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Photography Q&A
Does standing further back & zooming in increase the acceptable focus zone?
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<blockquote data-quote="paul_b" data-source="post: 550529" data-attributes="member: 15676"><p>- Suppose you have your subject at point A, and you and camera are at point B</p><p>- Lets invent 2 situations, each with an imaginary distance between points A & B:</p><p>- Situation 1: It has 10 meters between point A & B and NO camera zoom</p><p>- Situation 2: It has 20 meters between point A & B with the camera zoomed in to get a same composition as situation 1</p><p>- In both situations the photographer has pre manually focused on point A</p><p>- Now lets say in both situations a subject runs through point A and then a further 1 meter towards point B causing a loss of focusing accuracy.</p><p>- In theory: in situation 1 the focusing point is then 10% out, ie 1 meter error from a distance of 10 meters</p><p>- In situation 2 the focusing point is only 5% out, ie 1 meter error from a distance of 20 meters.</p><p></p><p>Therefore I'm imagining the focusing area would be less critical if you stood further back and zoomed in more.</p><p></p><p>Does that makes any sense? Would I be right in my assumption?</p></blockquote><p></p>
[QUOTE="paul_b, post: 550529, member: 15676"] - Suppose you have your subject at point A, and you and camera are at point B - Lets invent 2 situations, each with an imaginary distance between points A & B: - Situation 1: It has 10 meters between point A & B and NO camera zoom - Situation 2: It has 20 meters between point A & B with the camera zoomed in to get a same composition as situation 1 - In both situations the photographer has pre manually focused on point A - Now lets say in both situations a subject runs through point A and then a further 1 meter towards point B causing a loss of focusing accuracy. - In theory: in situation 1 the focusing point is then 10% out, ie 1 meter error from a distance of 10 meters - In situation 2 the focusing point is only 5% out, ie 1 meter error from a distance of 20 meters. Therefore I'm imagining the focusing area would be less critical if you stood further back and zoomed in more. Does that makes any sense? Would I be right in my assumption? [/QUOTE]
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Photography Q&A
Does standing further back & zooming in increase the acceptable focus zone?
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