AFAIK digital cameras are not used in police work because the photographs can be easily manipulated. You can see that even in the CSI series.
In the Leonor Cipriano trial normally the photo taken of her with her injuries would not have been accepted as evidence because it was taken with a digital cameral, why it was accepted is another mystery.
A quick internet search shows that digital cameras are used almost exclusively by law enforcement agencies worldwide with film being used less and less.
For example from NPIA dated 2007
PRACTICE ADVICE ON
POLICE USE OF
DIGITAL IMAGES
Snip2.2.6 CRIME SCENE PHOTOGRAPHSDigital crime scene photography at capture stage is similar to conventional film techniques except that additional metadata is captured with the image and in some cases the compressed image may be unsuitable for evidential purposes.
Crime scene photography includes any image taken at the scene, for example, capture of the scene itself using video, thereby allowing the viewer to see damage to property or non-intimate injuries to a victim.
Considerations at capture stage include:
• Ensuring equipment generates correct metadata;
• Using an appropriate file format to capture different scenes without compromising the image quality;
• Obtaining advice from specialist photography, where appropriate;
• Linking views and sequences of a crime scene.
See National Training Centre Initial Crime Scene Investigator’s Course for further information on capture in crime scene photography
http://library.college.police.uk/docs/acpo/police-use-of-digital-images-2007.pdfI'm sure that the Portuguese police will have kept up with developments to assist in their work ... the following is from Brazil but there is nothing to suggest that the crime scene photographs in Madeleine's case were not taken with a digital camera,which is highly probable in my opinion.
SnipForensic photography has evolved, using digital cameras, sophisticated printers, special papers, as well as all the technology that modern computing provides.
It is true that a short time ago there was a certain fear of using digital photos as a means of producing expert proof, due to the quality of the photos and also the authenticity of the photos, as it was feared that the photos could be altered , we now know that this is also possible in photos taken by the analogue system, but this resistance has already been overcome by the credibility and quality of the images obtained by digital means.
Knowing that the authenticity of the photos should always be preserved, many experts are keen to keep the original record of the photos obtained inside the camera or the memory card, because in this way the photos are untouchable and preserved against possible tampering.
By opting for the use of digital cameras, experts have gained in image quality, time to get the shot, (because it is no longer necessary to send the films to be revealed), and with the storage facilities provided by digital media.
In order to perform a good forensic photography the Expert must first be concerned about the type of camera that will use because the choice of the appropriate equipment will be fundamental to the success of obtaining proof.
http://www.ambito-juridico.com.br/site/index.php?n_link=revista_artigos_leitura&artigo_id=4000