[Leica] Apo Telyt Mod System w/ and w/o converters

[Edward Caliguri <caliguri@rcn.com>]

Great Stuff Robert!
    Are all those F/2.8?? I find that using the Modular series (400, 560,
800) is a bit more shallow - what do your 1.4X and 2X backs give you? I also
find that, using the modular backs instead of converters (the 1.4x converter
is OUTSTANDING on the 400 2.8, however, but the 2x is a bit less less than
expected with the 560 and 800 (probably vibration). I am now going the
opposite way - in terms of weight - using Doug Herr's suggested 400 and 560
F/6.8 achromats. LIGHT and focus FAST. SLOWWWW .... but portable.

    back to the mod systems though - So how does your DOF using the modules
vs. Converters turn out? Would optical 'law' state it should not change?

    Rugby must have been fun!

    Thanks,
    EC
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> Date: Wed, 09 Oct 2002 20:33:48 -0300
> From: "Robert G. Stevens" <robsteve@hfx.andara.com>
> Subject: [Leica] Do you really need AF when using a R8?
> Message-ID: <5.1.0.14.0.20021009201134.0394cc78@pop.hfx.eastlink.ca>
> References: 
> 
> Every time I use the 400mm I manage to get some decent in focus shots, even
> when shooting wide open.  The finder is just so bright and the focus so
> smooth on the 400mm that after a bit of practice, I can follow focus using
> my thumb from the mono pod hand and keep a lot of things in focus.
> 
> Below is an image taken last week, shot with a R8 and 400mm f2.8 APO-Telyt .
> 
> http://home.istar.ca/~robsteve/photography/PAW2002/wk39.htm
> 
> Just fractions of a second before the main:
> 
> http://home.istar.ca/~robsteve/photography/PAW2002/wk39alt.htm
> 
> I just finished shooting a girls Rugby game.  I just developed the E200 and
> it looks good.  When it drys I will scan   a few a good images and post them.
> 
> Regards,
> 
> Robert 

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