Re: [Leica] Re: Jupiter-3 image quality

[John Collier <jbcollier@home.com>]

What f-stop were you shooting at? Were they all wide open or set the same?
What kind of chrome? Any different colour renderings?

Just curious

John Collier

> From: "Doug Richardson" <doug@meditor.demon.co.uk>
> 
> 
> A couple of weeks back I was taking some photos in the British Museum.
> Most of the time I used a Noctilux, but for four subjects I took the
> same pic with the Noctilux, a pre-war uncoated 5cm Sonnar lens, and
> with a Russian (coated) Jupiter-3 Sonnar copy, and with the Noctilux.
> 
> Once the slides had been processed, I shuffled each of the four
> 'shoot-offs' into random order, then used a lupe to sort them in terms
> of perceived image quality. There was no clear winner, so I concluded
> that the small amount of variation I was seeing between the three
> lenses was probably the effect of camera shake at 1/30 sec.
> 
> When I get some more free time, I might repeat the exercise under more
> controlled conditions, and a subject where I can use a tripod to
> eliminate camera shake.
> 
> Of course, in the era when lenses were hand assembled, there could be
> significant variations between individual examples, and this was
> probably particularly true for Soviet factories.
> 
>