Very interesting. More information: I found an image of the bottom of an i1 Pro. The label on the main unit indicated UV filter, whereas mine does not. It's becoming more and more clear that my unit has a mismatched filter. I contacted the person who sold me the instrument, and he said he would see if he has the correct filter (no UV filter) for my unit. -------------------------------------------- On Mon, 10/6/14, Steve Winter <steve.winter@xxxxxxxxxxxxxxx> wrote: Subject: [argyllcms] Re: i1 pro - eye one pro - spotread error To: argyllcms@xxxxxxxxxxxxx Cc: steviewunda@xxxxxxxxx Date: Monday, October 6, 2014, 5:58 PM Hi Graham - my i1Pro Rev D output: Capabilities flag = 0x66fc Can read ambient Physical filter flag = 0x82 Is fitted with Ultra Violet filter Cheers, Steve On 6/10/2014 9:15 p.m., Graeme Gill wrote: > Alan Rockwood (Redacted sender alanrockwood2000@xxxxxxxxx for DMARC) wrote: >> Capabilities flag = 0x6fc >> Physical filter flag = 0x80 > Well, it's a bit of a mystery. As far as I understand it, the firmware > of your instrument says that it doesn't have a UV filter. > > It would be interesting if someone else with an i1pro rev D > with a UV filter would post the above two lines from "spotread -D2" > output from their instrument. > > Graeme Gill. > >