D.o.f. – Tea cup experiment…

by am109145

Once revisiting depth of field though having a gander into the book ‘Composition- photo workshop’ I wanted to test what I have learnt by putting it into practice during the daylight. This experiment tests the concept of increasing and decreasing the F stop and altering the ISO to achieve different depths of field within the set of images. Along the way I have found hiccups, obstacles and problems that I have tried to overcome which may have resulted in some images being over or under exposed.

Setting = living room indoor daylight 

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1/60, f4.5, ISO 1600

Trying to create a shallow exposure through using a low f stop, as we can see from the diagram I have drawn below the image’s ‘plane of critical focus’ is the second tea cup as shown in red in the diagram, thus making the depth of field.

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1/60, f4.5, ISO 1600

Although not significantly different this image shows a slightly wider depth of field than the last, if you enlarge the image we can see that the ‘plane of critical focus’ spreads from the second tea cup to the third thus making the DOF a little wider than the previous image.

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1/60 f4.5, ISO 1600

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1/60, f4.5, ISO 1600

As you can see within this image the depth of field is fairly wide in its stance, the background is also in focus without losing focus on the tea cups.

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1/60, f8, ISO 1600

In this image I have applied the concept of increasing the fstop so that there is a bigger aperture thus a wider depth of field. As we can see from the image the result of doing this has left me with a darker image. To correct this I could alter the ISO as if we look closely we can see that everything we want is in focus.

Result of increasing the ISO to 3200:

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1/60, f8, ISO 3200

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CHANGING THE COMPOSITION OF THE TEA CUPS…

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As we can see from this diagram the depth of field is fairly shallow. The first two tea cups are in focus. I feel that this image did not have the correct exposure compensation either.

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STILL TO OVEREXPOSED.

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1/60, f10, 3200 – DOF = WIDE

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1/60, F8 , ISO 3200

OTHER IMAGES TAKEN THAT EXPERIMENT WITH DOF:

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