Laboratories are full of things that need photographing: specimens, samples in dishes and tubes, slides under microscopes, instrument readouts, equipment and experimental setups. Lab photography combines the precision of scientific documentation with special lighting challenges, such as transparent containers and tiny structures, and strict rules about safety, contamination and confidentiality. This lesson introduces the main techniques and responsibilities of photographing in laboratory settings.
What is laboratory photography?
Laboratory photography records specimens, samples, experimental results, instruments and setups for research, teaching, quality control and publication. It follows the documentation and integrity principles in scientific and technical documentation and the reproducibility methods in reproducible photographic conditions.
Lighting transparent and translucent samples
Many lab subjects are in glass or plastic: petri dishes, tubes, flasks, gels and thin specimens. Reflections and transparency make them difficult to light from the front. Common approaches build on bright-field and dark-field lighting from lighting products and still life:
| Method | How | Reveals |
|---|---|---|
| Transmitted light (transillumination) | Light passes through the sample from below or behind, often from a light panel | Colonies, clear structures, colored liquids, gels |
| Dark-field | Light from the sides against a dark background | Edges, fine particles and textures glow |
| Diffuse reflected light | Large soft sources from above or the sides | Surface color and texture of opaque samples |
| Cross-polarized light | Polarizers on light and lens at right angles | Removes glare from wet or glossy samples |
Tip:Remove lids from dishes when it is safe and permitted, or angle lights to keep reflections off the important areas. Condensation inside lids hides details.
Photography through microscopes
Photomicrography, defined in close-up versus macro photography, records images through a microscope. Many microscopes have dedicated camera ports and scientific cameras; general cameras can also be attached with adapters. Key points:
- Use the microscope's camera port and correct adapter to avoid vignetting and misalignment.
- Set even illumination following the microscope's procedures.
- Record the objective and magnification for every image, so scale bars can be added correctly, as in measurement, scale and reference information.
- Avoid vibration: use remote release or electronic shutter.
- Keep settings consistent between images that will be compared.
Some instruments, such as gel imagers and specialist microscopes, have their own calibrated capture systems. Use them according to laboratory procedures rather than replacing them with a general camera.
Instruments, screens and setups
- Equipment and setups: photograph overviews and labelled details, as for any technical subject.
- Screens and displays: photographing a screen can show moire patterns and banding, as in lens and sensor interactions; a direct screenshot or data export is usually better when available.
- Readouts and labels: ensure they are sharp and legible, perpendicular to the camera.
Safety, contamination and confidentiality
| Area | Practice |
|---|---|
| Personal safety | Follow lab rules, wear required protective equipment, never bring food or drink, know hazards |
| Contamination | Do not open sterile samples without authorization; clean or cover equipment; follow hygiene procedures |
| Sensitive samples | Some samples are light- or heat-sensitive; avoid unnecessary light exposure or flash |
| Confidentiality | Research data, patient information and unpublished results may be confidential; get permission before photographing or sharing |
| Ethics approvals | Images of human subjects or patient materials may require consent and approval |
Warning:Always work under the guidance of laboratory staff and follow their safety and data procedures. Laboratory hazards can be serious.
Common mistakes
- Front-lighting glass dishes: reflections hide samples.
- Not recording magnification: scale cannot be added later.
- Photographing screens instead of exporting data: moire and poor quality.
- Ignoring lab rules: safety risks and contamination.
How professionals work in labs
Scientific photographers and researchers who image their own work follow lab protocols, choose lighting suited to each sample type, use calibrated instruments, record every setting and keep raw data safe. They collaborate closely with scientists to show exactly what matters, and they treat confidentiality and safety as seriously as image quality.
Practical examples
Bacterial colonies in a dish
- Situation
- Top lighting creates reflections that hide colonies.
- What to do
- With permission, you place the dish on a diffused light panel and add gentle side light against a dark surround.
- Why it works
- Transmitted light shows colonies through the agar; side light adds edge definition.
- Result
- Clear, countable colonies without glare.
Cells under a microscope
- Situation
- A researcher needs images for a paper with accurate scale bars.
- What to do
- You use the microscope's camera port, keep settings consistent and record the objective magnification for each image.
- Why it works
- Recorded magnification allows correct scale bars, and consistent settings allow comparison.
- Result
- Publication-ready images with accurate scale.
Key points
- Lab photography records specimens, samples, instruments and setups accurately.
- Use transmitted light, dark-field, diffuse light or cross-polarization for different samples.
- Through microscopes, use proper ports and adapters and record magnification.
- Export screen data directly when possible; keep readouts legible.
- Follow safety, contamination, confidentiality and ethics rules at all times.
Frequently asked questions
How do I photograph petri dishes without reflections?
Can I attach my camera to a microscope?
Should I photograph computer screens in a lab?
What should I consider about confidentiality in labs?
Conclusion
Laboratory photography requires lighting suited to transparent and tiny subjects, careful microscope work, legible records of instruments, and strict respect for safety, contamination and confidentiality rules. Next, you will learn how to add measurement, scale and reference information to images.
Finished reading? Track your progress through Macro and technical.