Part 1 :

Still Life

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17mm

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50mm

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85mm

 

The wider the lens is, the more background we can see. The pencil case seem also farther, then it is.

 

People

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17mm

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50mm

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300mm

Almost the same, but at 300mm the two persons seem to be at the same level, even if the distance between them is the same.

Part 2 :

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85mm

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50mm

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17mm

The background of the image is sharper when the lens is wider, even at the same aperture. Distortion is happening more clearly also when it’s wider.

Part 3 :

17-85mm f/4.5-5.6 Canon

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This lens is the sharpest at f/8 for the same settings

50mm f/1.8 Canon

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This lens is the sharpest at f/8 for the same settings.

70-300mm f/4-5.6 Canon

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This lens is the sharpest at f/16 for the same settings.

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