Some productions test your ability to control every element of an image. Observational documentaries test your ability to make strong visual decisions when you control almost nothing.
Working as DOP on The Secret Life of the Zoo at Chester Zoo was exactly that kind of experience. Produced by Blast Films for Channel 4, the series took viewers beyond the public areas of the zoo to reveal the behaviour of the animals and the relationships they formed with their keepers. Channel 4 described the production as using a range of filming techniques to capture animal behaviour in intimate detail.
My work on the series was filmed in HD using the Sony FS7. It ranged from following stories as they naturally developed around the zoo to using a macro lens to reveal an almost otherworldly level of detail in one of its smallest inhabitants: a grasshopper.
You can also view my original The Secret Life of the Zoo project credit in my portfolio.
The challenge of observational documentary filming
Observational documentary cinematography is built around real moments. Unlike a commercial or controlled interview, an animal will not wait for the camera, repeat an action or move into better light on request. The DOP has to remain alert to behaviour, anticipate what might happen next and be ready to respond immediately.
That creates a particular balance between speed and precision. React too slowly and the moment has gone. React without thinking and the footage may not communicate the story clearly.
Even while following unpredictable action, the camera operator must still consider composition, focus, movement, screen direction and how each shot will work within the edit.
The most useful skill is often anticipation. Small changes in behaviour can suggest that something is about to happen, and recognising those clues gives the camera team the best chance of being in the right position with the right lens before the action begins.
Finding the story without disturbing it
Filming at Chester Zoo also meant working sensitively inside a large, active visitor attraction. Camera positions had to serve the story while respecting the environment, the work of the keepers and the needs of the animals.
Good factual television camera work should help viewers feel close to what is happening without the filmmaking becoming a distraction. That means knowing when to move, when to hold a frame and when the strongest decision is simply to stay patient.
The visual style also needs to remain consistent while circumstances change. Locations, backgrounds and light levels can vary throughout a filming day, but the finished programme still needs to feel coherent.
Careful exposure, considered lens choices and an awareness of continuity all contribute to footage that can be cut together naturally.
Capturing a grasshopper with a macro lens
One of the most memorable shots from the production involved filming a grasshopper with a macro lens. Seen at that scale, its features and textures appeared almost otherworldly, revealing detail that the human eye would not normally experience in the same way.
Macro cinematography brings a very different set of technical challenges. At close focusing distances, depth of field becomes extremely shallow. A movement of only a few millimetres from the animal or the camera can take the most important detail out of focus.
Maintaining focus therefore becomes a combination of accuracy, patience and anticipation. You need to watch the subject closely, understand its movement and make small, controlled adjustments rather than overcorrecting.
Camera stability is equally important because tiny vibrations become much more noticeable at high magnification.
The technical challenge is part of what makes macro filming so rewarding. It allows a familiar subject to be shown from an unfamiliar perspective and gives the audience access to a miniature world that can feel cinematic in its own right.
Shooting factual television on the Sony FS7
My work on The Secret Life of the Zoo was captured in HD on the Sony FS7. It was a practical camera for this style of factual television production, combining professional recording options with an ergonomic design suited to mobile, observational filming.
On a production where stories can unfold without warning, the camera needs to be ready to work quickly and reliably. The equipment should support the operator rather than slow down the response to what is happening.
A well-configured documentary camera package makes it possible to move between longer-lens observation, closer coverage and more specialist shots while maintaining consistent results.
This is also why preparation matters. Batteries, media, lenses and camera support all need to be organised so that a change can be made efficiently.
The behind-the-scenes photograph of the fully loaded trolley may be less glamorous than the finished footage, but it represents an essential part of factual television production: having the right equipment accessible when a story changes direction.
Patience, instinct and timing
Working as a DOP on an observational series is as much about temperament as technical knowledge. There can be long periods of waiting followed by a few seconds in which everything happens.
Staying concentrated throughout is vital because the most revealing moment may also be the least predictable.
The experience reinforced several principles that continue to shape my documentary work:
- Story comes before spectacle. A beautiful image is most valuable when it helps the audience understand the subject.
- Patience creates opportunities. Holding a position can be more effective than constantly searching for a new angle.
- Preparation enables spontaneity. An organised camera package makes it easier to react quickly when circumstances change.
- Specialist techniques need a purpose. The macro photography worked because it revealed something meaningful about the grasshopper, not simply because it looked unusual.
- The camera should feel unobtrusive. The strongest observational footage allows the audience to concentrate on the unfolding behaviour rather than the filmmaking process.
Documentary DOP and camera operator across the UK
The skills required on The Secret Life of the Zoo extend well beyond wildlife filming.
Anticipating unscripted action, working sensitively with contributors, adapting to changing locations and maintaining a consistent visual approach are equally important across factual television, documentaries and branded films.
You can see more of my broadcast and documentary work in my factual showreel, learn more about my work as a UK Director of Photography or explore my camera operator services.
I work across Newcastle, Manchester, London, Glasgow and throughout the UK. If you are producing a factual television series, documentary or contributor-led film and need an experienced DOP or camera operator, contact me to discuss the production.
Frequently asked questions
Where was The Secret Life of the Zoo filmed?
The Channel 4 observational documentary series was filmed at Chester Zoo in the North West of England.
What was James Melrose’s role on The Secret Life of the Zoo?
James Melrose worked as Director of Photography on the series for Blast Films and Channel 4.
Which camera was used?
James’s work on the production was filmed in HD using the Sony FS7, a camera well suited to mobile factual television and documentary filming.
Why is macro filming challenging?
At close focusing distances, a macro lens produces an extremely shallow depth of field. Even a very small movement from the subject or camera can shift the critical detail out of focus, requiring careful camera control, precise focusing and patience.
