Archived posting to the Leica Users Group, 2014/02/22

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Subject: [Leica] OT - Sony Alpha 7R
From: images at comporium.net (Tina Manley)
Date: Sat, 22 Feb 2014 13:36:11 -0500
References: <10247008.1393087963431.JavaMail.root@mswamui-backed.atl.sa.earthlink.net> <08960A34-96FC-4C1D-9279-C67FC03932E8@frozenlight.eu>

You know exactly what it would be!

KISS!!

Tina


On Sat, Feb 22, 2014 at 12:57 PM, Nathan Wajsman <photo at 
frozenlight.eu>wrote:

> I'd love to hear Ted's perspective on this thread ;-)
>
> Nathan Wajsman
> Alicante, Spain
> http://www.frozenlight.eu
> http://www.greatpix.eu
> PICTURE OF THE WEEK: http://www.fotocycle.dk/paws
> Blog: http://nathansmusings.wordpress.com/
>
> YNWA
>
>
>
>
>
>
>
>
>
> On Feb 22, 2014, at 5:52 PM, Doug Herr wrote:
>
> > Frank Filippone wrote:
> >
> >>>>
> > ( why there really is a
> > fine focus adjust feature in higher end cameras.. camera AF is adjusted
> by
> > the user to nail down the precise focus location.
> > <<<
> >
> > AF micro-adjust is on DSLR cameras so that the user can compensate for
> the differences between the image plane at the AF sensor and at the image
> sensor, and for differences in the phase-detect system's assumption of the
> lens' focal length and the actual focal length (read: manufacturing
> tolerances).  A camera using the image sensor as the AF sensor eliminates
> the image plane discrepancy and a phase-detect + contrast-detect system
> such as used by the A7 eliminates the phase-detect system's focal length
> assumption discrepancy.  The A7 (and A6000) should have no need for AF
> micro-adjustment, likewise the A7r which is contrast-detect only.
> >
> >
> > Doug Herr
> > Birdman of Sacramento
> > http://www.wildlightphoto.com
> >
> >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
>


-- 
Tina Manley
http:// <http://tina-manley.artistwebsites.com/>www.tinamanley.com


Replies: Reply from rgacpa at gmail.com (Bob Adler) ([Leica] OT - Sony Alpha 7R)
Reply from ric at cartersxrd.net (RicCarter) ([Leica] OT - Sony Alpha 7R)
In reply to: Message from wildlightphoto at earthlink.net (Doug Herr) ([Leica] OT - Sony Alpha 7R)
Message from photo at frozenlight.eu (Nathan Wajsman) ([Leica] OT - Sony Alpha 7R)