on Monday, 27 August 2012 21:00:51 GMT

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