Blue

[stapo49]

Sent from my SM-G965F using Tapatalk

 

[johngpt]

five faces of Lisa
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The DaVinci exhibit came to ABQ last year.
Along one wall of the Mona Lisa room were these five reproductions created from the work of Pascal Cotte.
Cotte using a multispectral camera photographed Lisa using quite a few different light wavelengths.
This allowed analysis of various depths of layers in the painting.
Much like how the Jet Propulsion Laboratory analyzes astrophotos and assigns colors in our visual specturm, Cotte combined information from the various wavelengths using what he calls the Layer Amplification Method.

On the wall shown here from left to right are:
False Color Infrared
Color Today
Varnish Removed (showing the blue I used as an excuse to post here at TPF)
Reverse False Color Infrared
Image of Genuine Color

That last one on our right, the image of genuine color is the representation of how the painting may have first looked when completed over 500 years ago. The multispectral analysis allowed the calculation of the "spectral response curve" for every pixel of varnish on the painting and removing it digitally to reveal what are thought to be the original colours.

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[Fred von den Berg]

 

[Fred von den Berg]

 

[zulu42]

 

[webestang64]

 

[johngpt]

plush

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[zulu42]

 

[johngpt]

old town window

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[Philmar]

Central market monster - Progreso, Mexico by Phil Marion (177 million views - thanks), on Flickr

 

[Derrel]

High School swimming meet, 200 millimeter lens with VR

Part of the lens across America exercise that we did a few years ago here on TPF. This a close-up view of bubble wrap.

 

[SquarePeg]

Ice1 by SharonCat..., on Flickr

 

[Philmar]

Visitor reflected by Vietnam War Memorial - Washington DC by Phil Marion (177 million views - thanks), on Flickr

 

[johngpt]

for sale west of Socorro

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[Philmar]

Watching the action in Praca Tiradentes - Ouro Preto by Phil Marion (177 million views - thanks), on Flickr