[Leica] New Jupiter arrives

[philippe.orlent at pandora.be (Philippe Orlent)]

Thanks, Daniel.
I've contacted Oleg Khalyavin and will send him my package shortly, just to
be sure everything is everything CLA'd and the lenses are adapted to the
body.
Meanwhile, I did a black lacquering experiment on the frontplate of the Kiev
4AM myself and although being a bit stressed before seeing the final result,
I'm pretty pleased with it. That's the fun with these camera's: they're so
cheap that mistakes are easily forgotten.


> From: Daniel Ridings <dlridings@gmail.com>
> Reply-To: Leica Users Group <lug@leica-users.org>
> Date: Thu, 25 Aug 2005 13:30:50 +0200
> To: Leica Users Group <lug@leica-users.org>
> Subject: Re: [Leica] New Jupiter arrives
> 
> On 8/24/05, pswango@att.net <pswango@att.net> wrote:
>>  Hoping for the best, though I have been warned about uneven QC on this
>> model.
>>  We'll see.  Anyway, it only cost $20 plus shipping.
> 
> I hope it works out, Phil.
> 
> Quality control can be many things. My limited exerience (half-a-dozen
> lenses) has been that the glass is just fine. But there are shims in
> the lens body to gauge how far the lens is from the film plane
> (Contax/Kiev's are not as solidly built as IIIc, IIIf, and later
> Leicas, where the body is one piece). So the body thickness could vary
> a bit. To counter this, the shims in the lenses could be thinner or
> thicker accordiningly.
> 
> And ... as Dante Stella has demonstrated, the dimensions were never
> the same as Leica, not even in the Zorkis and other screw-mounts, to
> start with.
> 
> It appears that the factory just threw in a shim. Sometimes it will be
> too thick, sometimes too thin. This will cause focus to fall a little
> in front or a little in back of what you think you are focusing on.
> 
> The Jupiter-8's seem to be consistently wrong, if they are wrong, so
> once you've figured it out, you just adjust the rangefinder image
> slightly to push the lens further away or closer to the film plane.
> It's usually just a tad.
> 
> But if it is off, it can result in slightly out of focus, soft images.
> But, as I said, this doesn't necessarily mean anything is wrong with
> the glass. Just the dimensions.
> 
> So take some close-up shots at wide-aperture to see where the focus is
> falling. Mine is just ever so slightly off (slightly behind). So I
> focus and then move the focus ring a slight tad closer. Actually, it's
> so close that beyond 1 meter, I don't usually bother with it. At two
> meters the little depth of field as f2.0 is enough to compensate.
> 
> Now Jupiters-12's .. that's another story. They can be pretty far off.
> Don't ask me why.
> 
> Enjoy! I hope it works out for you.
> 
> Daniel
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>