DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - How do you take a representative photo of a red or purple bloom?

**Lapsinuibense** · 02-09-2011, 09:30 PM

My point, Ricky, is that it is not the gray card that renders color accurately, whether digitally or film. If it were true, then one would not need to match the film with the light source, and white balance would be unnecessary.

What happens if you use a gray card under florescent lights, without fixing the white balance for that light source. Will you get accurate color?

One of your sources clearly states: "The grey card is put into the image so that the light falling on the subject also falls on the grey card. The white balance reading is taken from the card..." (Emphasis mine)

None of your sources negate that concept, so sorry, Ricky. my statement that the gray card doesn't really have anything to do with rendering color, as such, stands. It's white balance, whether with a gray card or a white card, that determines color accuracy.

I didn't check Wikipedia, but if it leaves out matching film to light source and white balance, it certainly is incomplete.

02-09-2011, 09:30 PM	#2
Lapsinuibense Join Date Oct 2005 Posts 448 Senior Member	My point, Ricky, is that it is not the gray card that renders color accurately, whether digitally or film. If it were true, then one would not need to match the film with the light source, and white balance would be unnecessary. What happens if you use a gray card under florescent lights, without fixing the white balance for that light source. Will you get accurate color? One of your sources clearly states: "The grey card is put into the image so that the light falling on the subject also falls on the grey card. The white balance reading is taken from the card..." (Emphasis mine) None of your sources negate that concept, so sorry, Ricky. my statement that the gray card doesn't really have anything to do with rendering color, as such, stands. It's white balance, whether with a gray card or a white card, that determines color accuracy. I didn't check Wikipedia, but if it leaves out matching film to light source and white balance, it certainly is incomplete.
	Quote