[Leica] What Is "Focus Peeking"

[don.dory at gmail.com (Don Dory)]

Correct, up to the point that you run out of focusing helical it doesn't 
matter whether it is lens registration or curvature of field focus will be 
accurate if you do yor part.

Another benefit is you are focusinf at working aperture so focus shift as 
you stop down is accounted for.  The EVF will also account for very low 
light conditions as it gains up.

Sent from my Droid Charge on Verizon 4GLTE

------Original Message------
From: Jayanand Govindaraj <jayanand at gmail.com>
To: "Leica Users Group" <lug at leica-users.org>
Date: Wednesday, September 19, 2012 3:59:23 PM GMT+0530
Subject: Re: [Leica] What Is "Focus Peeking"

It seems to be a brilliant feature. Is it then correct to say that with
focus peaking and an EVF, lens-body focusing accuracy problems like front
focusing, etc are irrelevant?
Cheers
Jayanand

On Wed, Sep 19, 2012 at 2:08 PM, Don Dory <don.dory at gmail.com> wrote:

> Robert,
> Focus peaking is from the video realm.  You can choose your color and the
> level of the peaking effect.  To try it out while waiting for Leica pick up
> a Sony Nex 5 or Nex 7.  As others have mentioned you see the effect on the
> whole screen, it accounts for your depth of field so the effect shows you
> what will be in focus as you stop down fairly effectively.
>
> Caveats would be it is a learned tool much like focusing on ground glass;
> if you turn up the peaking level you can get false positives as the peaking
> color bleeds over into areas that are not really in focus.  Also, if your
> lens doesn't have a crisp transition from out of focus to in focus it can
> be difficult to use; a wide angle like the 18mm Zeiss will show everything
> in focus or a 35 Summicron stopped down to F8 at intermediate distances
> will show most everything glowing in red(or yellow or white).
>
> The plus side is that it will put new life in lenses such as the 75
> Summilux as focus peaking takes into account field curvature so you really
> can focus off center quickly and easily.  Also, with the right adapter you
> can now use any lens in your stable or do macro with your M.
>
> If any of you do decide to go and check out the principle with a Sony Nex
> you will need to use its somewhat ill conceived menu.  In the menu go to
> the lower right option and scroll down, way down until you can set several
> things.  1) allow firing without a lens attached 2) allow focus peaking 3)
> choose a color 4) choose a level of focus peaking.  Also enable manual
> focusing.
>
> Thanks for listening and now back to lurking.
>
> Don Dory
>
> On Tue, Sep 18, 2012 at 10:43 PM, Robert Adler <rgacpa at gmail.com> wrote:
>
> > This sounds very much like the Focus Mask available on the PhaseOne IQ
> > digital backs. Either in Live View or after exposure it highlights the in
> > focus areas based on contrast, as Doug describes. In the PhaseOnes you
> can
> > even adjust the level of contrast to use to show the in-focus mask (my
> > guess is not part of the M offering). I would LOVE to have a back like
> > this...
> >
> >  It's a wonderful feature if you think about it. If your lens is finicky
> > about having to be exactly mated to the body (Noctilux/75 'lux), you
> could
> > live with a little back or front focus. If you could see what was in
> focus
> > with these red lines (let's say the pupil of an eye against the white of
> > the eye), just moving your head until the area you want in focus lights
> up
> > would be terrific. Heck, even if your lens was perfectly mated, you'd get
> > more in focus hits than before at wide open...
> >
> > If that is now available via live view on the EVF, it may well be worth
> the
> > price of admission...
> > IMO.
> > We shall see
> >
> > Bob Adler
> > Redwood City, CA
> > http://www.rgaphoto.com
> >
> >
> > ------------------------------
> > *From:* Robert Baron <robertbaron1 at gmail.com>
> > *To:* Leica Users Group <lug at leica-users.org>
> > *Sent:* Tue, September 18, 2012 2:02:41 PM
> > *Subject:* Re: [Leica] What Is 'Focus Peaking'?
> >
> > I ask because there have been references to the new 'M' camera using
> 'focus
> > peaking' which is something new to me.
> >
> > As are more and more things these days...
> >
> > Thanks,
> >
> > --Bob
> >
> > ==On Tue, Sep 18, 2012 at 3:45 PM, leo wesson <leowesson at gmail.com>
> wrote:
> >
> > > On video?  On my camera, I get a red line when something is in focus.
> > >  Apparently some still cameras use it.
> > >
> > > http://www.luminous-landscape.com/forum/index.php?topic=56246.0
> > >
> > > Leo Wesson
> > > Photographer/Videographer
> > > 817.733.9157
> > > www.leowesson.com
> > >
> > >
> > > On Tue, Sep 18, 2012 at 3:37 PM, Robert Baron <robertbaron1 at 
> > > gmail.com
> > > >wrote:
> > >
> > > > An enquiring mind wants to know.
> > > >
> > >
> > >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
> > --
> > Bob Adler
> > http://www.rgaphoto.com
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
>
>
>
> --
> Don
> don.dory at gmail.com
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>

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