Re: Horizon 202 - banding problems

[samos@xxxxxxx]

> 
> Keith Davison wrote:
> > 
> > I have just obtained an Horizon 202 and am experiencing
> > problems with horizontal banding.
*snip*
> > Perhaps these 202s have improved machining on the slit edge to
> > allow the extra speed?  Anyone willing to check?
> > 
> > Cheers,
> > Keith Davison
> 
> Keith,
> 
> Bingo!
> 
> Easy....
> 
> Use slide film (which is much more sensitive to exposure variations) and
> take a picture of the sky on a nice clear day.  With ASA 100, take a
> range of shots F16, F11 & F8 at 1/250 of a second, and try a few at
> 1/125 and 1/60.  I'll bet if you look carefully, you will see the lines
> on the fastest speed, diminishing or non-existent at slower speeds.
> 
> OK all you Horizon owners, give it a try & report in!!
> 

Alan (Keith, et-al) -

I just picked up a 202 on Sunday. I've not yet seen the banding you mention,
but I've also not tried testing for it. Certainly, I will. Soon.

I *do* however, have a light leak. Rather than try to describe it, I've put
up a web page.
		http://backyard.ddb.com/H202.shtml

Just as I was about to write this, the person I bought if from wrote asking
to see an example. :)

It sounds (to him) like something he's just dealt with. If it is, I'll post
his fix to that page.

Peace - Randy




-- 

Randy Samos                             	"Absence of evidence
samos@xxxxxxx					 is not evidence of
http://backyard.ddb.com/			 absence" C. Sagan