RE: Horizon 202

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

On 15 Jan 99 at 20:43, Varrą Norbert wrote:

> > Willem-Jan,
> > 
> I am sure that you have dessembled already both cameras...;-)

Never been that far into the mechanism....:-))

> Can the old version be easily modified to the faster one?

Don't think so....

> Streaks: I have experienced and reported them to this list in last
> March.
> The appeared only on clear Italian Alpian sky.
> Now I can accept that it is caused by slit irregularity at small slits,
>  I will test it as soon as I find a clear sky...

I still don't believe the rough-edge theory....what might be
happening instead is reflection of either edge....such an effect
would also increase with decreasing slit-width, and I vaguely recall
that I once have stared at shots from dazzling white mountains
against a dark sky, where it seemed as if the mountain peaks
'leaked' into the blue in vertical orientation....very subtle, and I
wasn't convinced this had nothing to do with developing 'bleeding'
effects either.
I think it is safe to assume that all swing optics have a much 
thicker slit-edge than normal thin-blade shutters (focal plane or 
lens shutter).

Oh btw, my Noblex 150 shows as much flare as the 202 when shooting
right into the sun....no gain in that department....makes one wonder
what kind of tricks are needed with 360 degree shots in the printing
stage, where the sun is included in the frame....




--                 
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'!]