S sglion New Member Dec 11, 2009 47 0 0 Sep 23, 2010 #1 Hi, Is it possible to know/calculate what will be in focus given the f stops Like if I set f 3.5, what distance/depth will be in focus? If its a zoom lens, how does it affect? Thanks
Hi, Is it possible to know/calculate what will be in focus given the f stops Like if I set f 3.5, what distance/depth will be in focus? If its a zoom lens, how does it affect? Thanks
T turtl3fly Member Sep 11, 2009 57 0 6 Sep 23, 2010 #2 here is the calculation webby: http://www.dofmaster.com/dofjs.html
S sglion New Member Dec 11, 2009 47 0 0 Sep 23, 2010 #3 turtl3fly, Thanks. Exactly what I was looking for.
ed9119 Moderator Staff member Mar 11, 2002 11,014 49 48 62 Singapore www.walkeast.com Sep 24, 2010 #4 sglion said: Like if I set f 3.5, what distance/depth will be in focus? Thanks Click to expand... DO NOT forget distance to subject in focus .... that is part of equation in determining DoF
sglion said: Like if I set f 3.5, what distance/depth will be in focus? Thanks Click to expand... DO NOT forget distance to subject in focus .... that is part of equation in determining DoF
Octarine Moderator Staff member Jan 3, 2008 12,991 119 63 Pasir Ris Sep 24, 2010 #5 sglion said: If its a zoom lens, how does it affect? Click to expand... Then the calculated depth of field is only valid for one particular focal length. The moment you change the focal length (vulgo: zoom in / zoom out) the value for DOF changes.
sglion said: If its a zoom lens, how does it affect? Click to expand... Then the calculated depth of field is only valid for one particular focal length. The moment you change the focal length (vulgo: zoom in / zoom out) the value for DOF changes.