[Leica] Canon 1D X -- the real marker to the end of the mega-pixel wars?

[richard at richardmanphoto.com (Richard Man)]

Honestly, this is why the HCam sounds so appealing too if one is interested
in the shift and tilt. You can do that with a Cambo or Arca, but they are
bigger...

On Wed, Oct 19, 2011 at 9:29 AM, Robert Adler <rgacpa at gmail.com> wrote:

> Hi George,
>
> You don't place the GG on the shimmed back holder. The GG has it's own
> holder that fits to the back of the camera just like the DB holder.
>
> It is not easy to focus properly with the GG holder; I primarily use it for
> framing and ensuring my polarizing filter is positioned where I want it.
>
> I have a Leica Distometer to find the closest distance when I'm not using
> tilt. I did some work to find out what the best f-stop was to use to get
> the
> greatest hyperfocal distance. So at f/11.3 I can get from about 3m to
> infinity in focus. If my distometer says the closest object in my frame is
> >= 3m, I'm all set. If closer, I can use focus bracketing. This is for the
> 35mm.
>
> Haven't tested the 80mm yet as I tend to use tilt with it (it is the
> shortest lens for which tilt is available on the Alpa system). I need to do
> some testing with it not only to get the right hyperfocal distances at the
> best f/stop but also to see how I far I can close down to get more of the
> Scheimpflug hyperfocal plane in focus.
>
> This digital MF is a whole new ball of wax for most (with tech cams). Great
> results (IMO) once you get it all figured out.
>
> Probably much more than you ever wanted to know...
> Best,
> Bob
> On Wed, Oct 19, 2011 at 9:00 AM, George Lottermoser <imagist3 at mac.com
> >wrote:
>
> >
> > On Oct 18, 2011, at 11:38 PM, Bob Adler wrote:
> >
> > > You are correct of course. The holder for my back, on the Alpa system,
> > comes with gaskets that are between .01 and .05mm, in .01mm increments.
> You
> > have to calibrate your back, as in this video:
> > > http://www.optechsdigital.com/Videos.html
> > > Scroll down to the three videos under Shimming the Alpa.
> > >
> > > So when I did it to my system, .01mm made all the difference. Pretty
> > sensitive!
> >
> > Interesting.
> > It's unclear to me where the ground glass comes into play.
> > If you've shimmed for the sensor
> > and placed the ground glass on that same adapter
> > you've also shimmed the ground glass
> > (or am I missing something?)
> >
> > Regards,
> > George Lottermoser
> > george at imagist.com
> > http://www.imagist.com
> > http://www.imagist.com/blog
> > http://www.linkedin.com/in/imagist
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
>
>
>
> --
> Bob Adler
> Palo Alto, CA
> http://www.rgaphoto.com
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>



-- 
// richard <http://www.richardmanphoto.com>