Phase One Digital Camera 85280002 User Manual

D I G I T A L  
S T U D I O  
C A M E R A  
S Y S T E M  
Digital Camera Back for  
4"x5" Large Format  
Cameras  
Users Guide  
Edition 3.0  
85280002  
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Ta b le o f Co n t e n t s  
For Your Safety..................................................................................................................2  
Section 1: Introduction......................................................................................................3  
Section 1.1: How it Works............................................................................................3  
Section 2: Back Panel Description .....................................................................................5  
Section 3: Mounting and Unmounting the Camera Back..................................................7  
Section 3.1: Mounting the Camera Back ......................................................................7  
Section 3.2: Unmounting the Camera Back..................................................................7  
Section 4: Care and Cleaning ............................................................................................8  
Section 4.1: Storage and Handling................................................................................8  
Section 4.2: Cleaning the Camera Back Case................................................................8  
Section 4.3: Cleaning the CCD Sensor.........................................................................9  
Section 5: Camera Back Specifications.............................................................................10  
1
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
For Your Safety:  
!
Read this manual carefully before turning on your system.  
If any component of your system becomes wet or damaged, remove  
power by unplugging the power unit from the wall socket.  
Keep these instructions handy for reference by you or others.  
If you receive a shock while using this equipment, remove power and con-  
tact a licensed electrician immediately.  
Follow all instructions and warnings dealing with your system.  
Never try to open any of your PhotoPhase units; electrical shock may result.  
If your units require service, contact your licensed PhotoPhase dealer.  
Warning: Electrical equipment may be hazardous if misused. Always super-  
vise children when electrical equipment is present.  
2
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Se ctio n 1  
The PhotoPha se Dig ita l Ca m era Ba ck  
The PhotoPhase digital camera back for large format cameras will enable  
you to use your usual 4" x 5" large format cameras and lenses to take  
digital photographs in color. The camera back fits into a standard spring-  
back film loading mechanism, just like a normal camera back.  
Se ctio n 1 .1  
Ho w it Wo rk s  
The camera back contains a light sensitive element called a CCD (charge  
coupled device). This device contains many tiny light sensitive areas,  
each of which maps to one pixel in the final photograph. A pixel is one  
picture element or picture cell, and is analogous to the grain size of film  
stock.  
The camera back uses a sensor with three linear CCDs; there is one line  
for each additive primary color: red, green, and blue (RGB). Each line,  
or array, is one pixel high and 5000 pixels wide. In the final image, the  
three RGB lines are digitally mixed to produce a single line of pixels in  
full color.  
Before exposure, called capturing in digital techniques, the image is  
focussed onto the plane in which the CCD array will travel. At the start  
of the capture process the array is positioned at the top of the area to be  
scanned. During capture, the RGB lines are read, the CCD sensor is  
moved a distance equal to the height of one pixel, and then the next lines  
are read. This is repeated until the entire image area has been covered.  
This process is called scanning.  
The camera back contains the basic sensory electronics for image cap-  
ture (the CCD and analog to digital converter). The camera back also  
contains microprocessors which control the camera back, processes  
incoming images, and communicate with your computer. The Phase  
One software, running on the computer, makes it possible for you to  
calibrate and control the camera back, view your images, and make  
3
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Protection  
Legs  
Dust Cover  
Ha ndle  
(in open  
position)  
SCSI  
Connector  
CCD Sensor  
Sca n  
Direction  
Sca n Area  
Fig.1 Back Panel of the PhotoPhase Plus  
4
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
image processing settings to perfect your images. Final images are con-  
verted into the TIFF file format, which is readable by nearly every other  
image processing and desk top publishing program.  
Se ctio n 2  
Ba ck Pa n e l De scrip tio n  
Referring to Fig.1, the following back panel features can be seen:  
• CCD Sensor: This is a linear light sensitive surface. It scans across the  
entire exposure area to capture the full image.  
• Scan Direction: The arrow shows the direction of the CCD sensor's  
movement during camera back operation. This information is useful  
when troubleshooting your system.  
• SCSI Connector: The camera back communicates with your comput-  
er through a SCSI cable connected here.  
• Scan Area: The rectangular area on the back panel is the scan area.  
The CCD sensor moves across this area during scanning.  
• Protection Legs: The protection legs help to protect the scan area  
when the camera back is placed on a horizontal surface.  
• Dust Cover: This aluminum cover slides over the scan area. The cover  
must be slid all the way up to fully expose the scan area before use (as  
shown). Always store your camera back with the dust cover fully  
closed to protect the CCD and other internal components.  
