Dumb question.. lens for D800

Started May 16, 2012 | Discussions thread
jaysonmc Senior Member • Posts: 1,148
Perspective is the the answer.

The best example is take a picture where you have the moon in the frame and a person from head to toe with the 28mm.

Now if you take the same picture with an 85mm (person is visible from head to toe), the moon will be much bigger.

If you take the 28mm and crop it so the Moon is the same size, what happens is the person becomes enormous (you no longer able to see the from head to toe).

Focal length is about subject relationships to each other.

There are other differences too (depth of field), but this is the main point.

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