Hasselblad H4D200MS  CLEANING the Sensor Filter,  TETHERED to a Computer with Phocus Running

 CLEANING THE SENSOR FILTER

If you see dark or colored spots or lines in your images, then you may need to clean the outer surface of the sensor unit’s infrared (IR) filter. In most cases, the careful use of compressed air will be adequate though if you use canned compressed air, read the ­instructions very carefully before use to avoid spraying impurities or even ice on the filter! Sometimes, however, small particles will get stuck to the surface of the IR filter, requiring for a more thorough cleaning, involving either fluid or wipes.

1.If compressed air did not remove all the problems on the filter, then use an E-wipe.

2.Tear at the notch to break seal. Remove E-wipe from its packaging and fold the tissue to match the width of the IR filter.

3.Apply firm pressure using two or three fingers at the edge of the wipe to ensure an even, firm contact with filter surface. Wipe the surface in one unbroken motion.

4.Finally check if the IR filter has been properly cleaned either by visual inspec- tion or by mounting the sensor unit to the camera and making a test capture. If further cleaning is needed, repeat cleaning procedure.

N o t e

Do not use same side of the e- wipe twice as you will be likely to reapply­ any particles re- moved in the first pass.

N o t e

If you still see spots on your shots after you have cleaned the outside of the infrared filter, then you may have dust either on the inside of the IR filter or on the sensor itself. However, never attempt to remove the glass filter – you will probably ruin the sensor if you do so!

If dust manages to get between the IR filter and sensor, it can only be removed at the Has- selblad factory. Contact your Hasselblad dealer or Hasselblad Service Center for assistance.

 TETHERED TO A COMPUTER WITH
PHOCUS RUNNING
When tethered to a computer, you can control many camera functions using Pho-
cus software. All captures are saved as 3F files (as opposed to 3FR files from a CF
card) and can be immediately exported to other formats if desired.
 CONNECTING TO A COMPUTER
To connect to a computer, attach a FireWire cable from the FireWire port on a com-
puter to the port on the side of the sensor unit. The port is protected behind a
hinged cover.
When you are connected to a computer, the following applies:
• The destination medium and location are controlled from Phocus.
• All exposure settings, including ISO, aperture and exposure time, are controlled
from Phocus if you choose to expose from Phocus. In addition extra tools such
as Live Video, remote focus control etc are available. See Phocus user manual
for full description.
• The sensor unit will take power from the FireWire cable if it is available (not all	‘Camera’ tool in Phocus.
computers can supply power, notably PC laptops). This will help conserve the
battery power. However, you must still have a charged battery connected as
the camera body needs it in order to operate.
When initiating a shot from Phocus, the computer sends a signal to the sensor
unit, which triggers the shutter (and strobe/flash, if any). The back then sends the
capture over the FireWire connection to the computer, where it is displayed on the
computer screen and saved as a 16-bit 3F file in the currently selected folder on the
computer hard disk.
When tethered, each capture also appears as ‘Host’ on the sensor unit display.
Please note that the buttons on the unit have no function in this mode.

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