Histogram tips

[matt]

Guys. Quick question. I've never come close to fully understanding exactly what one should try and achieve when using the histogram in Registax??? By this I mean, once you get to wavelets and you've performed your RGB shift estimate and then open your histogram tab. You get your red, green and blue lines which look like little mountain peaks. Well, what's the idea here? To move them so they all fall within the same close vertical line? What if one of them peaks much higher than the others?? I also don't understand the concept of "clipping" as described with a black and white histo????

[matt]

Anyone?

[Dennis]

Hi Matt

Have a look here for a nice intro to histograms - a picture is worth 1000 words in this case.

http://www.dpreview.com/learn/?/key=histogram

Cheers

Dennis

[matt]

Cheers, Dennis. As always ... a gentleman and a scholar;)

I'm also really keen to learn more about the histogram (RGB) which opens on the histogram tab in wavelets in Registax?????

What's the overall aim there??? What should I be striving for in making those adjustments.... stretching ... etc etc???

Sorry to press the point. ANd double apologies to you Dennis if that link gives the answer. Just haven't read it all the way thru. Have been at work all arvo and am just about to head home:thumbsup:

[Vermin]

Another good resource: http://www.earthboundlight.com/phototips/histogram.html

There's quite a bit on how to use curves effectively in Photoshop and a whole heap of photography related tips in the archives too.