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Nikon F90X DoF preview question!

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Daniel A. Nathan

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May 20, 1999, 3:00:00 AM5/20/99
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Hi there,

I'm informed that the Depth of Field preview on the F90X only works in
Aperture priority and manual modes only! Is this true?

Could someone please confirm?

Many thanks!

Regards,
Daniel

Chuck Ross

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May 20, 1999, 3:00:00 AM5/20/99
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In article <Pine.OSF.3.91.990520152014.16679D-100000@godiva>, "Daniel A.
Nathan" <dna...@coventry.ac.uk> wrote:

> Hi there,
>
> I'm informed that the Depth of Field preview on the F90X only works in
> Aperture priority and manual modes only! Is this true?
>
> Could someone please confirm?

This is true. Looking at the manual as we speak.

--
Chuck Ross
http://www.enteract.com/~ckross
Digital Photo Gallery

Ross Bench

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May 20, 1999, 3:00:00 AM5/20/99
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On Thu, 20 May 1999 15:20:37 +0100, "Daniel A. Nathan"
<dna...@coventry.ac.uk> wrote:

>Hi there,
>
>I'm informed that the Depth of Field preview on the F90X only works in
>Aperture priority and manual modes only! Is this true?
>
>Could someone please confirm?

That is correct.

The DOF preview is a manually operated lever that
is only able to show you DOF based on the setting of
the f-stop ring on your lens.

In Shutter Priority and Program modes the f-stop ring
is set to the highest f-number on your lens (f/16, f/22, f/32).

The camera sets the apeture in those modes just prior
to exposure so the DOF preview button is not able to
represent what the correct apeture would be.

If DOF is an issue then you wouldn't want to use Program
mode or Shutter priority anyway...

Program mode = Point and Shoot
Shutter Priority = freeze the action

DILLIGAF56

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May 20, 1999, 3:00:00 AM5/20/99
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the depth of field preview is a mechinal button and will work in any camera
mode. i have the n90s and F5 and the F5 is electronic. i hope this will help.

jeffrey donoghue

dilli...@aol.com

Ross Bench

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May 20, 1999, 3:00:00 AM5/20/99
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On 20 May 1999 22:04:40 GMT, dilli...@aol.com (DILLIGAF56) wrote:

>the depth of field preview is a mechinal button and will work in any camera
>mode. i have the n90s and F5 and the F5 is electronic. i hope this will help.

It's not possible to use DOF preview in S or P modes...

You set your apeture to minimum in these modes and
DOF preview will not work.

Andre

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May 20, 1999, 3:00:00 AM5/20/99
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What is this nonsense ? On the Nikon F90x (N90s) the DOF preview works everytime you
push in the dof button. Period. It is mode independant, and as already stated it is
a mechanical function.

Todd & Sharon Peach

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May 21, 1999, 3:00:00 AM5/21/99
to
Andre wrote:
>
> What is this nonsense ? On the Nikon F90x (N90s) the DOF preview works everytime you
> push in the dof button. Period. It is mode independant, and as already stated it is
> a mechanical function.
>
>
Well, it 'works', in that it does stop the lens down; the problem is
that if you're in S or P mode, the N90s DOF button will stop the lens
down to f/16 (or whatever the min aperture of the lens happens to be)
instead of the f/5.6 that the meter may be indicating.

The F5 and F100 with their "electric DOF" will stop the lens down to the
indicated aperture in any exposure mode. (This assumes that you have an
AF lens that works with these cameras in S and P modes.)

-Todd
--
Todd & Sharon Peach
Seattle, Washington (zone 7)
tpe...@gte.net
http://home1.gte.net/tpeach/NoPlaceLikeHome.htm
Owner, Manual Focus Nikon Mailing List: Nik...@onelist.com

Ross Bench

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May 21, 1999, 3:00:00 AM5/21/99
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On Fri, 21 May 1999 02:58:39 GMT, Todd & Sharon Peach <tpe...@gte.net>
wrote:

>Andre wrote:
>>
>> What is this nonsense ? On the Nikon F90x (N90s) the DOF preview works everytime you
>> push in the dof button. Period. It is mode independant, and as already stated it is
>> a mechanical function.
>>
>>
>Well, it 'works', in that it does stop the lens down; the problem is
>that if you're in S or P mode, the N90s DOF button will stop the lens
>down to f/16 (or whatever the min aperture of the lens happens to be)
>instead of the f/5.6 that the meter may be indicating.

