RE: Questions about Horizon

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

On 14 Sep 98 at 19:49, James DUNN wrote:

> <SNIP>
> The only other thing I'd suggest is to get into the habit of completing
> the last wind-on at the end of the film (by pressing the rewind button and
> then winding on) before you rewind the film. It is possible for the
> shutter to come open during rewind otherwise, though obviously it
> shouldn't. Your camera may or may not suffer from this fault (and it is
> difficult to tell).
> <Snip>
> 
> Hi Peter
> 
> Not sure if I understand the above Peter, but it may be related to a problem
> I have just had.
> One of the roles from my Horizon this week had overexposure at various
> widths and on several frames, a couple of areas are completely white, from 3
> or 4 mm to over 10mm at one point, I can't work out what has caused it as it
> is so erratic....maybe you could re-explain what you are referring to
> above........

Rule #1: try to rotate the transport lever in ONE single motion, not 
in several short ones. I have seen a few shutters that went open 
during transport, but the ONLY way to prove it was by this 
multi-motion transport....a single motion was fine in every case.

Rule #2: watch out for straight sunlight into the lens, it can cause 
exposure differences with a very pronounced vertical band, wherever 
the sun is located. That's the down side of a moving lens, where a 
fixed lens would only show those hectagonal shapes (according to the 
form of the aperture)).

Rule #3: you might also want to ease the film transport if you are 
using a tough film (the difference between brands and emulsions is 
quite surprising....Kodak HIE is as smooth as velvet, but 
Konica negative takes much more force to transport). Just wind the 
film a bit 'out of the cartridge' with the rewind lever. This way 
you'll never rip the perforation, not even in the most hectic 
shooting, and it also makes it WAY easier to detect the very end of 
the film (otherwise one might be tempted to squeeze out one more 
frame, at which point the perforation might rip).



--                 
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'!]