query: How does aperture affect focus area?
positive_passages.docid: 9033
positive_passages.text: What is aperture, and how does it affect my photographs?
negative_passages.docid: 46343
negative_passages.text: When changing between manual and auto focus, should I change the setting on both the body and the lens?
negative_passages.docid: 74363
negative_passages.text: Why is the bokeh shaped like the aperture?
negative_passages.docid: 101960
negative_passages.text: Why are crop lenses indicated with focal lengths they don't have?
negative_passages.docid: 105343
negative_passages.text: Interference at the focus of a convex lens or a concave mirror
negative_passages.docid: 71946
negative_passages.text: How to get tack sharp portraits with shallow DOF when lacking an AF point where I want to focus?
negative_passages.docid: 103113
negative_passages.text: Why do zoom lenses and compact cameras have varied maximum aperture across the zoom range?
negative_passages.docid: 80219
negative_passages.text: What is the relationship between field of view and focal length for fisheye?
negative_passages.docid: 35335
negative_passages.text: What is the relationship between focal length and shutter speed?
negative_passages.docid: 117216
negative_passages.text: Difference between focusin/focusout and focus/blur, with example
negative_passages.docid: 150402
negative_passages.text: Is it normal for focal length to change while focusing?
negative_passages.docid: 69119
negative_passages.text: Is the size of the entrance pupil the same as the size of the effective aperture?
negative_passages.docid: 98701
negative_passages.text: If a lens focuses all incoming light to a point, how do we get 2D images?
negative_passages.docid: 130570
negative_passages.text: Why can't my SLR autofocus on certain parts of a scene?
negative_passages.docid: 91202
negative_passages.text: Why is the aperture ring removed from new Nikon lenses?
negative_passages.docid: 24842
negative_passages.text: Does using an extender actually change the aperture of the lens?
negative_passages.docid: 158181
negative_passages.text: How does the lens diameter influence photo quality?