Exactly !!

And If you don't have the lens set to minimum apeture then you get
the old "fEE" in S or P modes.

Naomi and David Duffy

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May 21, 1999, 3:00:00 AM5/21/99
to
You mean there are modes other than aperture priority and manual? :-)
<slight pause whilst I double-check> I'll be damned, you're right!

It is true. Outside of A and M modes the DOF preview shows what it is
like with the lens completely stopped down (f/22, f/32, etc.).

David

"Daniel A. Nathan" wrote:
>
> Hi there,
>
> I'm informed that the Depth of Field preview on the F90X only works in
> Aperture priority and manual modes only! Is this true?
>
> Could someone please confirm?
>

> Many thanks!
>
> Regards,
> Daniel

--
---------8<--------------8<-----------
Naomi and David Duffy
Pictures of my little corner of Japan:
http://www.synapse.ne.jp/~fiddlydi/gallery/

Peter A. Simon

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May 21, 1999, 3:00:00 AM5/21/99
to
On Fri, 21 May 1999, Naomi and David Duffy wrote:

> You mean there are modes other than aperture priority and manual? :-)
> <slight pause whilst I double-check> I'll be damned, you're right!
>
> It is true. Outside of A and M modes the DOF preview shows what it is
> like with the lens completely stopped down (f/22, f/32, etc.).
>
> David

That's kind of useless, isn't it?

Peter


<< Mr S. Hutter >>

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May 22, 1999, 3:00:00 AM5/22/99
to
On Thu, 20 May 1999 20:20:47 -0300, Andre <am1...@videotron.ca> wrote:

>What is this nonsense ? On the Nikon F90x (N90s) the DOF preview works everytime you
>push in the dof button. Period. It is mode independant, and as already stated it is
>a mechanical function.
>
>

>Ross Bench wrote:
>
>> On 20 May 1999 22:04:40 GMT, dilli...@aol.com (DILLIGAF56) wrote:
>>
>> >the depth of field preview is a mechinal button and will work in any camera
>> >mode. i have the n90s and F5 and the F5 is electronic. i hope this will help.
>>
>> It's not possible to use DOF preview in S or P modes...
>>
>> You set your apeture to minimum in these modes and
>> DOF preview will not work.

Any one out there using this body ?
So we can clear this dispute up !

JWMALAHY

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May 23, 1999, 3:00:00 AM5/23/99
to
>Any one out there using this body ?
>So we can clear this dispute up !

The correct answer has been given...the button on the camera works (i.e. it
shows the view of the actual lens aperture) in any mode.
BUT, in S and P modes, the actual aperture dialed in on the lens is the
minimum...typically f22...and NOT necessarily the aperture at which you will
expose the picture. Thus, the information from the button cannot be relied
upon in the S and P modes.

Joel

Joe B.

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May 23, 1999, 3:00:00 AM5/23/99
to

>Any one out there using this body ?
>So we can clear this dispute up !

I'm not using one now, but I used to. The dof preview button will stop
the lens down to whatever aperture is set on the aperture ring. It is
mechanical. It won't stop down to the actual takiing aperture in
program or shutter priority modes because the aperture ring would be
set to the minimum aperture, so the minimum apertureof that lens is
what you get when you press the dof button in these modes, regardless
of the aperture the camea would use for the shot when you take the
picture. Thus it is only going to give an indication of the depth of
field of your taking aperture, ie the aperture that the lens willl be
stopped down to when you fire the shutter, when it is used in aperture
priority or manual modes, where the aperture you set on the lens is
the aperture used for the picture.

