b/w photography
Out of context: Reply #15
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- J0
The answer is...
Colour film *evenly* captures the full spectrum, if it didn't, the colours wouldnt not look true to life (ie. your images might have a slight blue tint for example)
Black and white film *does NOT evenly capture* the full spectrum. If you imagine a graph with the full colour spectrum running across the bottom axis, and a line running across, plotting a black and white films' sensitivity to those colours, it would waver up and down, not hugely but notably.
Therefore, desaturating a coloured image will not look the same as an image catured on black and white film (setting your digital camera to mono will probably NOT emulate b&w film guys - sorry)
The best way to emulate b&w film, is to use b&w film.
The second best way, is to either manually bias the spectrum in photoshop before desaturating (tricky-ish), or just choose one of the R, G or B channels created by your digital camera and isolate it (only use that one!) - you may find the blue channel a little 'noisy' from digital pix.
I Hope thats helpful.