Figure 1: Rollei d7 metric SLR camera with a 5 M -pixel 
sensor 
1.2 High-resolution sensor 
A high-resolution sensor of 5.07 M-pixel has replaced the 
former sensor type. The resolution is today 2560 px : 
1920 px. The pixel size is 3.4 microns; size of the CCD 
array is diagonal 11 mm. It is a type 2/3" chip. The 
sensor provides excellent basic characteristics, such as 
saturation signal level, sensitivity and smear. The device 
provides an 8x speed readout mode output that allows 30 
frames per second readout for image verification with an 
LCD finder, auto focus control and auto-exposure 
control. Also a 2x speed mode that provides a double 
frame rate 1.25-million pixel mode is new for this kind of 
sensors. The readout modes include: Progressive scan 
output mode that allows high-speed shutter operation, 
additive mode that provides high sensitivity and a wide 
dynamic range. The chip achieves photographic quality 
to support imaging objects under a wide range of 
conditions. 
1.3 RDC raw data format 
Saving image data to storage media is done in a 
company's own developed format. This format is named 
RDC and stores all the image data without any loss of 
information as the sensor records it. The format has a 4k 
header, which is suitable for additional image 
information like camera settings during the exposure and 
calibration data, the factory settings after field 
calibration. The images are converted from the raw data 
format to formats like JPG or TIFF with the dImage 
software. Information about white balance and others are 
incoming from the above mentioned file header and are 
automatically added to the conversion process. In case of 
forensic applications the storage of the original image is 
very important for accepting digital images as a 
document of evidence. 
2. SOFTWARE FOR IMAGE 
ADMINISTRATION 
With risen claims of customers to handling, quality and 
support, the integration of a camera in a computer 
environment gets more and more important. On today's 
photo market there are different software tools and 
applications that support the administration of digital 
cameras and image data. In most cases the offered 
camera-software is a standard application that is not 
developed by the camera manufacturer. The result is a 
leak of collaboration between the camera and the offered 
software. Rollei Fototechnic delivers a software package 
developed in the companies software department, which 
controls in an excellent manner the device functions. 
The image administration tool, which is supplied with 
every camera of the Rollei d-Series, is called dImage. 
The functionality includes loading the exposures from the 
camera, creating an overview of all pictures, manipulate 
the image data and establish a remote control of the 
camera. 
  
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Figure 2: User interface and camera functions driven by 
DnetControl Software 
2.1 Image acquisition 
Rollei dIimage supports three different ways to get the 
photos from your camera into the computer. First of all 
you can take the storage medium out of the camera and 
read it out on your PC. The second way is to connect the 
camera with an SCSI-wire to a computer and let dImage 
readout the data from the camera. Another interesting 
possibility is the remote control of a digital camera. With 
an SCSI- or parallel port cable there is established a 
connection between camera computer. Afterwards you're 
able to control any functions the camera offers. There is 
no difference in the available range of functions to the 
manual operation of the camera. While using the remote 
control of dimage it is also possible to interchange any 
data with the camera and to control the camera settings 
and the chosen motif by a small thumbnail. If the camera 
is triggered off by a mouse click dimage manages to 
download the picture from the camera. The graphical 
data set is saved as a RDC-file and shown on the monitor 
ready for optimisation and image manipulation. 
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