- From: Gregg C Vanderheiden <greggvan@umd.edu>
- Date: Wed, 11 Jan 2017 00:04:24 -0500
- To: "Patrick H. Lauke" <redux@splintered.co.uk>
- Cc: GLWAI Guidelines WG org <w3c-wai-gl@w3.org>
> On Jan 10, 2017, at 6:46 PM, Patrick H. Lauke <redux@splintered.co.uk> wrote: > > I'm failing to see why the "33% of any 10 degree visual field on the > screen" has the issues (1 and 2) you noted, but the existing ".006 steradians within any 10 degree visual field on the screen (25% of any 10 degree visual field on the screen) " from WCAG 2.0's current definition for general flash and red flash thresholds doesn't? > > Does "visual field on the screen" not, in essence, mean the full size of the screen/viewport? And if not, isn't the general flash/red flash definition not also fundamentally flawed as it can't take into account physical screen size / viewing distance / etc, regardless of the existence of a "tool"? Hi Patrick I said that it DID have the same problems — and worse. But there was a tool that did the measurement automatically — so no one had to figure out the bits. And I suggested you might look at that approach here too. And gave other advice that related to the flash work. Read my comments again. Maybe I didnt write them clearly enough. Gregg
Received on Wednesday, 11 January 2017 05:05:04 UTC