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Next PZ lens test report: Nikkor AF-S 85mm f/1.4 G (FX)
#11
[quote name='mst' timestamp='1304371430' post='8007']

Quite impressive:



http://www.opticallimits.com/nikon_ff/60...rafs8514ff



-- Markus

[/quote]



Thanks for your test, Markus



What does the focusshift mean in practical use. Is manual focus needed with lower apertures or is there any correction done by the camera itself? What are your practical experiences?



Georg
#12
Thanks for the review.

I'm very impressed by Nikon. They're making so many new prime lenses recenly.

But they still lack an affordable high pixel-count FF camera like the 5d2 or a900.
#13
[quote name='mst' timestamp='1304371430' post='8007']

Quite impressive:



http://www.opticallimits.com/nikon_ff/60...rafs8514ff



-- Markus

[/quote]

Markus, thanks for the great review!



Sorry to ask for this, but some times I am confused by "focus shift". Is it possible to add the definition of it in PZ glossary page where you explain the basic terms about photography? Thanks in advance.

http://forum.photozone.de/public/style_e...lleyes.gif
#14
Focus shift; basically closing the aperture changes the point of focus.



I've never bothered to look up why this is the case; though I'm sure someone with a bit of physics in their background could explain it.



What I do not understand is why cameras are not programmed to compensate.



[quote name='borisbg' timestamp='1304438239' post='8030']

Markus, thanks for the great review!



Sorry to ask for this, but some times I am confused by "focus shift". Is it possible to add the definition of it in PZ glossary page where you explain the basic terms about photography? Thanks in advance.

http://forum.photozone.de/public/style_e...lleyes.gif

[/quote]
#15
One link: Focus Shift



Slightly off topic: I now find myself jumping around the digitalrev videos... quite entertaining although I'm not going to take their results too seriously.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.
#16
[quote name='popo' timestamp='1304443301' post='8032']

One link: Focus Shift



Slightly off topic: I now find myself jumping around the digitalrev videos... quite entertaining although I'm not going to take their results too seriously.

[/quote]



Popo, thanks a lot. The link was very helpful for me.
#17
[quote name='borisbg' timestamp='1304438239' post='8030']

Markus, thanks for the great review!



Sorry to ask for this, but some times I am confused by "focus shift". Is it possible to add the definition of it in PZ glossary page where you explain the basic terms about photography? Thanks in advance.

http://forum.photozone.de/public/style_e...lleyes.gif

[/quote]



Where is focus shift mentioned in this review?
#18
[quote name='borisbg' timestamp='1304438239' post='8030']

Markus, thanks for the great review!



Sorry to ask for this, but some times I am confused by "focus shift". Is it possible to add the definition of it in PZ glossary page where you explain the basic terms about photography? Thanks in advance.

[url="http://forum.photozone.de/public/style_emoticons/default/rolleyes.gif"]http://forum.photozo...lt/rolleyes.gif[/url]

[/quote]



Also check the LoCA test results to observe this... The focus shifts with greater f-stops (upwards in 2D image, further in 3D space).
#19
[quote name='Yakim' timestamp='1304494884' post='8046']

Where is focus shift mentioned in this review?

[/quote]



MTF and Bokeh fringing sections.



-- Markus
Editor
opticallimits.com

#20
[quote name='mst' timestamp='1304497105' post='8051']

MTF and Bokeh fringing sections.



-- Markus

[/quote]



Thanks for the reference. Well, if it's only "a slight amount" I think I could live with that. After all, nothing in life is perfect. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='Smile' />
  


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