[Leica] 2/75 Cron test

[stasys1 at cox.net (Stasys Petravicius)]

Mark- a good writeup. Stasys
On Apr 30, 2005, at 5:39 PM, Mark Rabiner wrote:

> On 4/30/05 4:02 PM, "Buzz Hausner" <buzz.hausner@verizon.net> typed:
>
>> I don't know about the rest of you, but I for one just hate it when 
>> lens
>> designers fail to reduce the Petzval sum and the secondary spectrum
>> through achromatization.
>>
>> Buzz Hausner
>>
>
>
> Unfortunately Erwin makes much from the Petzval Sum but forgot to 
> explain to
> us ahead of time what or who this is and why he is trying to kill 
> me/us.
> I'd bet Verbal Kint has the goods on Petzval Sum but I don't know.
>
> I found the whole thing very interesting elsewise as Erwins write-ups 
> always
> are for me and the picture which puts all the relevant glass in 
> perspective
> was to me a highlight.
> I finally now have a clear idea how big both the new 50 and 75 is/are.
>
> When we get to see some high quality babe shots from the 75 I don't 
> know.
> Me I'd love to test the glass for them I have a new model and 
> everything.
>
> Today, by the way I landed a 105 2.5 Nikkor with collapsible hood for 
> $130.
> A real classic if the formula bears any resemblance to the classic 105 
> 2.5
> Nikkor of rangefinder days I'd think would be less than half a chance.
> Maybe Verbal Kint knows for sure.
>
>
>
> Who is Petzval Sum? He is supposed to be Turkish. Some say his father 
> was
> German. Nobody believed he was real. Nobody ever saw him or knew 
> anybody
> that ever worked directly for him, but to hear Kobayashi tell it, 
> anybody
> could have worked for Sum. You never knew. That was his power. The 
> greatest
> trick the Devil ever pulled was convincing the world he didn't exist.
>
>
> Mark Rabiner
> Photography
> Portland Oregon
> http://rabinergroup.com/
>
>
>
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>