Archived posting to the Leica Users Group, 2010/11/07

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] IMG: 50 vs 90 vs 75 field of view at minimum distance
From: jhnichols at lighttube.net (Jim Nichols)
Date: Sun, 7 Nov 2010 21:30:23 -0600
References: <AANLkTikqTk27zEt895SKAYj6cBs_rsOUpVPKXnKuShJ2@mail.gmail.com>

Hi Geoff,

I see minimal difference between the 50 and 90, but the 75 makes quite a 
difference in the background.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Geoff Hopkinson" <hopsternew at gmail.com>
To: "Leica Users Group" <lug at leica-users.org>
Sent: Sunday, November 07, 2010 6:05 PM
Subject: [Leica] IMG: 50 vs 90 vs 75 field of view at minimum distance


>I posted recently on the advantages of the APO Summicron M 75 ASPH at
> mimimum focus distance (.7m) compared to the APO Summicron M 90 ASPH (1.m)
> and the 50 was mentioned as too close to the 75 in the same discussion.
> Currently a bit house bound so I set up a controlled experiment in my
> garden. Subject focus distances within approx +- 5mm (using a macro rail
> type setup).  All at f/4. These are uncropped (downsized for web of 
> course)
> and identically processed. Not wonderful composition I know. Framed to 
> place
> a detail to focus on within the rangefinder patch corner. You can just use
> 'next' arrow from first frame if desired.
>
> Here's the 50
> http://gallery.leica-users.org/v/hoppyman/2/50.jpg.html
> My 90 (set to 1m to simulate the APO 90's minimum)
> http://gallery.leica-users.org/v/hoppyman/2/90.jpg.html
> The 75
> http://gallery.leica-users.org/v/hoppyman/2/75.jpg.html
>
>
> Cheers
> Geoff
> http://www.pbase.com/hoppyman
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
> 




In reply to: Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] IMG: 50 vs 90 vs 75 field of view at minimum distance)