AFAIK, they average the channels. The only one showing
separate channels is some Fuji.
Regards
Albano
--- Glen [EMAIL PROTECTED] wrote:
I've been told that a lot of DSLR cameras use only
the green channel when
calculating the histogram, instead of the full RGB
data. Does the Pentax
At 12:11 AM 12/1/2005, David Mann wrote:
On Dec 1, 2005, at 12:40 PM, Rob Studdert wrote:
I just did a QD test using my *ist D and the camera histogram
responds
similarly to green and red. However what I didn't check is how the
histogram is
calculated, possibly if one channel is clipped and
Albano Garcia [EMAIL PROTECTED] wrote:
AFAIK, they average the channels. The only one showing
separate channels is some Fuji.
The Canon 1D-II and 1Ds-II will display separate R, G and B histograms.
So will the Sigma SD10, if you're interested! ;-)
--
Mark Roberts
Photography and writing
I got it from here:
One issue that has come up is that with the possible
exception of the Fuji S2 Pro all other current DSLRs
only display overall luminosity histograms and not
individual channel brightness. This means that it's
possible to blow out one of the R G or B channels
without realizing
Albano Garcia [EMAIL PROTECTED] wrote:
I got it from here:
One issue that has come up is that with the possible
exception of the Fuji S2 Pro all other current DSLRs
only display overall luminosity histograms and not
individual channel brightness. This means that it's
possible to blow out one of
Mark Roberts wrote:
Albano Garcia [EMAIL PROTECTED] wrote:
I got it from here:
One issue that has come up is that with the possible
exception of the Fuji S2 Pro all other current DSLRs
only display overall luminosity histograms and not
individual channel brightness. This means that it's
On 1 Dec 2005 at 10:22, Glen wrote:
In general, the histogram is a big help in setting exposure and contrast
settings on the camera, but there are still some cases where I think it
gives misleading information. Some sort of clipping indicator would be a
nice addition to the camera's
At 06:15 PM 12/1/2005, Rob Studdert wrote:
On 1 Dec 2005 at 10:22, Glen wrote:
In general, the histogram is a big help in setting exposure and contrast
settings on the camera, but there are still some cases where I think it
gives misleading information. Some sort of clipping indicator would
On 1 Dec 2005 at 17:46, Glen wrote:
Okay, but I've had the histogram fail to show clipping when shooting in
JPEG mode. If the histogram is based on JPEG mode, and the shooting mode is
JPEG
mode, then an ideal histogram should always indicate the presence of any
clipping, shouldn't it?
No
I've been told that a lot of DSLR cameras use only the green channel when
calculating the histogram, instead of the full RGB data. Does the Pentax
*istDS display a true RGB histogram, or not? It seems that there have been
times when the histogram hasn't been entirely accurate for me. I got
On Nov 30, 2005, at 13:11, Glen wrote:
I've been told that a lot of DSLR cameras use only the green
channel when calculating the histogram, instead of the full RGB
data. Does the Pentax *istDS display a true RGB histogram, or not?
It seems that there have been times when the histogram
On 30 Nov 2005 at 14:11, Glen wrote:
I've been told that a lot of DSLR cameras use only the green channel when
calculating the histogram, instead of the full RGB data. Does the Pentax
*istDS display a true RGB histogram, or not? It seems that there have been
times
when the histogram
On Dec 1, 2005, at 12:40 PM, Rob Studdert wrote:
I just did a QD test using my *ist D and the camera histogram
responds
similarly to green and red. However what I didn't check is how the
histogram is
calculated, possibly if one channel is clipped and the others are
low the
aggregate RGB
I would expect that to be true of all digital cameras as exposure
(luminance) is taken only from the 2 green pixels (each interpolated
pixel is made up of two green and one each red and blue) which most
closely match the response of the human eye.
(Disclaimer: the above is vastly simplified,
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