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Forums > Back > next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye
#14
[quote name='Klaus' date='16 June 2010 - 12:17 PM' timestamp='1276683441' post='558']

I do never set infinity focus on an ultra-wide. That's a waste of DOF.

[/quote]



[quote name='wim' date='16 June 2010 - 12:25 PM' timestamp='1276683917' post='560']

I agree 100%. DoF isn't infinite, after all, not even with UWAs or fisheye lenses ...

[/quote]



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
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Messages In This Thread
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by DonAndre - 06-15-2010, 07:23 PM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Guest - 06-16-2010, 04:08 AM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Guest - 06-16-2010, 06:50 AM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Guest - 06-16-2010, 07:31 AM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Rainer - 06-16-2010, 05:10 PM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Guest - 06-16-2010, 06:49 PM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by Guest - 06-16-2010, 10:41 PM
next PZ Lens Test Report: Samyang 8mm f/3.5 Fisheye - by johnwhit - 06-29-2010, 02:22 PM

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