Hello im newbie here i brought my Nikon D5100 few months ago im so happy with it but today i got a new problem my d5100 can't focus an object like used to like this picture
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and this
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these object was shot with various settings and modes auto-focus to manual and i shot these image just about 2-3 inches away from my lens ..so anybody knows whats going on here? it could be from settings cause i set my every settings to default
EDIT: i almost forgot my lens its 18-55vr lens