Interesting translation of the French text to English via Gooooooogle.... (uh, hope it's okay to post this?)
<p align="left">The schedule of conditions which led Arca Swiss to the
development of Misura® gives like constraint to propose a metal monorail room
with system 9x12-4"x5 "lightest and the least cumbersome possible almost
completely compatible with the existing accessories (the only exception is the
back dimension of the new bellows Misura®, smaller).
At the beginning of this optimization, very beautiful and very ambitious project
of mechanical design, there is existing it, i.e. the rooms 6x9 and 9x12-4"x5
"including the model" field "reduced 6x9-4"x5" used by Jack Dykinga, for
example. In this optimization, if no constraint is slackened, one does not go
very far in profit of weight nor in profit of volume.
Arca Swiss thus decided to reduce while concentrating on two points:
<ul>
<li>
<p align="left">to reduce the framework postpones 9x12-4"x5 "by preserving
back-frosted" International "a standard;</li>
<li>
<p align="left">to reduce by removing a mechanism of cross movements of rocker
to the back, but by maintaining off-centrings.</li>
</ul>
<p align="left">It is the latter point which seems most prone to discussion, the
absence of rockers to the back; in this discussion, one forgets rather quickly
whom the majority of the rooms of countryside with frontal flap only have very
little, even at all, of rockers to the back. Even prestigious Linhof Technika®
offers only rockers reduced to the back (20 degrees in all the directions, is +
- 20°), nevertheless there is a little bit. But take the majority of the rooms
of countryside, look at the relative tipping angle to which you have right
between before and the back, you will see that only one support of functions
Arca Swiss with before you gives some already much: more or less 35 degrees in
horizontal axis ("tilt") and more or less 45 degrees in vertical axis ("swing").
Moreover on the Misura® model maintaining in production, there is series a
cradle goniometric "Orbix®" integrated within the front framework, the whole
posed on the traditional support of functions, which further increases the
amplitude of rocker of horizontal axis. Let us recall that Orbix® is different
from the other concurrent rockers by the fact that even by combining all the
rockers, the absence of nutation makes that there is no loss of clearness in the
corners during the combination of the rockers.
On the basis of the +-35 degrees of rocker at the base, Orbix® adds a
possibility of + - 15 degrees, which makes it possible to reach +-50 degrees,
values which exceed those offered by Linhof Technika® (+15°/-30° in horizontal
axis with front, for a before-back total of +35°/-50°). For example, one will be
able to use the +-15 degrees of Orbix® for traditional Scheimpflug in photograph
of landscape, one will supplement by a rocker at the base for a more complex
catch of sight.
The supports of traditional functions Arca Swiss are dimensioned to support a
framework of format 20x25cm without bending. The counterpart is that this
strategic part which is located between the rail and the framework of format has
a considerable weight. Arca Swiss thus proposes in Misura® a monorail room which
is not attached in its movements than many rooms of countryside, but which is
perhaps lightest monorail with extensible system 9x12-4"x5 "of the
market.
Let us give some examples of use where one can do without back rocker
<ul>
<li>
<p align="left">portrait : no the problem, you maintain the plan of
vertical film, the rail is thus horizontal, you can decentre if you wish it;
</li>
<li>
<p align="left">landscape : little problem, you will leave the vertical
film, the horizontal rail, and you will rock with before extending the zone of
clearness thanks to the rule of Scheimpflug. For traditional Scheimpflug on a
horizontal foreground, you will rock seldom more than 10-15 degrees. You have
that with Misura® amply, since you have right +-50 degrees. With a room with
additional back movements you can go until a relative angle of 90 degrees
(2x45) between before and the back: it is an extreme adjustment ever used in
landscape, for which you will be limited by optical problems, the bellows and
various sources of vignettage.
A remark however. If you read the traditional books like that of Pierre Groulx,
or the trilogy of Ansel Adams ("The camera, The negative, The print ", alas
not available in French, but available in German) you will see that
traditional framing with the room often amounts leaning the rail to tally as
with an apparatus deprived of movements, then to rectify the back body. It is
what is called an indirect off-centring . It is equivalent to do that
without back rocker by direct off-centring if one has generous off-centrings
with before and with the back, a good amplitude of rocker with before and of
very good very flexible bellows. You guessed it: Misura® proposes that of
course. The possiblities of off-centring of Misura® are as follows: side off-centring
before: +-30 mm, back: +-70 mm; total vertical off-centring (by combining the
coprs before and the back body): to the top 68 mm, to the bottom 73 mm.