Joe B. (remove ".gov" for email)

Todd & Sharon Peach

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May 23, 1999, 3:00:00 AM5/23/99
to
(<< Mr S. Hutter >>) wrote:
>
<<<<<<snip>>>>>>>

>
> Any one out there using this body ?
> So we can clear this dispute up !

I use the N90s and F100 bodies. For DOF, the F100 is very similar to
the F5.

Both N90s and F100 bodies offer M, A, S, and P modes.

N90s has a "mechanical" DOF button. You squeeze it and directly move
the mechanical lever to stop down the lens. If the aperture has been
physically set on the lens aperture ring, the DOF button will work
correctly. If you're in S or P mode, and your lens aperture is set to
min (f/16, 22, or 32, depending on lens), when you push the DOF button,
you'll see the DOF for the min aperture (not the aperture that is
displayed in the viewfinder, unless it happens to be the min).

F100 (and F5) have an "electric" DOF button. You push this button, and
it sounds like the camera fires. What it actually does is actuate the
DOF preview. How it differs from the N90s in S or P modes is that the
DOF function will "fetch" the f-stop value from the meter, and actuate
the aperture to that value. The lens is still physically set to min.

Both of the above dialogs are based on using AF lenses. AIS lenses work
a bit differently. Hope that helps.

David Daiwei Chao

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May 23, 1999, 3:00:00 AM5/23/99
to

In S and P mode, if time is not a critical issue, you can still use
the dof preview. Just note what aperture the camera picks and then
turn the aperture dial to that f-stop and depress the dof button.
Unfortunately, the viewfinder and LCD screen will only display fEE,
so you'll have to physically look at the aperture dial or remember
how many stops the f-value is from minimum. Just remember to turn
the aperture back to minimum or else the shutter won't trip.


> I'm not using one now, but I used to. The dof preview button will stop
> the lens down to whatever aperture is set on the aperture ring. It is
> mechanical. It won't stop down to the actual takiing aperture in
> program or shutter priority modes because the aperture ring would be
> set to the minimum aperture, so the minimum apertureof that lens is
> what you get when you press the dof button in these modes, regardless
> of the aperture the camea would use for the shot when you take the
> picture. Thus it is only going to give an indication of the depth of
> field of your taking aperture, ie the aperture that the lens willl be
> stopped down to when you fire the shutter, when it is used in aperture
> priority or manual modes, where the aperture you set on the lens is
> the aperture used for the picture.

> Joe B. (remove ".gov" for email)

--
=======================================================================
David D. Chao | When you steal from one author,
Department of Mechanical and | it's plagiarism;
Aeronautical Engineering | if you steal from many,
University of California, Davis | it's research.
ddc...@rosarita.engr.ucdavis.edu | -- Wilson Mizner
=======================================================================

Chris Marsh

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May 23, 1999, 3:00:00 AM5/23/99
to
"...enables you to view the depth of field before you take the picture, with
the N90S/F90X's Aperture-Priority auto or Manual exposure mode." - (from the
instruction manual)

You can push the button in any mode, but all you're doing is stopping down
the lens to its minimum aperture which the lens must be set to in order for
those modes to work.

Chris


<< Mr S. Hutter >> < s_hu...@email.com > wrote in message
news:374821f4...@news.dabsol.net...


> On Thu, 20 May 1999 20:20:47 -0300, Andre <am1...@videotron.ca> wrote:
>
> >What is this nonsense ? On the Nikon F90x (N90s) the DOF preview works
everytime you
> >push in the dof button. Period. It is mode independant, and as already
stated it is
> >a mechanical function.
> >
> >
> >Ross Bench wrote:
> >
> >> On 20 May 1999 22:04:40 GMT, dilli...@aol.com (DILLIGAF56) wrote:
> >>
> >> >the depth of field preview is a mechinal button and will work in any
camera
> >> >mode. i have the n90s and F5 and the F5 is electronic. i hope this
will help.
> >>
> >> It's not possible to use DOF preview in S or P modes...
> >>
> >> You set your apeture to minimum in these modes and
> >> DOF preview will not work.
>

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