[W&B] Magic Lantern Lens vs. Petzval Portrait Lens

[Milan Zahorcak]

Yes, most photographic lens from the very beginning were/are.  Process
lenses, for example, aren't - usually some intermediate working distance.
 
mz
 
 

-----Original Message-----
From: woodandbrass-bounces at kjsl.com [mailto:woodandbrass-bounces at kjsl.com]
On Behalf Of Dan Colucci
Sent: Monday, January 28, 2008 10:08 AM
To: Collectors of 19th Century Cameras &Photographica
Subject: RE: [W&B] Magic Lantern Lens vs. Petzval Portrait Lens


Are you saying the Petzval Portrait Lens is optimized for infinity ?  

  _____  

From: woodandbrass-bounces at kjsl.com [mailto:woodandbrass-bounces at kjsl.com]
On Behalf Of Milan Zahorcak
Sent: Monday, January 28, 2008 12:53 PM
To: 'Collectors of 19th Century Cameras &Photographica'
Subject: RE: [W&B] Magic Lantern Lens vs. Petzval Portrait Lens


 
There are differences between ML and PL (ohh!, I like the abbreviations).
Both are Petzval designs, but use determines whether  optimized for infinity
focus, or obviously, projection.  But hard to see the difference if you do
either with the other.
 
Physical characteristics, at first glance, I'd guess it's an ML.  Short hood
(angle for projection) and that simple knob.
 
I could do a piece on portrait vs projection lenses - anyone interested?
 
mz
 
 
 
 

-----Original Message-----
From: woodandbrass-bounces at kjsl.com [mailto:woodandbrass-bounces at kjsl.com]
On Behalf Of DColucci at aol.com
Sent: Monday, January 28, 2008 9:32 AM
To: woodandbrass at kjsl.com
Subject: [W&B] Magic Lantern Lens vs. Petzval Portrait Lens



ok, I got this lens today and it is indeed a Petzval design with 2 groups, 4
elements with the rear elements "spaced" with a ring.  Only trouble is there
is NO provision for any stops.  I do know that Darlot ( in the 1880's at
least )  made portrait lenses without provision for stops - but those were
advertised for Magic Lantern use.  I also think I recall that some very
early Portrait Lenses didn't come with provisions for stops as they were
just meant to be used wide open.. so what do I have here, a Portrait lens or
a ML lens  ?  
 
Thanks
Dan
 
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem
<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=140199480134&ssPage
Name=STRK:MEWN:IT&ih=004>
&rd=1&item=140199480134&ssPageName=STRK:MEWN:IT&ih=004
 
 
 
PS -  ( there are no markings on it )




  _____  

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