Archived posting to the Leica Users Group, 2012/01/24

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Subject: [Leica] Help with Nocti
From: benedenia at gmail.com (Marty Deveney)
Date: Tue, 24 Jan 2012 22:26:16 +1030
References: <CB4221B2.1955C%mark@rabinergroup.com> <CA8B5DF8-4137-417F-8A77-2DD8596B623D@shaw.ca> <7347E45B-53DF-4D83-A59D-F6A41830034D@archiphoto.com> <4F1E99DB.7020500@whitedogs.co.uk>

On Tue, Jan 24, 2012 at 10:15 PM, Mark Pope <mark at whitedogs.co.uk> wrote:
> With respect to the 'lack' of close focusing on the Noctilux (or Nokton
> f.1.1 for that matter), I wonder whether the reason for the 1m limit is to
> do with depth of field?

Yes, the parallax and focusing become very problematic because of the
shallow depth-of-field.  Correcting a lens that fast that close is
also difficult.  The Canon Ef 50mm f1.0 focuses to 0.6m but its
performance drops enormously closer than 1m, despite floating and
aspherical elements.

Marty


Replies: Reply from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] Help with Nocti)
In reply to: Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Help with Nocti)
Message from jbcollier at shaw.ca (John Collier) ([Leica] Help with Nocti)
Message from henningw at archiphoto.com (Henning Wulff) ([Leica] Help with Nocti)
Message from mark at whitedogs.co.uk (Mark Pope) ([Leica] Help with Nocti)