PhaseOne H 10 M645 User manual

H 10 M645
GETTING STARTED
Phase One A/S
Roskildevej 39
DK-2000 Frederiksberg
Denmark
Tel [phone]
Fax [phone]
Phase One U.S.
24 Woodbine Ave
Northport, New York
11768 USA
Tel [phone]
Fax [phone]

Notice
The name Phase One is a trademark of Phase One A/S.
The names Apple Macintosh, Mamiya, Microsoft Windows and Adobe
Photoshop are all registered trademarks of their respective companies.
All specifications are subject to change without notice.
Phase One takes no responsibility for any loss or damage sustained while using
their products.
This manual ©2002, Phase One A/S Denmark. All rights reserved. No part of
this manual may be reproduced or copied in any way without prior written per-
mission of Phase One.
Printed in Denmark.
Part #: 80013001

Table of Contents
1
1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Special H 10 M645 features . . . . . . . . . . . . . . . . . . . . . . . . . .3
Auto exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Double exposure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Image orientation detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
IR filter on the CCD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3 Getting ready for taking pictures . . . . . . . . . . . . . . . . . . . . .6
Mounting the viewfinder mask . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Mounting the H 10 M645 on the Mamiya 645AF . . . . . . . . . . . . . .7
Use of cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Using manual focus lenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Cleaning the IR filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Cleaning between the IR filter and the CCD . . . . . . . . . . . . . . . . . .10
5 Current limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Continuos capture mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1 Contents

H 10 M645 Getting Started
2
1 Introduction
The H 10 for M645 is a single shot digital camera back for the
innovative Mamiya 645 AFD camera. The Mamiya 645
utilises a hybrid TTL phase-difference-detection type auto-
focus system. Further more the Mamiya 645AF provides
auto exposure settings. The Mamiya 645AFD with a H 10
M645 back encourages all kinds of photographic uses from
portraiture and wide-angle photography to high speed
shooting to capturing fast action with telephoto lenses. This
exiting combination is a result of a joint development project
between Phase One and Mamiya-OP.
The functionality of the H 10 M645 is well integrated with
the Mamiya 645AFD camera. The H 10 M645 camera back
communicates with the Mamiya camera through a fast inter-
nal electrical computer interface.
The H 10 M645 is based on the highly recognised Phase One
camera back technology. The application software for the H
10 M645 is the same as for all other Phase One single shot
products. The Capture One User Guide is a general manual
for these products. This Manual “H 10 M645 - Getting
Started” covers only specific H 10 M645 features and func-
tionality.

H 10 M645 Getting Started
3
2Special H 10 M645
features
Auto exposure
The Mamiya 645AFD can work in different auto exposure
modes. This is fully supported by the H 10 M645, which com-
municates the equivalent film speed of the digital back to
the Mamiya 645AFD camera.
The default film speed of the H 10 M645 camera back is ISO
50. However this setting can be changed to 100, 200 or even
400 ISO, inside the Capture One application.
It is recommended to capture images using a film curve.
That is done by selecting the film curve in the Capture One
software. Click the camera icon in the icon bar, and select
“Film Curve” or “Film Curve, Natural Black”.
When capturing with auto exposure modes, exposures be-
tween 1/4000 sec. and 30 sec can be obtained. Please note
that images captured with exposure times longer than 2 sec.
can be degraded because of increased digital noise.

H 10 M645 Getting Started
4
Double exposure protection
When using the M645 with a H 10 M645 it is not possible to
accidently double expose the image by capturing one image
quickly after another. The H 10 communication with the
M645 is disabling capture functionality in the camera when
necessary.
At the end of an image exposure the image information in
the CCD has to be moved from the CCD to the host com-
puter. During this short period of time the CCD must be pro-
tected from light exposure. The H 10 M645 ensures a safe
emptying of the CCD by ignoring the shutter release from
the Mamiya camera.
Image orientation detection
The CCD in H 10 M645 is positioned in landscape orienta-
tion. Whenever an image is captured in portrait position by
rotating the camera, an internal sensor detects this new po-
sition and the image will appear as a correctly oriented im-
age in the Capture One application.
Camera orientation:
Images can be captured in all three positions - and will appear
with the correct orientation in the Capture One software.

H 10 M645 Getting Started
5
IR filter on the CCD
The IR filter (Phase One TG1 Infrared cut-off filter) is placed
on top of the CCD.
The filter may not be removed for several reasons.
lThe focusing of the H 10 camera back will be damaged
lIt is only possible to remount the filter without dust in
between the filter and the CCD if you have access to
special clean room facilities.
lThe Phase One Product Warranty is terminated.

H 10 M645 Getting Started
3Getting ready for
taking pictures
Mounting the viewfinder mask
The image area of the Mamiya 645AF is approximately 6 cm
x 4.5 cm. The image area of the H 10 M645 is 2.4 cm x 3.6 cm.
A H 10 M645 viewfinder mask is provided. This mask has to
be mounted beneath the original focusing screen. The
viewfinder mask is positioned in the bracket that holds the
focusing screen. Please refer to the Mamiya 645 AFD In-
structions “Changing the focus screen” before the
focus screen is mounted.
The black mark on the
mask must be orien -
tated to the left front
corner of the bracket.
6

H 10 M645 Getting Started
7
Mounting the H 10 M645 on the Mamiya 645AFD
The H 10 M645 is fully integrated with the camera house
and acts as a true part of the whole camera system.
When no cassette is attached to the Mamiya 645 AF camera
house the mirror is up and the shutter is open. This is the
correct position, when no film cassette is attached.
When attaching the M645 to the camera house, the shutter
will close and the mirror comes down.
It is important to ensure that the bottom part of the H 10
M645 camera back is pressed well into the locking mecha-
nism before the upper locking mechanism is pressed to-
gether. Failure to do this can in some circumstances bring
the Mamiya camera house in an error state of continuos
opening and closing the shutter. (The same procedure is rec-
ommended for all film cassettes).
In case this error appears you simply have to remove the H
10 M645. Notice if the shutter is in the closed position, at-
tach and remove the H 10 to make sure that the camera
house gets in the correct starting position.
To avoid that the H 10 is released by mistake from the cam-
era house, you can use the enclosed screwdriver to lock the
H 10 M645 locking mechanism.
Step 1 Step 3 Step 2

H 10 M645 Getting Started
8
Use of cables
Using auto focus lenses:
No cables are required be-
tween the H 10 M645 and
the Mamiya 645AFD
when auto focus lenses
are used.
Flash sync cable must be
connected to the Mamiya
645AFD camera house.
When using AF lenses the
flash sync cable must
NOT be connected to the
camera back.
CORRECT
NOT CORRECT