Exercise : Histograms

HISTOGRAMS


The purpose of this exercise is to familiarise yourself with histograms by relating each one to the image you have just taken, helping you recognise the basic characteristics of an image.

You see the histogram first on the camera and then in Photoshop when processing the image.

Here are my selection of pictures.  I will scan in my hand sketches at the end.

LOW CONTRAST

IMG 6482  -  Average

IMG 6483 - One Stop Darker

IMG 6481 - One Stop Lighter

Sketch of Histogram

I have shown the histogram of both the Lightroom histogram, and the one on the camera.  There are slight differences.
In the first image there are a few dark clippings to the left, which don't show on the camera histogram.
In the second image there is quite a difference between the two with the histogram staying more to the left on the camera.
In the third image there is a slight difference.. the camera histogram is a little flatter.



AVERAGE CONTRAST 


IMG 6498 - Average

IMG 6499 - One Stop Darker

IMG 6500 - One Stop Lighter

Sketch of Histogram

With this picture there are a few clippings, and the camera histogram is quite flat.
The second picture, there is a slightly smaller incline.
and the third, their are bright clips to the right and is similar.








HIGH CONTRAST




IMG 6496   -   Average

IMG 6497  -  One Stop Darker

IMG 6495  -  One Stop Lighter

Sketch of histogram

The first picture the histogram on the camera has a slightly more prominent peak and slightly to the left.
The second picture, both are about the same.
And the third picture, the peak is slightly more central.