First, I agree that blown highlights can just be another way to show the
right part of the histogram. However, that's not always true: just think of
a bright sky in a corner of a backlit building almost filling the picture:
the histogram could well describe the light distribution within the backlit
building and you'll be fooled by a perfect histogram missing the sky (far
right, outside the histogram scale).
In my opinion, the blown highlights should be tuned for "whiter than white"
(i.e. any level outside the histogram, on the right). This way, they would
perfectly complement the histogram and you won't risk to forget a bright
area whose brightness is far above a nice balance of shadow levels (depicted
by the histogram you are tuning with exposure).
However, I understand that in practice blown highlight could be tuned from
very close to the right side of the histogram scale (I don't know which
level) upward (no limits, of course), which is not bad either.
Dario
----- Original Message -----
From: "Kenneth Waller" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, December 27, 2005 6:39 PM
Subject: Re: Survey: How do you use the Histogram/Blinkies?
I'm not too sure that you can tell if you have blown highlights from just
the histogram.
Which raises an interesting question....
@ what level of over exposure are the blinkies turned on?
Kenneth Waller
----- Original Message -----
From: "P. J. Alling" <[EMAIL PROTECTED]>
Subject: Re: Survey: How do you use the Histogram/Blinkies?
I'm not too sure that you can tell if you have blown highlights from just
the histogram. Since I've been using the Ds, (it has some nice points
but I do miss the D), I've had the blinkies turned on with the histogram.
I've gotten blinkies with what looks like a perfectly acceptable
histogram.
