[MF3D.FORUM:484] Re: Sputnik Strangeness

[Richard Rylander <rlrylander@xxxxxxx>]

Brian -
I have a Sputnik where the middle element of the left hand lens could
"rattle" very slightly until I added a thin [black] paper collar under the
retaining ring.  Perhaps something similar is going on with your spud - the
shutter itself jostles the element creating motion blur in the image.  Try
unscrewing the front element of the lens, and in the process of cleaning the
front surface of the middle element you might be able to tell if it is loose
(mine would rotate if I used a circular motion with the lens tissue).  Lens
elements that are slightly undersized for the cell/retaining ring mounts
might be typical rather than peculiar to the spud I have.
Richard Rylander

Brian Reynolds wrote:

> I wrote:
> > Three of the rolls are fine.  On the fourth roll the right image (as
> > seen when viewing the uncut roll) is sharp, but the left image has
> > significant motion blur.  All the rolls were shot handheld with the
> > bare camera.  I didn't bring a tripod, and I had forgotten the adapter
> > bushing so I couldn't use the flash bracket that I normally hold the
> > camera with.
> >
> > Any ideas as to what's going on?
> >
>
> Well I still have this problem and I can't figure out what's wrong.  I
> brought the Sputnik with me on an outing to the Bronx Zoo and shot a
> few rolls of EPP.  It had been suggested at the last Third Friday
> Stereo Dinner that I might be rotating the camera around one of the
> lenses while pressing the shutter release.  This time I tried keeping
> the camera pressed against whatever railing was available near
> whatever I was photographing.  I still pressed the shutter release by
> hand.  This didn't help.  I even shot the last two pairs on the last
> roll on a tripod with a cable release and one frame is still blurred.
>
> I'm pretty sure this is motion blur, not mismatched focus or subject
> motion.  The last two pairs on the last roll were of buildings down
> near Wall Street.  They weren't moving much when I was there.  :)
>
> --
> Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
> reynolds@xxxxxxxxx              | "Oooh!"
> http://www.panix.com/~reynolds  |    -- Dexter and Dee Dee
> NAR# 54438                      |       "Dexter's Laboratory"