[argyllcms] Re: Using an i1 to measure FWA content?
- From: Martin Weberg <martin.weberg@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 8 Feb 2010 13:07:45 +0100
For completeness, here we go again using v1.1.0. Notice the bump in
plot 2 (St. dev. at 410nm is 0.2 (n=3)).
See attached pdf's for spectral plots.
Paper 1
v1.0.3
95.5 0.6 -2.1 / no filter
95.5 -0.1 0.1 / no filter + FWA D50 no UV
95.5 -0.8 3.3 / UV filter
v1.1.0
95.5 0.6 -2.1 / no filter
95.4 -1.2 3.0 / no filter + FWA D50 no UV
95.5 -0.8 3.5 / UV filter
No filter difference to UV filter: 5.5 dE00
FWA comp. difference to UV filter: 0,7 dE00
Paper 2
v1.0.3
95.9 1.2 -6.9 / no filter
95.8 -0.2 -2.9 / no filter + FWA D50 no UV
96.0 -0.5 -1.5 / UV filter
v1.1.0
95.9 1.2 -6.8 / no filter
95.7 -1.8 1.1 / no filter + FWA D50 no UV
96.0 -0.4 -1.7 / UV filter
No filter difference to UV filter: 8,1 dE00
FWA comp. difference to UV filter: 3.3 dE00
Paper 3
v1.0.3
96.4 1.0 0.8 / no filter
96.3 0.9 1.2 / no filter + FWA D50 no UV
96.5 0.6 2.1 / UV filter
v1.1.0
96.3 1.0 0.8 / no filter
96.3 -0.3 4.0 / no filter + FWA D50 no UV
96.5 0.6 2.1 / UV filter
No filter difference to UV filter: 3.5 dE00
FWA comp. difference to UV filter: 2.1 dE00
Paper 4
v1.0.3
95.4 1.9 -6.1 / no filter
95.3 0.5 -1.9 / no filter + FWA D50 no UV
95.4 0.1 0.3 / UV filter
v1.1.0
95.4 1.9 -6.1 / no filter
95.2 -0.9 1.8 / no filter + FWA D50 no UV
95.4 0.1 0.3 / UV filter
No filter difference to UV filter: 8,1 dE00
FWA comp. difference to UV filter: 2,0 dE00
Paper 5
v1.0.3
96.6 1.3 -0.4 / no filter
96.6 0.7 1.4 / no filter + FWA D50 no UV
96.8 0.3 3.1 / UV filter
v1.1.0
96.6 1.2 -0.3 / no filter
96.5 -0.6 4.4 / no filter + FWA D50 no UV
96.8 0.3 3.4 / UV filter
No filter difference to UV filter: 5,1 dE00
FWA comp. difference to UV filter: 1,6 dE00
Paper 6
v1.0.3
93.7 2.7 -8.3 / no filter
93.6 1.1 -3.8 / no filter + FWA D50 no UV
93.8 1.1 -3.2 / UV filter
v1.1.0
93.7 2.7 -8.5 / no filter
93.4 -0.4 0.4 / no filter + FWA D50 no UV
93.8 1.2 -3.3 / UV filter
No filter difference to UV filter: 8,4 dE00
FWA comp. difference to UV filter: 4,1 dE00
All that those dE's are saying is that FWA compensation gives results
closer to UV filtered readings then non filtered readings for paper
white :-). Is it useful..., maybe. It gives a measure of how close
spotread FWA D50_0.0.sp comp. readings equals/emulates UV filtered
readings on paper white using the Spectrolino.
Martin Weberg
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