Reply to thread

Message

<blockquote data-quote="WayneF" data-source="post: 297115" data-attributes="member: 12496">There is a big trick.&nbsp; That trick is to learn to expect this.&nbsp; It will happen, about every time (bright red in sunlight). &nbsp; It is mostly due to white balance.&nbsp;&nbsp; Daylight and Cloudy WB (high temp numbers) do their job by boosting red and reducing blue.&nbsp; So this happens on bright red subjects. The only answer is to expect it, then handle it.&nbsp; Whereas, Incandescent WB (low temp numbers) do it by boosting blue and reducing red. Slide the temperature slider back and forth, and see the red and blue peaks shift in opposite directions.&nbsp; This is how it works.&nbsp; Understand that.&nbsp; If you do not have a temperature slider, then look the the last picture at page bottom here:&nbsp; <a href="http://www.scantips.com/lights/flashbasics1f.html" target="_blank">White Balance Correction, with or without Raw</a>Any Bright Red subjects in daylight ought to sound the alarm &quot;LOOK AT THE COTTEN PICKING HISTOGRAM&quot;.&nbsp; A few situations automatically make photographers think specific thoughts when they first walk up to a scene (called experience).&nbsp; This is one of those.But do NOT look at the single graph of histogram, it is totally useless for any purpose. &nbsp;Instead look at the three RGB histograms to see the real data. &nbsp; <a href="http://www.scantips.com/lights/histograms.html" target="_blank">Two types of Histograms</a> explains this difference, but the single histogram graph will be totally useless for this or any purpose.&nbsp; The three RGB channel histogram will make it be obvious.It is very easy. You take a picture, and look at the RGB histogram. Then you repeat and simply do what the histogram shows needs to be done, so that you do not clip any channel.&nbsp; Expect bright red in sunlight to be clipped.&nbsp;&nbsp; Yes, reduce exposure, as much as is seen important. You likely already about know in advance the next time this comes up.</blockquote>

[QUOTE="WayneF, post: 297115, member: 12496"] There is a big trick. That trick is to learn to expect this. It will happen, about every time (bright red in sunlight). It is mostly due to white balance. Daylight and Cloudy WB (high temp numbers) do their job by boosting red and reducing blue. So this happens on bright red subjects. The only answer is to expect it, then handle it. Whereas, Incandescent WB (low temp numbers) do it by boosting blue and reducing red. Slide the temperature slider back and forth, and see the red and blue peaks shift in opposite directions. This is how it works. Understand that. If you do not have a temperature slider, then look the the last picture at page bottom here: [URL="http://www.scantips.com/lights/flashbasics1f.html"]White Balance Correction, with or without Raw[/URL] Any Bright Red subjects in daylight ought to sound the alarm "LOOK AT THE COTTEN PICKING HISTOGRAM". A few situations automatically make photographers think specific thoughts when they first walk up to a scene (called experience). This is one of those. But do NOT look at the single graph of histogram, it is totally useless for any purpose. Instead look at the three RGB histograms to see the real data. [URL="http://www.scantips.com/lights/histograms.html"]Two types of Histograms[/URL] explains this difference, but the single histogram graph will be totally useless for this or any purpose. The three RGB channel histogram will make it be obvious. It is very easy. You take a picture, and look at the RGB histogram. Then you repeat and simply do what the histogram shows needs to be done, so that you do not clip any channel. Expect bright red in sunlight to be clipped. Yes, reduce exposure, as much as is seen important. You likely already about know in advance the next time this comes up. [/QUOTE]

Verification