9. siecc10 / carlosgaona
This apparatus consists of a box containing a camera, A, and a frame, C, containing the desired number
of plates, each held in a small frame of black Bristol board. The camera contains a mirror, M, which pivots
upon an axis and is maneuvered by the extreme bottom, B. This mirror stops at an angle of 45°, and
sends the image coming from the
objective to the horizontal plate, D, at the upper part of the camera.
The image thus reflected is righted upon this plate.
As the objective is of short focus, every object situated beyond a distance of three yards from the
apparatus is in focus. In exceptional cases, where the operator might be nearer the object to be
photographed,
the focusing would be done by means of the rack of the objective. The latter can also slide up and down,
so that the apparatus need not be inclined when buildings or high trees are being photographed. The
door, E, performs the role of a shade. When the apparatus has been fixed upon its tripod and properly
directed, all the operator has to do
is to close the door, P, and raise the mirror, M, by turning the button, B, and then expose the plate. The
sensitized plates are introduced into the apparatus through the door, I, and are always brought
automatically to the focus of the objective through the pressure of the springs, R. The shutter of the
frame, B, opens through a hook, H, within the
pocket, N. After exposure, each plate is lifted by means of the extractor, K, into the pocket, whence it is
taken by hand and introduced through a slit, S, behind the springs, R, and the other plates that the rame
contains. All these operations are performed in the interior of the pocket, N, through the impermeable,
triple fabric of which no
light can enter.
An automatic marker shows the number of plates exposed. When the operations are finished, the
objective is put back in the interior of the camera, the doors, P and E, are closed, and the pocket is rolled
up.
The apparatus is thus hermetically closed, and, containing all the accessories, forms one of the most
13. siecc10 / carlosgaona
f the subject is poorly lit, the AF-assist illuminator will light to assist the focus operation when the shutter-
release button is pressed halfway. The AF-assist illumi- nator is not available in or mode or
when Off is selected for Custom Setting 7 (AF Assist).
For the AF-assist illuminator to function correctly, the lens must have a focal length of 24–200mm and the
subject must be in range of the illuminator (0.5– 3m/1 ́8 ̋–9 ́10 ̋). Lens hoods should be removed.
Focus Lock
Focus lock can be used to focus on a subject that will not be in one of the five focus areas in the final
composition. It can also be used when the autofocus system is unable to focus ( 121). Single or
dynamic area AF is recommended when using focus lock ( 89).
1Position the subject in the center focus area and press the shutter-release button halfway.
2Check that the in-focus indicator (●) appears in the viewfinder. Focus will lock when the in-focus indicator
appears, and remain locked while the shutter-release button is pressed halfway. Focus can also be locked
by pressing the AE-L/AF-L but- ton while the shutter-release button is pressed halfway. Focus will remain
locked while the AE-L/ AF-L button is pressed, even if you later remove your finger from the shutter-release
button.
3Recompose the photograph and shoot. Do not change the distance between the camera and subject
while focus lock is in effect.
Taking Multiple Photographs Without Refocusing
Focus will remain locked between shots if the shutter-release button is kept pressed halfway. In continuous
mode ( 21), focus will remain locked if the AE- L/AF-L button is kept pressed between shots.
Manual focus is available for manual focus lenses or when autofocus does not produce the desired results.
To focus manually, set the focus-mode selector to M and rotate the lens focus ring until the image
displayed on the clear matte field in the viewfinder is in focus. Photographs can be taken at any time, even
when the image is not in focus.
A-M Selection/Autofocus with Manual Priority
When using a lens that offers A-M selection, select M when focusing manu- ally. With lenses that support
14. siecc10 / carlosgaona
Choosing a Flash Sync Mode
Press the button and rotate the command dial. The current flash sync mode is displayed in the control
panel.
Using the Built-in Flash
, , , , and modes: Choose the flash sync mode as described on the
preceding page. The flash will pop-up as required when the shutter- pressed halfway, and fire when a
photograph is taken.
P, S, A, and M modes: Press the button to raise the built in flash and then choose a flash sync
mode as described on the preceding page. Select a metering method and set exposure before taking
photographs.
Lowering the Built-in Flash
To save battery power when the flash is not in use, press it gently down- ward until the latch clicks into
place.
Using the Built-in Flash
Use with lenses with a focal length of 18–300mm (CPU lenses; the maximum focal length when the built-in
flash is used with non-CPU lenses is 200mm) and remove lens hoods to prevent them from casting
shadows on the subject. The flash has a minimum range of 60cm (2 ́), and can not be used in the macro
range of macro zoom lenses. See “Optional Accessories” (
108) for details.
If the flash is used in continuous shooting mode ( 21), only one picture will be taken each time the
shutter-release button is pressed.
After the built-in flash has been used for several consecutive shots, the shutter re- lease may be briefly
disabled to protect the flash. The flash can be used again after a short pause.
See the Appendix for information on the type of flash control used by the built-in Speedlight ( 127).
Optional Flash Units (Speedlights)
See “Optional Accessories” for information on using optional flash units (
109).
35. siecc10 / carlosgaona
¿Qué es una
persona?usuario
‣ ... es
arquetípico y ficticio
• ... es usuario arquetipico y
‣ ... que describe
ficticio
comportamientos y
motivaciones
• ... que describe
‣ ... de forma
comportamientos y
representativa,
motivaciones para un
grupo mayor de
potenciales usuarios
• ... de forma representativa, para
un grupo mayor de potenciales
‣ ... basados
usuarios
(idealmente) en la
observación de
• ... basados (idealmente) en la
personas reales.
observación de personas
reales.
38. siecc10 / carlosgaona de compra
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