5
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Fig.2 PhotoPhase camera back mounted on a Sinar camera  
6
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Se ctio n 3  
Mo u n tin g a n d Un m o u n tin g th e Ca m e ra Ba ck  
The camera back fits to your camera just like a normal camera back. Use  
the following procedures to mount and unmount the camera back:  
Se ctio n 3 .1  
Mo u n tin g th e Ca m e ra Ba ck  
1. Set your film mounting assembly in the portrait or landscape posi-  
tion.  
2. Pull back the focusing screen release lever on your camera to make  
room to slide the camera back into place in front of the screen.  
3. Gently slide the camera back into place until it will slide no further.  
4. Return your camera's focusing screen release lever to the closed posi-  
tion to hold the camera back in place.  
5. Slide the camera back's dust cover all the way up to fully expose the  
scan area.  
6. Be sure to install a Phase One optical filter to reduce infrared light  
before using the camera back.  
See Fig.2 for an example of a PhotoPhase camera back fitted to a large  
format camera.  
Se ctio n 3 .2  
Un m o u n tin g th e Ca m e ra Ba ck  
1. Slide the dust cover all the way down to protect the scan area.  
2. Securely grasp the camera back by its rubber grip.  
3. Pull back the focusing screen release lever on your camera to make  
room to slide the camera back away from your camera.  
4. Pull the camera back up and away from the camera.  
7
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Se ctio n 4  
Ca re a n d Cle a n in g  
Your PhotoPhase camera back is a sensitive and high precision instru-  
ment. To keep it working properly, treat it carefully as you would any of  
your other high quality photography equipment, and take special note of  
the advice given here.  
Se ctio n 4 .1  
Sto ra g e a n d Ha n d lin g  
• Keep the camera back away from sources of moisture. Do not let liq-  
uid get in or on the unit.  
• Do not touch the CCD sensor or any of the other internal elements.  
Always store your camera back with the dust cover slid all the way  
down over the scan area, so that the CCD sensor and other internal  
components are protected from dirt and damage.  
Avoid extreme temperatures.  
• Protect the camera back from falls and collisions.  
Se ctio n 4 .2  
Cle a n in g th e ca m e ra b a ck ca se  
1. Disconnect the unit from power.  
2. Be sure the dust cover is closed.  
3. Lightly wipe the case with a clean, soft cloth, dampened with water.  
Do not allow moisture to get in any of the openings on the back  
panel or in the connectors.  
Se ctio n 4 .3  
Cle a n in g th e CCD Se n so r  
You must never touch the CCD sensor with your fingers, nor allow the  
surface to become dirty, scratched, or damaged in any way.  
8
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
However, if you notice that your images contain cyan, magenta, or yel-  
low lines in the direction parallel with the scan movement, then your  
CCD sensor may be in need of cleaning. In this case, use the following  
procedure:  
1. With your system fully assembled and with the software running,  
select the Camera Maintenance Cleaning Position menu.  
2. With an aerosol containing compressed air, spray the CCD sensor  
surface to remove any abrasive dust. Do not use a high pressure com-  
pressed air source. This is likely to damage the CCD beyond repair.  
3. Lightly moisten a clean piece of standard lens cleaning paper with  
some isopropyl alcohol.  
4. Rub the CCD sensor surface with the moistened lens cleaning paper.  
Be careful not to get any alcohol anywhere else inside the camera  
back. After the alcohol evaporates, inspect the CCD for dust. Repeat  
if necessary.  
5. Use one pump of PhotoPhase anti-static spray (included with your  
camera back) to lightly moisten a new, clean piece of lens paper.  
Never spray the fluid directly into your camera back.  
6. Gently rub the CCD sensor surface with the moistened lens cleaning  
paper. The purpose of this step is to apply a very light coating to pre-  
vent static electricity from building up on the CCD surface. Do not  
apply too much of the anti-static solution.  
7. When you have finished cleaning the CCD, click on the Its Clean  
button to return the CCD to its parked position.  
8. Always store your camera back with the dust cover slid all the way  
down over the scan area, so that the CCD sensor and other internal  
components are protected from dirt and damage.  
9
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PhotoPha se Digita l Ca mera Ba ck for La rge Forma t Ca mera s – User' s Guide  
Se ctio n 5  
Ca m e ra Ba ck Sp e cifica tio n s  
Fits  
Standard spring-back for all 4"x5" large format cameras  
Exposed Frame  
7 x 10 cm (2.76" x 4")  
5000 x 7200 pixels  
Maximum Print Size at 150 lpi  
85 x 121 cm (33" x 48")  
Maximum Print Size at 300 lpi  
42 x 61 cm (17" x 23")  
Accuracy  
12 bits per color  
Max File Size  
103 MB  
Equivalent ASA Rating  
Equivalent ASA of over 800 (including the required infrared filter)  
Data Transfer Rate  
Approximately 30 MB per Minute  
Data Interface  
Connects to the computer via standard SCSI cable  
Output  
24 bits RGB TIFF 6.0  
10  
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