Re: Panama 1978: results

John Furnes

Thanks for the instructive and direct evaluation of my image. It is amazing that the obvious is not so obvious when you are immersed in a problem. Normally, I have problems with too much magenta or too much yellow.


I tried to start over, and after having learned that the FFT method does away with Moiré, I tried it as well. It needs some practise, but impresses me with its simplicity.

Well, the result of the corrected version came out better, but it seems I have some way to go before this is satisfactory.

Just for fun, I tried to print it, and found that the Moiré was still lurking below.

However, the colour cast disappeared, and I did get better colours.


John Furnes



From: <> On Behalf Of Dan Margulis via
Sent: 30. juni 2020 22:39
Subject: Re: [colortheory] Panama 1978: results



On Jun 30, 2020, at 2:29 PM, John Furnes <johnfurnes@...> wrote:


I am 714, and can now see how blue it is.


Cyan, really, but you don’t have to see it, you can measure it, just as James could measure the magenta cast in his #721,


#1 stone in wall, to left of child’s knee

EXPECTED: possibly 0a0b, more probably positive in both A and B and approximately equal, but a lot of variation due to people wanting to incorporate a “sunny” look.

#714: 43L (1)a (7)b

par: 40L 4a 4b


#2 top of head of woman seated with back to us


#714: 53L 6a (4)b

par:  51L 11a 14b


In both cases both the A and especially the B are seriously shifted toward coolness.


As in James’s case, neither of these points is at all important to the composition. What they *are* important for is that they can indicate that something is wrong in a way that my fleshtone, say, or the sloths cannot. You have that woman’s hair as being more blue than it is yellow. Impossible.


As with James, running Auto Color significantly improves this image.




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