histograms explained

Photo HistogramsAnd Cool Things You can do with them

Cristiano Betta - CristianoBetta.com

Photo Histograms

Histograms?

• Histograms?• How do they work?• How can I use them?• Cool Things!

Histograms?

In-camera Histogram

In-camera Histogram

Adobe Lightroom Histogram

What’s the difference between

This photo

.This photo.

..This photo..

...This photo...

.... and this photo?

Looking at the histograms...

How do they work?

Meet Lenna

Meet Lenna

Meet Lenna

Meet Lenna

Meet Lenna

Meet Lenna

Meet Lenna

Meet Lenna

Dark Pixels Light Pixels

no pixels

Many Pixels

Dark Pixels Light Pixels

no pixels

Many Pixels

Dark Pixels Light Pixels

no pixels

Many Pixels

How Can I use them?

Exposure

Highly Underxposed

Slightly Underxposed

Properly Exposed

Slightly Overexposed

Highly Overexposed

Dark Pixels Light Pixels

no pixels

Many Pixels

Dark Pixels Light Pixels

no pixels

Many Pixels

Contrast

Dark Pixels Light Pixels

no pixels

Many Pixels

Dark Pixels Light Pixels

no pixels

Many Pixels

editing

Cool Things!

Segmentation

Histograms as an Image

Histograms Anywhere

Bookmarklet + Webservice

http://histogram.cristianobetta.com

Last Notes

There is no perfect Histogram

Histograms Just “are”

• Ken Rockwell’s Guide to Histograms - http://www.kenrockwell.com/tech/histograms.htm

• Timothy Edberg on Histograms - http://www.edbergphoto.com/pages/Tip-DigitalHistograms.html

• Histograms as an Image - http://www.ironicsans.com/2007/09/

Sources