Exercise 9 Scene Dynamic range

In this exercise, I am required to take 5 different scenes , Doing the same as before, in the last exercise. But one picture must have highlights, (high dynamic range ) And the other showing one that is flat. (low dynamic range.)

Any scene will do for the rest.

 Exercise 8
I cant help thinking , that the 400d s Dynamic range is not so good in the lower range to record detail, Where as the 7d tends to burn out high lights, Hens, the reason it has a highlight clipping mode .

Conclusion:

Most certainly, there is more to digital then meets the eye.  So In future I must remember, when setting up the 400d, to open up a stop. bracket , this will be to allow detail in shadow areas,  And stopping down, I found with the 7D

Not all camera are the same.


fist low light

1/80 f5,6 ISO 200 

 second high light
Even ditail in High lit area of intens light get washed out and become hazy.

!/80 F 14.ISo 200 

 The next three are and average of lows and mid rage and a hint of high dynamic range.

1/80 f 5.6 ISO 200 

Some noise , just slight is fund at 1005 magnification in the shadows of this pot and upper left side.  

1/80 f4.5 IS0 200 

1.80 F5.6 ISO 200 

Moving in close and taking an exposure, assures that the range of shadow area retains detail . Providing the highlights do not burn out. Using the TV mode keeping the shutter the same. You can see how much the F stops differs from the above.

Exercise 8, Cameras Dynamic range.

To find a scene , that shows an Area of dark shadow. like a wall or house with a door way sun lit from the side. Showing the white of a sheet of paper, or white wall. to make an exposure and adjustment, to show detail. And the effect of noise.

Even looking for just the dark shadow with cream ir dirty walls or another colour , absence , where there would be darkness, there it light. Even in the day Due to the building, facing away from the sun, interiors are badly lit inside.  Doors either closed. . Or as I was putting white paper up. I could up set locals due to superstition.

This exercise will have to wait , when the time is right.

Day 4 much later. Morning walk , round the village. Yielded nothing. Then I thought about my last assignment. A dark window. the light does not fall on it but the wall next to it.  I went back at 5.30pm To observe the light .

Great !. I stood back taking in the hole image. 400 d camera set as asked .

 1/80 sec F6.3

Here in the above photo, in aperture 3, I zoomed into the dark shadow , opening up the exposure in aperture. I could not see any detail, Slight noise . But lost all high lights on the right. 

1/80 F6.5
Same here.  To expose for the shadow, I had should have use a try pod. .  Setting up in the heat and fast dropping sun , I would have lost any light in doing so.  However . Same result as above. 

 1/80 sec f 20

In this image,  I have filled the frame and exposed from the white paper. As you can see, with an average exposure, the highlights have kept there detail. 

These are the shots and exposures taken for this dynamic range .

I am going to have to do this again on my 7d when I get it back from repair. As its the most used camera. I have , so i can find its dynamic range too. 

In observing this use of digital.  The previous exercise on highlight clipping. 

I now understand why my photography previously has lacked that punch and colour saturation. 

This has shown me how making sure that highlights hold detail, and the shadow areas can be opened up. With balancing the highs and lows . An even controlled balance can be achieved. 

Although the high lights do not show noise. A close watch on nose in the darker areas should be watched, when making adjustment. So as not to destroy or confuse noise with real detail.