Dear Greame and list, i1Diagnostics does indeed automatically detect and correct this lamp problem with a „lamp restore“ - that’s what happened when I tested my overly drifting i1Pro2 a few weeks ago. This process was triggered and started automatically, drifting problem was gone afterwards. Since I didn't know what had just happended to my device, I wrote an E-Mail to X-Rite support and got a reply from Liane Mai, where she explained the behavior and the reason with the tungsten deposits on the bulb glass. Pity is that I must have accidentally deleted her e-mail so I can’t directly quote her reply … Best Regards, Ulf Wittenberg

Am 23.02.2016 um 21:00 schrieb colorsync-users-request@lists.apple.com:

Von: Graeme Gill <graeme2@argyllcms.com> Betreff: Aw: i1Pro weirdness & fix Datum: 23. Februar 2016 02:13:18 MEZ An: ColorSync <colorsync-users@lists.apple.com> Antwort an: graeme@argyllcms.com

Alexey Gribunin wrote:

...

By the way, just as an idea - is it possible to make special "cleaning" utility for i1Pro and Spectrolino, which will turn lamp on forcibly for some seconds to "clean" it?

Looks like X-Rite beat me to that - someone pointed out that there is a function exposed in BabelColor PatchTool called "lamp restore" that appears to use a new function in the i1Pro SDK (V4.2.2 or later). See <http://www.babelcolor.com/index_htm_files/PatchTool_Help.pdf> page 87. This sounds a lot like it is intended to deal with what I discovered.

[ From my own limited experience with my instruments, I'm wondering if i1Pro2's are more prone to it ? ]

It's possibly too that a recent copy of X-Rite's i1Diagnostics also includes such a function, although it doesn't seem obvious what or if it is doing this kind of thing.

I'll add an option to ArgyllCMS spotread to diagnose and attempt to fix this problem in i1Pro's as well, and be a bit more up-front about what's going on.

Graeme Gill.

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