what do front and back foucusing problem means?
Front focusing, the camera and lens focuses in front of the spot where you wish to focus on.
Back focusing, the camera and lens focuses at the back of the spot where you wish to focus on.
9
8
7
6
5
4
3
2
1
let's use this scale as an example... if you focused on number 5 with a large aperture (to ensure a small DOF) and when you take the picture, the number 6 onwards is sharp instead of 5, this is called back-focusing.
If you take the photo with 5 as focal point, and the sharp area is 4 or smaller, then it's called front-focusing...
Note that #9 is farther to you than #1.
If 1 and 9 are the same distance from you, then all the numbers will be more or less focused. Unless the lens is soft at the edges. Only when the different numbers are at different distances, with 1 nearest to you, and 9 furthest, will the FF or BF be of any issue.
the point being?? :dunno:
If 1 and 9 are the same distance from you, then all the numbers will be more or less focused. Unless the lens is soft at the edges. Only when the different numbers are at different distances, with 1 nearest to you, and 9 furthest, will the FF or BF be of any issue.
O, I have to be clearer...I meant if you arrange #1-#9, the #1 is nearer to the cam and #9 is away from the cam....because the way you present #1-#9 is in vertical (as view on monitor)manner, so all on the same focus plane on the monitor.....just worried that TS may be confused....nothing much actually. Sorry if I caused confusion instead of clarification.:embrass: