- From: Doug Turner <doug.turner@gmail.com>
- Date: Thu, 13 Sep 2012 11:03:25 -0700
- To: "Tab Atkins Jr." <jackalmage@gmail.com>
- Cc: "fremycompany_pub@yahoo.com" <fremycompany_pub@yahoo.com>, "SULLIVAN, BRYAN L" <bs3131@att.com>, Dzung D Tran <dzung.d.tran@intel.com>, François Remy (pub) <fremycompany_pub@yahoo.fr>, Marcos Caceres <w3c@marcosc.com>, Doug Turner <dougt@mozilla.com>, CSS WG <www-style@w3.org>, "public-device-apis@w3.org" <public-device-apis@w3.org>
On Thu, Sep 13, 2012 at 10:23 AM, Tab Atkins Jr. <jackalmage@gmail.com> wrote: > On Thu, Sep 13, 2012 at 10:12 AM, fremycompany_pub@yahoo.com > <fremycompany_pub@yahoo.com> wrote: >> Would you really want to change the site color’s scheme to high contrast >> black and white at only 1000 lux? If Microsoft data are to be believed, I >> would set the threshold between 10 000 and 100 000, depending of the screen >> brightness and reflectance. >> >> What do you think? > > Yes, 1000 lux is far too little. > > "bright" is supposed to mean "direct sunlight, or similarly bright > conditions that make it hard to see things that aren't high-contrast". > Based on Wikipedia's lux table <http://en.wikipedia.org/wiki/Lux>, > I'd set "bright" to start around 10k lux. > > Similarly, "dim" is supposed to mean "dark enough that the light > produced by a white background is eye-straining or distracting", so > 300 is far too high (given that it's roughly office lighting). I'd > have it start at 50 lux or so. > > ~TJ Okay. Sounds fair. Shall we keep these up to the UA, and put the suggested ranges in non-normalized text? Doug
Received on Thursday, 13 September 2012 18:04:01 UTC