</li>
<li>
<p align="left">structure : in general for a traditional sight of a
building (this is confirmed by Henri Gaud which does that almost
tous.les.jours!) one is very often satisfied with vertical off-centring to
front, one maintains the plan of quite vertical film, therefore quite parallel
with the frontage... at least if the building is traditional! You will say to
me: but I want to be able to decrease my prospect by a back rocker for
vertical axis (I read and read again the book of Pierre Groulx, I want to make
like the church of Montreal!). No the problem, simply you will be obliged with
Misura® to proceed in a different way, you will defer the tipping angle
between the body before and the body postpones only on the front one, you will
have to thus decentre not badly. With Misura®, you have +-50 degrees by
combining the rocker with the base and Orbix®. Optically of course only count
the relative positions between the objective and the film, the rail does not
intervene directly; if you have a directional support on 180 degrees like a
kneecap (a very good kneecap, of course, for example what there is best on the
market) you will not have any sorrow to give all the room places from there as
it is necessary.
</li>
<li>
<p align="left">photographs of objects with very complex movements in
studio . Clearly Misura® is not made for that, if such is your goal, then
take a traditional monorail, for example F-line or another monorail with the
movements of rocker crossed with the back.</li>
</ul>
<p align="left">
<div align="center">
<h3 align="left">Summary of the rockers and off-centrings of Misura®</h3>
</div>
<p align="left">
<table cellSpacing="2" cellPadding="0">
<tr>
<td noWrap align="left">
<p align="left">Rock at the base, centers horizontal</td>
<td noWrap align="left">
<p align="left">+-35°</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Additional Rocker Orbix®</td>
<td noWrap align="left">
<p align="left">+-15°</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Rock of vertical axis</td>
<td noWrap align="left">
<p align="left">+-45°, limited only by the bellows</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Front side off-centring</td>
<td noWrap align="left">
<p align="left">+-30 mm</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Back side off-centring</td>
<td noWrap align="left">
<p align="left">+-70 mm</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left"> </td>
<td noWrap align="left">
<p align="left"> </td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Vertical off-centring</td>
<td noWrap align="left">
<p align="left"> </td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">total upwards</td>
<td noWrap align="left">
<p align="left">68mm</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Vertical off-centring</td>
<td noWrap align="left">
<p align="left"> </td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">total downwards</td>
<td noWrap align="left">
<p align="left">73mm</td>
</tr>
<tr>
<td noWrap align="left">
<p align="left"> </td>
<td noWrap align="left">
<p align="left"> </td>
</tr>
<tr>
<td noWrap align="left">
<p align="left">Length of rail</td>
<td noWrap align="left">
<p align="left">32 cm, folding 15+17</td>
</tr>
</table>
<p align="left">
The assessment of all that:
<ul>
<li>
<p align="left">Misura® naked weighs less than 2 kg, less than the naked 6x9
F-classic (2,1kg),</li>
<li>
<p align="left">when you use the cradle goniometric Orbix®, you will not want
to use another thing any more...</li>
<li>
<p align="left">only one bellows leather cover all the focal distances of 35
mm to the teleobjective of 400 mm,</li>
<li>
<p align="left">you use the small small planks 110x110 6x9, less cumbersome
than the traditional 171x171 of the 4"x5 ",</li>
<li>
<p align="left">Misura® is folded up in a case of protection leather or metal
which protects it as well as a room from countryside with frontal flap
folding, including the optics which can remain above.</li>
</ul>
<p align="left">
To have Misura® not to make that rollfilm in 6x9 could seem a little damage,
considering the optimization of weight and obstruction carried out by preserving
the film 9x12-4"x5 format ". On the other hand if you are unconditional rollfim
and an amateur of panoramas, with a panoramic frame 6x12, you will transform
your Misura® into a panoramic apparatus with "rectilinear" optics, that you will
equip at will with all optics of the market, with all refinements of a monorail
room. And if you want, for example, to make a "panoramic joining" of some site
celebrates, randomly, a Sight of Delft, a return of hunters in winter, Cervin
seen since Gornegrat or a Large Glacier of Aletsch seen since Bettmeralp, for
example Gallery-photo will explain you the procedure by the menu...