Archived posting to the Leica Users Group, 2011/10/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It's another way to separate a photographer and the money they don't have :-) http://www.hartblei.de/en/hartbleicam2.htm On Wed, Oct 19, 2011 at 1:42 PM, Robert Adler <rgacpa at gmail.com> wrote: > What's an HCam? > > On Wed, Oct 19, 2011 at 12:06 PM, Richard Man > <richard at richardmanphoto.com>wrote: > > > 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> > > > > _______________________________________________ > > 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>