[Leica] Another M9 question

[photo.forrest at earthlink.net (Phil)]

The Navy Photographic School, now part of Defense Information School,
hammers flash and guide number theory into students in the second week
of basic photography. Something like 10 rolls get exposed with
equivalent exposure compositions, varying up only distance and
aperture. For this we had no TTL, we had to use our brains shooting
Nikon F3 bodies and old non-TTL or GN correcting flashes. 

It helped me immensely since I now use my Nikon SB25 and SB26 on my M8
with no problem. I see the distance, calculate it and shoot. If I blow
out or under expose a photo now it's because of macro distances or the
capacitor not being recharged fully.

All that said, I'd rather not use flash but sometimes it's that little
bit extra that gives an image a bit more detail where it would be lost
in shadow or just plain flat. 

Phil Forrest


On Tue, 05 Oct 2010 20:49:18 -0400
Mark Rabiner <mark at rabinergroup.com> wrote:

> Your right its one stop of light for half or twice distance.
> 
> --------------------
> Mark William Rabiner
> Photography
> http://gallery.leica-users.org/v/lugalrabs/
> mark at rabinergroup.com
> 
> 
> > From: Philip Forrest <photo.forrest at earthlink.net>
> > Reply-To: Leica Users Group <lug at leica-users.org>
> > Date: Tue, 5 Oct 2010 20:40:25 -0400
> > To: Leica Users Group <lug at leica-users.org>
> > Subject: Re: [Leica] Another M9 question
> > 
> > Its a 1 stop difference, not two.
> > Phil Forrest
> > 
> > -----Original message-----
> > From: Mark Rabiner <mark at rabinergroup.com>
> > To: Leica Users Group <lug at leica-users.org>
> > Sent: Tue, 05 Oct 2010, 20:10:42 EDT
> > Subject: Re: [Leica] Another M9 question
> > 
> > DOF (depth of field) is a mixed bag when you have things perfectly
> > in focus but dropping off fast into the darkness with the inverse
> > square law. Or whitening out before you the same as things get
> > closer. With each doubling or halving of light you gain or loose
> > two f stops. That's the inverses square law. As I understand it.
> > Having flunked math. You can not miss nailing your focus with flash
> > as it allows you to stop down a bit or stop in fact way way down in
> > fact: But there is only one point front to back in which its
> > exposed right. Not that you even it out like crazy with Photoshop
> > and grad masks.
> > 
> > Bounce flash off the ceiling is a good way around this.
> > 
> > 
> > 
> > --------------------
> > Mark William Rabiner
> > Photography
> > http://gallery.leica-users.org/v/lugalrabs/
> > mark at rabinergroup.com
> > 
> > 
> >> From: Tom Schofield <tomschofield at comcast.net>
> >> Reply-To: Leica Users Group <lug at leica-users.org>
> >> Date: Tue, 5 Oct 2010 15:03:19 -0700
> >> To: Leica Users Group <lug at leica-users.org>
> >> Subject: Re: [Leica] Another M9 question
> >> 
> >> Very true!  I bought the sf20 when I bought the M7 and maybe used
> >> it
> > twice!
> >> Which is to a large part why I don't want to spend $500-800 on a
> >> new
> > flash!
> >> 
> >> Sometimes when I take shots of my wife's preschool class, I want
> >> more DOF
> > than
> >> available light allows, and I am thinking of trying macro with it
> >> either
> > with
> >> a viso or a macro adapter, if I could find one used.  (I can get
> >> pretty
> > close
> >> with the 75mm, too.)
> >> 
> >> Of course, a cheap canon dslr with an R adapter might be an easier
> >> choice
> > for
> >> macro.
> >> 
> >> Tom
> > 
> > 
> > 
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> > 
> > 
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> 
> 
> 
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