[Guest]

[quote name='nandadevieast' timestamp='1349771846' post='20545']

sorry for the confusion...i have no idea about the macro lenses

thinking of using one of these

[/quote]





Why don't you use this link I gave, you can put in different distances, different apertures, and you see what happens to the face:

http://kingfisher.in.coocan.jp/boke2/bokekeisan2e.html



Also,

http://www.dofmaster.com/ is not just a fixed table, you can put in any distance, focal length etc.

http://www.dofmaster.com/dofjs.html



Finally, minimal focal lengths of lenses are found on the manufactorers web sites.

But anyway, to frame a face completely, it is at least 10x bigger than the sensor, that is a magnification for which you don't really need macro.