1.     When is a 50 mm objective lens preferable to a smaller…

1.     When is a 50 mm objective lens preferable to a smaller lens? When is it not? Why?

2.     The size of a scope tube has more to do with adjustability than light-allowance. Explain.

3.     Explain ‘parallax’ as though you were introducing the term to someone who has no previous understanding of the concept.

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