I have noticed instability as well, with my i1DP3 meter. My fluctuation is typically +-2% with occasional outliers up to maybe +-4%. This is with a plasma, measuring in direct contact. Would the heat cause instability? I let the meter stabilize in temp for at least 30 minutes.
I'm very interested in any tool that gives me more raw output from the meter, in particular a graph of output vs time. Does anything like that exist?
Also some nitpicks/feedback:
- "Y target" is not visible when using small screens -- my 11" netbook cuts it off and the scrollbar does not scroll down far enough
- Calibrate meter always tells me that I don't need to calibrate; if that's because of the meter that I have, then a message stating so would prevent me from trying more than once
- Is it possible to display gamma value during continuous measures? When adjusting gamma I used Y to do, attempting to hit target Y -- which is perhaps equally as good except that I couldn't read target Y due to the above
- Is there documentation for all of the preferences/options? I noticed some options specific to AVSHD 709 that I'm unsure whether I should enable
And lastly, is there a "preferred" calibration disc? I have used both AVSHD and GCD and have no problems with either -- I assume that they are equally correct in their patterns but wanted to ask just to make sure.
Also, if you'd like some help with adding tooltips to the options I would be happy to chip in some time to do so and provide you a patch, but I'll need documentation to work off of.