The E-510 and Fuji are almost a dead match now. What surprises me is
the lack of color separation (levels of) in the green leaves of the
Fuji. Interesting.
The E-1 is still quite the baby, though.
:)
On Fri, Aug 28, 2015 at 1:52 PM, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
> Thanks, Ken. I put up a more optimized treatment of the Fuji Sunlight
> image, probably while you were typing. You may not have seen it. It comes
> out fine, but, as you and I would expect, it is not quite as warm as the E-1
> image.
>
> Jim Nichols
> Tullahoma, TN USA
>
> On 8/28/2015 1:46 PM, Ken Norton wrote:
>>
>> Thanks, Jim.
>>
>> As has already been pointed out, the color balance is off a bit on
>> them for direct comparison, however, it does confirm something. While
>> Olympus did a fantastic job of getting the 510 to come close, it's
>> still not quite there. The Fuji is probably capable of getting a
>> little closer as it also uses the double red channel bump.
>>
>> As an RGB array is unable to see purple, it only sees red, green and
>> blue. That's fine as most purples are actually made up of both blue
>> and red. But if it's a true violet color, there is no blue or red,
>> it's actually violet. The problem is that in the spectrum, it only
>> appears in the blue pixels. What Olympus and Fuji have done is have
>> the red pixels have a dual sensitivity, one up in the reds, and the
>> other down in violet. That way, both blue and red pixels get levels
>> and you'll end up with purple.
>>
>> The big shift, in these flower pictures is in both UV and IR. The E-1
>> not only has a hyper-active (in comparison) near-UV sensitivity bump
>> in the red channel, but the red channel itself has an extended near-IR
>> response. I have found that when shooting weddings with the Olympus
>> E-1 that it is beneficial to have some flash in most pictures. Doesn't
>> take much, but you really need some. What this does is keep the color
>> of the flowers and some fabrics (especially purple silk) consistent
>> whether in sunlight or shadow. The shift is pretty dramatic with the
>> E-1. Where most cameras tend to just turn everything blue, regardless
>> of lighting, the E-1 will have pretty wild swings in color depending
>> on the light.
>>
>> Another related aspect, which a matched color balance would probably
>> indicate, is that the E-1 maintains a slightly richer tone in the
>> shadows.
>>
>
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--
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
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