Newbie question: Difference between focal lenghts?

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Icemail New Member • Posts: 3
Newbie question: Difference between focal lenghts?

Hey Folks

I have tried googling this, but there are no very good answers, that i can understand simply.

My question is, does focal lenght matter? What are the differences between those focal lenghts. I mean I get the idea that the lower focal lenght means wider and the higher the more  croped/zoomed in you are in the object.

But I mean can't you just simply just take couple of steps back, and get the same image of the object, with a 25mm like you do with 50mm and with and 85mm etc.

Why does the focal lenght matter if you can just take a couple of steps back, wont you get the same image?

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