That makes interesting reading, Mike, but is pretty deep for someone like me
who last dealt with college math in 1950. ;~)
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: <usher99@xxxxxxx>
To: <olympus@xxxxxxxxxxxxxxxxx>
Sent: Monday, April 02, 2012 5:45 PM
Subject: [OM] Better color
> Some might recall a cryptic reference to SMI ( Sensitivity Metamerism
> Index) in a comment of one of Jim's nice images. Just in case it is of
> some interest, here is the link to better explanation.
>
> http://www.dxomark.com/index.php/About/In-depth-measurements/Measurements/Color-sensitivity
>
> A value of 50 is the difference in color between a daylight illuminant
> and an illuminant generated by fluorescent source--a "modest" error.
> Cell phone cams said to be in 40 range.
>
> Note DSLR's are crunched into the 75-85 range but still appears
> interesting with no claim to be a be-all/end-all measure of color
> performance . Sony A900 is waaay up there and considered to have
> excellent and
> accurate color at base ISO. Stronger colored filter array does lead to
> worse higher ISO performance as fewer photons are available.
> Canyon 5D classic in a blinded study judged to have excellent skin
> tones (a tough test) and 5DII perhaps slightly less so. 5Dc way up
> there at 84.
> Hmmm.
>
> Color me correctly, Mike
>
> Ranks:
>
>
> A900: 87
> 1Dsiii: 86
> A77: 86
> Nex-7: 85
> 1Dsii: 85
>
> A550: 84
> 5D: 84
> Nex-5N: 84
> Nex-5: 84
> A55: 84
>
> Nex-C3: 83
> D700: 83
> KM 7D: 83
> D2Xs: 83
> A100: 82
>
> A850: 82
> 1D IV: 82
> S5 Pro: 82
> NX11: 81
> IQ180: 80
>
> EP3: 80
> 5Dii: 80
> D3x: 79
> D800: 78
> D7000: 78
>
> K5: 78
> 7D: 78
> T2i: 78
> D4: 77
> X100: 77
>
> GH2: 77
> 1Ds: 77
> M9: 76
> G12: 76
> LX5: 75
> --
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>
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