Moving slowly from analogue photography to digital reflex passing through pocketcam art , but above all from handycam to video with DSLR reflex, I had to concentrate on how to increase depth of field in shots.
As it is very easy to follow -for example - a flight with my handycam with autofocus, with Rebel T3i I have to think to:
- increase depth of field ,
- set an ideal hyperfocal distance .
There are two very useful tools online, two dynamic charts:
1. http://www.dofmaster.com/doftable.html for calculating depth of field (available as an application for iPhones and smartphones too) and
2. http://www.dofmaster.com/download_chart.html , a software for pc that helps calculating the hyperfocal distance .
I wrote a short tutorial about what effectively "depth of field" and "hyperfocal distance" are and how to set Canon 600d for the best performance, thanks to the charts above and the right "circle of confusion" value.
I used as a reference a short, clear article by Gary Nugent
http://www.picturecorrect.com/tips/hyperfocal-focusing-photography-tips/ ,
but - above all - the great help of my friend José Alonso Leon - photographer, filmmaker and producer - who is leading me as my trainer in the world of DSLR video.