27 September 2010

Exercise 3

I found this exercise quite difficult to achieve. I firstly struggled with photographs with the correct levels of contrast. Secondly working out how best to display the histogram and the highlight shadows and clippings for each picture was tricky. I eventually went for screen shots from PE 8 RAW display.


The first set of 3 are low contrast are the 3 different exposures:


This is the highest exposed of the set of 3 photographs. From the histogram you can see that this has a low range of tones with the data mostly in the middle. Even so there is still a small amount of highlight clipping on the boy's bat where the picture is at it's brightest.



This is the middle exposure of the picture the histogram has all the data in the middle of the graph and there is no clipping of either shadows or highlights.



This is the lowest exposure shot and even as the picture is nearly dark the lack of tonal range means that there is no shadow clipping.


This set of three photographs has a moderate level of contrast:



From the histogram you can see that this is a fairly moderate spread of contrast although there are several spots of high contrast that are illustrated as clipped. There is nothing beyond the shadow clipping range.


In the low exposure version of the shot you can see that there is no a large range of contrast although the brightest parts of the umbrellas are showing small amounts of clipping.


In this highest exposed shot you can see that there is a wider range of contrasts and that the highlights are slightly clipped.

The final set of three photos fir this exercise have a full and wide range of contrasts:

THis photo has contrast off both edges of the camera capabilities. Both in the shadows and the highlights. Even in this medium exposure there is some shadow clipping and a little highlight clipping in the boy's shirt.

This higher exposure shot has plenty of clipping in the highlights but also has some shadow clipping still. The histogram has a wide range in all areas with several peaks and troughs.

The lower exposure has moved the highlight clipping away but has exaggerated the shadow clipping. The histogram shows that a considrable amount of the contrast range is now down at the darker end of the scale.

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