Photographic Injury Evidence in NSW Criminal Cases

How Police Rely on Injury Photographs

Photographs of injuries are routinely taken in assault and domestic violence matters. NSW Police photograph complainants at the scene, at police stations, or arrange hospital documentation. Prosecutors rely on injury photographs to:

• Prove that injury occurred (existence)
• Support accounts of the mechanism of injury
• Demonstrate severity for sentencing purposes
• Corroborate complainant testimony

However, photographs alone have significant evidentiary limitations that defence practitioners must understand and address.

The Existence-Causation Gap

Injury photographs prove one thing reliably: that an injury existed at the time of photography. They do not, by themselves, prove:

The prosecution must still prove, through other evidence, that the defendant caused the photographed injury through the alleged conduct. A photograph showing a bruise does not prove the defendant struck the complainant—it proves only that the complainant had a bruise.

Common Issues with Injury Photographs

Pre-Existing Injuries

Photographs taken after an alleged assault may capture injuries unrelated to the charged conduct. Complainants may have pre-existing marks, bruises from other causes, or medical conditions affecting skin appearance. Without baseline comparison, attribution is uncertain.

Self-Inflicted Injuries

In contested matters, defence may raise the possibility that injuries were self-inflicted. Photographs cannot distinguish between injuries caused by another person and those caused by the injured person themselves.

Accidental Causation

Even where the defendant's actions caused contact, the resulting injury may have been accidental rather than intentional. Photographs do not capture the circumstances in which contact occurred.

Photograph Timing

The timing of photographs relative to the alleged offence affects interpretation:

• Immediate photographs may not show bruising that develops over hours
• Delayed photographs may show bruising from subsequent events
• Healing progression affects appearance over days

Photography Conditions

Lighting, angle, and camera settings affect how injuries appear. Poor lighting may obscure marks; flash photography may alter colour presentation; certain angles may exaggerate or minimise apparent severity.

Intersection with Medical Evidence

Where injury photographs are supplemented by medical evidence, courts may receive:

Medical Certificates and Reports

Medical practitioners may document injuries and provide opinions on causation. However, medical opinions on causation are limited to mechanism (consistent with blunt force trauma) rather than attribution (caused by the defendant).

Expert Evidence

In serious matters, forensic medical experts may provide opinions on injury age, mechanism, and consistency with alleged events. Expert evidence is subject to the admissibility requirements in Part 3.3 of the Evidence Act.

Hospital Records

Emergency department records often contain the history provided by the patient. This history may differ from later police statements, creating potential inconsistency evidence. Records may also note the patient's presentation and demeanour.

How Courts Assess Injury Photographs

NSW courts approach injury photographs as one component of the evidence, not determinative proof. Judicial reasoning typically addresses:

• Whether the photographs establish injury existence (generally accepted)
• Whether other evidence establishes causation and attribution
• Whether the photographs are consistent with the alleged conduct
• Whether alternative explanations are available

Courts recognise that photographs require interpretation in light of the whole evidence. Photographs alone rarely prove an assault offence—the prosecution must still prove the defendant's conduct through eyewitness evidence, admissions, or circumstantial proof.

Defence Approaches to Injury Photographs

CORE Defence Lawyers approaches injury photograph evidence through the following framework:

1. Examine the Existence-Causation Gap

Identify what the photographs prove (existence) and what must be proved through other evidence (causation, attribution). Challenge the prosecution to establish these links.

2. Investigate Alternative Explanations

Consider whether injuries may be pre-existing, accidentally caused, self-inflicted, or caused by third parties. Develop evidence supporting alternative explanations where available.

3. Scrutinise Timing and Conditions

Examine when photographs were taken, by whom, and under what conditions. Identify factors that may affect interpretation.

4. Cross-Examine on Mechanism

If the complainant gives evidence about how injuries were caused, cross-examine on consistency between the alleged mechanism and the photographed injury.

5. Address in Submissions

Make clear submissions distinguishing between proving injury existence and proving the prosecution case. Emphasise that photographs do not prove who caused the injury or how it was caused.