
Re: Problems with Darkroom 9.1 Core Green Screen
Thanks for the replies guys.
ian griffiths wrote:
With my limited knowledge of how GS in Darkroom works I would assume that it just isn't designed to use .png's as subject images, perhaps as there appear to be different ways the .png process can interlace a clear background?
When trying to import the transparent PNG file into Darkroom, I wasn't attempting to use the green screen function because I know that there isn't any chroma colour for it to work with. I simply created a border with a background graphic and then overlaid a smaller photograph on top into which I imported the PNG. I should point out that the PNG looks incorrect in Darkrooms viewer, so I am not surprised it gets it wrong when combined.
I should point out that in Windows explorer and photoshop, the transparent PNG gets rendered correctly.
Interestingly, if I add the PNG as a graphic, rather than a photo, it works perfectly. Of course, I can't then add a different picture without editing the border, so that's a non-starter.
Quote:
In your "Girl with a broken arm" photo how did you light the subject?
Single soft box at 45 degrees to the subject.
I can't quite get me head around why the 'blotchiness' appears on the dress. I've opened the image in photoshop and taken colour samples, and there's no green cast to it. Typically, the cream area is 208,192,167 and the black is 43,44,41. Her hair is 197,155,95.I f I sample the green background it is 79,130,55 - so there's a good separation between the colours.
If you look more closely at the dress, it appears that the artefacts are either triangular or diamond shaped, which is odd.
Duncan Harris wrote:
If the option is still there in 9 have you tried the old engine ?
Thanks Duncan, I will give it a go and see if it makes a difference.
Simon
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Simon Coates Event PhotographyRead my event photography blogNever argue with idiotsThey drag you down to their level and then beat you with experience