[Leica] IMG: stacked extenders!

Sun Dec 14 14:08:25 PST 2014

1019 Effective, compared to FF 35......

However, the actual FL of the lens is 280*1.4*2= 784mm

Frank Filippone
Red735i at verizon.net

-----Original Message-----
From: LUG [mailto:lug-bounces+red735i=verizon.net at leica-users.org] On Behalf
Of John McMaster
Sent: Sunday, December 14, 2014 10:17 AM
To: Leica Users Group
Subject: Re: [Leica] IMG: stacked extenders!

280 * (1.4 * 2 *1.3 (APC-H)) = 1019mm

john

-----Original Message-----
From: LUG [mailto:lug-bounces+john=mcmaster.co.nz at leica-users.org] On Behalf
Of Mark Rabiner
Sent: Monday, 15 December 2014 6:49 a.m.
To: Leica Users Group
Subject: Re: [Leica] IMG: stacked extenders!

So is that 280 * 3.25  = 910mm's ?

On 12/13/14 7:39 PM, "Doug Herr" <wildlightphoto at earthlink.net> wrote:

> Had to try it: 280mm f/4 APO + 1.4x APO-Extender-R + 2x APO-Extender-R 
> on the R8/DMR (on a big Gitzo braced against a 6" x 12" post)
> 
> http://www.wildlightphoto.com/birds/picidae/melanerpes/lewood04.html
> 
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com
> 
> 

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