Focusing plane explained...
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CT
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I take it you mean depth of field? The focal plane is where the sensor sits, and it's position is usually marked on the camera top plate with a white circle symbol with a line through it.
A couple of good ntroductions here...
http://www.ephotozine.com/article/depth-of-field-explained-4631
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm
A couple of good ntroductions here...
http://www.ephotozine.com/article/depth-of-field-explained-4631
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm
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Are yes sorry I did mean DOF...
This is what I need a better understanding of...
Row of chairs along a wall.
In chair one we have granny
nobody in chair two
Uncle fred in chair three
I need granny and uncle fred in focus but the the background to blur quite quickly as it not very pretty..
Now I think I can focus on Uncle fred and then take a step backward and that should get granny as well...
I have a basic understanding, but I need to understand more...
How the focal lenght effect the above
How the distance from subject effect the above
Ie 50mm quite close compare to 200mm moved way back..
Not very technical...
Decent books or web sites?
Ian....
This is what I need a better understanding of...
Row of chairs along a wall.
In chair one we have granny
nobody in chair two
Uncle fred in chair three
I need granny and uncle fred in focus but the the background to blur quite quickly as it not very pretty..
Now I think I can focus on Uncle fred and then take a step backward and that should get granny as well...
I have a basic understanding, but I need to understand more...
How the focal lenght effect the above
How the distance from subject effect the above
Ie 50mm quite close compare to 200mm moved way back..
Not very technical...
Decent books or web sites?
Ian....
CT
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Have a read of the two links I posted above Ian and see if that helps. Sing out if you need any more help, but it may well not be possible to get both people in focus and the background OOF anyway - partciulary if you're working in a location with limited room.
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You could punch some figures into this site http://www.dofmaster.com/dofjs.html
Its maybe not a teaching tool as such, but such at least estimate focal lengths and distances to subject - then try and get as much distance between your background and subject.
Its maybe not a teaching tool as such, but such at least estimate focal lengths and distances to subject - then try and get as much distance between your background and subject.