Pinhole Camera Exposure Times: How Long Does It Take To Capture A Photo With A Pinhole Camera?

Capturing a photo with a pinhole camera can be an exciting and creative way to expand your photography skills. Pinhole cameras are simple to use and can deliver stunning photos when used correctly. However, it is important to know how long you must expose your shot before setting out to capture pinhole photos, otherwise you may be disappointed with the result! So, how long does it take to capture a pinhole photo?

Depending on the amount of light in the scene you are capturing, pinhole photo exposure times can range anywhere from a few seconds to several hours. As a rough guide, below are some typical exposure times depending on weather conditions:

• Sunny - 15 to 20 seconds

• Overcast - 60 seconds

• Cloudy - two minutes

• Indoors - 30 to 60 minutes

• Nighttime - Multiple hours

Keep reading to learn more about pinhole camera exposure times and best practices to ensure you capture stunning photos every time.

How Long Does Pinhole Photography Take?

In short, it depends! As a general rule of thumb, the above timeframes may be used as a starting point, however there are a number of factors that influence the amount of time you must expose a pinhole photo to achieve the desired results. For example, to conduct the photographic technique ‘solargraphy’, pinhole cameras can be left capturing their images for many months and even years.

Typically, pinhole photography will take a matter of seconds or minutes to capture the optimal amount of light.

Do Different Photographic Materials Require Different Exposure Times?

Another factor that influences the exposure time for a pinhole camera is the type of photographic material being used. Below are two of the most common materials used for pinhole photography and how each one’s exposure times vary.

Film

Camera film is highly sensitive and so requires much shorter exposure times than other photographic materials.

Photographic Paper

Compared to camera film, photographic paper is far less sensitive and so requires longer exposure times.

What Are Some Tips For Accurately Metering The Light When Preparing For A Pinhole Shot?

While the exposure times above may be used as a rough guide to help reduce the likelihood of an over-exposed shot, they are by no means an accurate measurement. To accurately measure the conditions, we would typically recommend using a light meter.

Using a light meter will allow you to accurately gauge the amount of light present in the environment to help you determine the best possible amount of time to expose your shot for. The light meter will act as a pinhole camera exposure calculator to provide you with the optimal exposure times for every scene you want to capture.

Expert recommendation: Use Light Meter by WBPhoto for accurate light metering - Light Meter by WBPhoto 

What Size Pinhole Is Best?

If you are making your own pinhole camera — which can be a fun activity — it is important to know the effect that the size of the pinhole will have on the captured photo. For centuries, photographers have experimented with different size pinholes, and a range of 0.2-1.0mm is agreed as the ideal size pinhole. There is also an equation to calculate the optimal size pinhole, calculated as follows:

d = c × √(f × λ)

• d= the optimal diameter for pinhole

• c= constant

• f= focal length (distance between pinhole and film) 

• λ = the wavelength of light the pinhole should be optimised for

In Summary:

• Pinhole camera exposure times vary from a few seconds to several hours, depending on the available light.

• Typical exposure times range from 30 seconds to a minute on a sunny day to multiple hours at night, with indoor shots taking 10 minutes to an hour in good lighting.

• Photographic materials influence exposure: film requires much shorter times than photographic paper due to greater sensitivity.

• Accurate light metering, often done with a light meter, is recommended over rough guides to ensure optimal exposure.

Begin Your Pinhole Camera Journey with a Pinsta Camera

Capture stunning pinhole photos with your own Pinsta camera! Our cameras are handcrafted, built to deliver exceptional captures every time. Browse our range of superb cameras online today, or get in touch to learn more from one of our friendly team.

Pinhole Camera Exposure Times FAQs

How Does the Film or Paper's ISO/ASA Rating Affect How Long the Exposure Needs To Be?

ISO and ASA are both acronyms that relate to how sensitive either the film you use or your camera is to light. For example, if you are using film with an ASA (American Standards Association) rating of 200, this film is more sensitive and requires a shorter exposure time than film with an ASA rating of 100. ISO (International Organisation for Standardisation) defines how sensitive your camera is to light, and so a lower ISO rating requires greater exposure times. 

How Does the Distance Between Pinhole and Film/Paper (Focal Length) Impact the Necessary Exposure Time?

Increasing the focal length (distance between pinhole and film) in a pinhole camera lengthens the exposure time because the light spreads out over a larger area on the film, reducing intensity, while also creating a narrower, telephoto-like view; conversely, a shorter focal length means less light spread, thus shorter exposures and a wider angle.