Re: Horizon 202 camera

[Willem-Jan Markerink <w.j.markerink@xxxxx>]

On 22 Aug 99 at 21:03, Marco Pauck wrote:

> Hi WJ,
> 
> Willem-Jan Markerink wrote:
> > 
> > On 21 Aug 99 at 2:41, jbader@xxxxxxxxxxx wrote:
> [...]
> > > the only thing I have discovered that you
> > > have to be careful about is shooting with a pin point light source
> > > in the picture (like the sun), because it will band something
> > > awful.
> > 
> > This is not unique to the 202....my Noblex 150 shows this just as
> > much, if not worse. Everytime I come across one of these artifacts,
> > my fingers begin to itch for taking a Dremel cutting wheel, and open
> > up the front of the drum....since the only thing that creates this
> > ugly hard edges is the 'marginal' opening of the front of the
> > drum....if the lens would be exposed to the sun during the entire
> > rotation, the flare would be much more gradual, just like on a normal
> > SLR.
> 
> Hmmm, my favorite suspected source of these banding artifacts are
> the shutter's edges at the back of the drum. I'm thinking about
> painting them with some special deep-black paint.

Quite unlikely, as the Noblex has dull-black slit edges, and shows 
this banding just as bad. Unfortunately, my solution requires 
risking a complete camera, and until I find one that is already 
beyond economical repair, I won't be able to cut the front of the 
drum open....8-))
 
> There is probably an additional source for this problem. Just take a
> look at the sample image in the 'Tips' section of
> 
> http://www.pauck.de/marco/photo/panorama/horizon202/horizon202.html
> 
> I suspect the shiny inside of the back door for this effect. Some
> deep-black paint will help in this case as well.

Light never goes through the emulsion, with exception of Kodak HIE 
infrared (and a few other thin semi-aerials without an anti-halation 
layer).
 
> I'll try to verify this theory as soon as I'll get a Horizon that
> outlives its six month warranty without any problems. Right now,
> I'm waiting for my third one as the first two had problems with light
> leaks and transport. From the feedback I got from other users, light
> leaks at the seals of the lens drum seem to be a *major* problem.

Are you sure the shutter did not stay open during recocking?
 
> According to the dealer where I bought my Horizon, the overall defect
> rate was app. 10% over the last years (which is far better than for
> other Russian cameras). However, it has increased to app. 30% during
> the last year. 
> 
> Can you comment on this from your own experience of selling the
> Horizon, WJ?

Thusfar I haven't noticed any deterioration with the later 
models....I guess I have a better source for these cameras than the 
average shop/seller....;-))


--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]