[Klaus]

[quote name='Rainer' date='16 June 2010 - 07:10 PM' timestamp='1276708219' post='565']

I do more or less always use infinity ... if there is something in the frame that needs

infinity-focussing ... if that is not the case, I focus on the item that is furthest away.



For a good description, search the web for Harold Merklinger and depth of field ...

or have a look here ...

[url="http://jimdoty.com/Tips/Depth_of_Field/More_DOF/dof_merklinger/dof_merklinger.html"]http://jimdoty.com/T...merklinger.html[/url]

and here ...

[url="http://www.trenholm.org/hmmerk/DOFR.html"]http://www.trenholm....mmerk/DOFR.html[/url]



for me, this approach works visibly better than the hyperfocal distance approach

that you two seem to use.



just my 2cts...Rainer

[/quote]



I don't really use the HFD - typically I end up somewhere between infinity and the HFD.

The circle of confusion is usually a bit optimistic in the usual HFD calculators out there (IMHO).