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| 17mm Wide Shot |
I just managed to capture the shots for this exercise before the rain set in! We are examining the difference in view achieved by using different focal lengths.
To change the amount of view we can change the focal length of the lens we are using. This is not the same as moving closer to the subject. The image at the centre of a wide angle view will be the same as the image you see in a telephoto lens if taken from the same place.
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| 105mm Zoom |
The exercise confirms this. I took my widest angle shot with a 17mm Wide angle lens and the most zoomed in with 105mm, both of the same subject. The camera was mounted on a tripod to keep the position constant.
From the widest shot I made a crop of approximately the same dimensions as the zoom shot capturing the same view. As you can see the cropped and zoomed in images appear the same.
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| Cropped 17mm |
Compare this to the previous exercise to see the difference between taking the camera closer to the subject or changing lens to get closer from the same position.