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The better side: Springtime with my Sigma camera! ...

Started Mar 24, 2022 | Discussions thread
xpatUSA
xpatUSA Forum Pro • Posts: 23,017
Re: Further nice Pictures instead of tech depression :-)

D Cox wrote:

The English name for the Hieracium flowers is Hawkweeds. I agree the yellow is difficult to get right -- a program with HSV sliders helps.

The free program "Michael Vinther's Image Analyzer" has a nice version done as a colour circle. (Menu item "Color Tone Adjustment").

I suspect that the filter in the camera doesn't completely cut out Infra-Red. Look at the spectra here

http://www.reflectance.co.uk//simplesearch.php?search=hieracium

(Scroll down in a data window to see a curve).

Although the spectra shown cover only the visible, the curve is heading off toward the IR with no sign of dropping off.

Don

Thanks for the link - I had misplaced the URL for that site.

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Panasonic Lumix DMC-LX1 Sigma SD9 Panasonic Lumix DC-G9 Panasonic Leica DG Macro-Elmarit 45mm F2.8 ASPH OIS Sigma 17-50mm F2.8 EX DC OS HSM +11 more
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