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Subject: shifting f-stops on sputick
Date: 2008-02-13 02:42:17
From: Mark
Hello

Anyone else have this problem when shooting of accidently nudging the
lever for f-stops?

I unloaded the last roll of film from last night and noticed it had
opened a stop and and a half.

When shooting with a flash I need it left on whatever I set it on.
Seems to be too easy to change the f-stop and shooting in darkend
rooms you don't notice these things.

Kludges people do?

M
Subject: Re: shifting f-stops on sputick
Date: 2008-02-13 12:12:25
From: John Thurston
Mark wrote:
> Anyone else have this problem when shooting of accidently
> nudging the lever for f-stops?

I did until I gave up trying to directly hand-hold the
camera. I found I was trying to support the camera body from
below and my hand was bumping the aperture-lever.

I got around the problem by using using a cheap
flash-bracket. With that, my left hand could support the
weight of the camera from the side and my right hand could
work the shutter. Neither hand was near the aperture control.

This, of course, won't help if your aperture controls are
loose enough to change their adjustment "on their own" or
with small amounts of camera vibration. If this is the case,
I'd look at damping the movement by wedging a bit of
open-cell foam behind the aperture connecting arm. I could
still move it, but it might keep it in place as I moved the
camera around.

--
John Thurston
Juneau Alaska
http://stereo.thurstons.us
Subject: Re: shifting f-stops on sputick
Date: 2008-02-15 05:36:28
From: Mark
> I did until I gave up trying to directly hand-hold the
> camera. I found I was trying to support the camera body from
> below and my hand was bumping the aperture-lever.

i was shooting with a Metz 45CT4 so thats a handle grip built in.


> I got around the problem by using using a cheap
> flash-bracket. With that, my left hand could support the
> weight of the camera from the side and my right hand could
> work the shutter. Neither hand was near the aperture control.
>
> This, of course, won't help if your aperture controls are
> loose enough to change their adjustment "on their own" or
> with small amounts of camera vibration. If this is the case,
> I'd look at damping the movement by wedging a bit of
> open-cell foam behind the aperture connecting arm. I could
> still move it, but it might keep it in place as I moved the
> camera around.

think I'll start using some tape to keep in in place.

Checking through the mounted images yesterday I've come to the
conclussion that its not worth using for shots of 2-3 people or less
unless there's loads of complex detail.

Sure there resolution is stunning, but the focal dop is two shallow
and one can't focus too close up with it.

M
Subject: Sputnik depth of field [was: shifting f-stops on sputick]
Date: 2008-02-15 11:22:38
From: John Thurston
Mark wrote:

> Sure there resolution is stunning, but the focal dop is two shallow
> and one can't focus too close up with it.

Isn't your depth of field a function of the flash power you
have to work with?

--
John Thurston
Juneau Alaska
http://stereo.thurstons.us