It may not make sense at the time, by why would someone want to take multiple photos of a subject? Well, besides the simple in case it doesn't turn out problem, the end result will also lead you with multiple photos of course.
But besides the multiple photos, I often find it extremely helpful when you are going through your photos and you think, wow I wish I had a shot of that with me a bit to the left more. Or bit to the right which is one reason I never stop clicking when I am out taking photos.
It's a lot easier to delete excess photos then to retake another one!
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