# Thread: principle of the third rule

1. ## Re: principle of the third rule

Originally Posted by catchlights
the rule of third is recommend you to place the interest of your subject at the intersection points, not asking you to set your focusing point at intersection points.

btw focus and recompose will not always work, that is why modern cameras has so many focusing points.
hmmm catchlights what do you mean by focus and recompose do not always work? like when using a tripod?

2. ## Re: principle of the third rule

Originally Posted by deathrequiem
hmmm catchlights what do you mean by focus and recompose do not always work? like when using a tripod?
No, when your depth of field is too shallow and you don't know how to move your camera in parallel to the desired focal plane.

3. ## Re: principle of the third rule

Originally Posted by Rashkae
No, when your depth of field is too shallow and you don't know how to move your camera in parallel to the desired focal plane.
thanks for the reply bro. can enlighten me further on this? i usually use the centre af point to focus then recompose. maybe i havent encounter extreme shallow dof yet lol
so what do you mean by this? is it like when you are focusing on a subject which extends diagonally away from your dof?

4. ## Re: principle of the third rule

Originally Posted by deathrequiem
thanks for the reply bro. can enlighten me further on this? i usually use the centre af point to focus then recompose. maybe i havent encounter extreme shallow dof yet lol
so what do you mean by this? is it like when you are focusing on a subject which extends diagonally away from your dof?
not necessarily diagonal. More like, the plane of focus is like a flat plane perpendicular to you. If you focus, then rotate, you are shifting the plane. You need to move in parallel to keep the focal plane where you want it.

5. ## Re: principle of the third rule

Originally Posted by Rashkae
not necessarily diagonal. More like, the plane of focus is like a flat plane perpendicular to you. If you focus, then rotate, you are shifting the plane. You need to move in parallel to keep the focal plane where you want it.
thanks bro i understand liao. will keep that in mind next time if i shoot shallow dof

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