10 Best Photographic Light Meters 2025 in the United States

The Extech SDL470 UVA/UVC Light Meter Datalogger is a digital light meter designed to measure a wide range of light intensities up to 10,000 Foot-candles or 100,000 Lux. This makes it suitable for various lighting conditions in photography. A notable feature is its adjustable data sampling rate, which allows users to customize how often measurements are taken. Additionally, it can store up to 99 readings manually and an impressive 20 million readings via a 2G SD card in Excel format, making data management straightforward and efficient for extensive logging needs.

The large backlit LCD display is clear and user-friendly, enhancing readability even in low-light environments. The product also includes useful functions like MIN, MAX, Data Hold, and Auto Power Off, which are helpful for capturing and retaining important measurements over time. Weighing 16.2 ounces and with dimensions of 3.2 x 2 x 7.4 inches, this light meter is relatively portable, although some users might consider it slightly bulky for on-the-go use. The inclusion of a tilt stand, sensors, case, and necessary batteries adds to its convenience.

However, it lacks specific flash metering capabilities, which might be a drawback for photographers who frequently work with flash lighting. The device is battery-powered and includes 6 AA batteries, which is convenient but may require frequent replacements depending on usage. The Extech SDL470 is a robust and versatile tool, particularly suited for users needing extensive light measurement and data logging capabilities in a variety of settings, though it may not be ideal for all photographers due to its size and lack of flash metering.

The Extech SDL400 Light Meter SD Logger is a digital light meter designed for those needing precise and versatile light measurement capabilities. One of its major strengths is its wide measuring range, capable of handling up to 10,000Fc or 100kLux, making it suitable for various lighting conditions. The precision silicon photo diode and spectral response filter ensure accurate measurements, and the device is designed to correct for cosine and color, which can improve the reliability of readings in diverse environments.

The SDL400 also includes a datalogger feature that logs and timestamps readings on an SD card in Excel format, making it easy to transfer and analyze data on a PC. This is particularly beneficial for users who need to keep detailed records over time or perform in-depth analysis later on. Additionally, the offset adjustment feature allows zero function calibration for relative measurements, enhancing its functionality for precise tasks.

The device requires 6 AA batteries, which are included, but the reliance on batteries means users need to be prepared with spares, especially during extended use. The size (7.2 x 2.9 x 1.9 inches) and weight (1.01 pounds) are reasonable for portability, but some might find it less compact compared to smaller models. This product is particularly useful for professionals in fields like photography, cinematography, and industrial lighting, where precise light measurement and data logging are crucial.

The Extech UV505 Pocket UV-AB Light Meter is a digital device designed for measuring UV-AB light sources. It features a sensor with a wavelength range of 290 to 390nm and can measure up to 40.00 mW/cm2, which makes it suitable for a wide range of applications that require precise UV light measurements, such as laboratory and industrial settings. The backlit LCD display ensures easy reading in various lighting conditions, and the zero function allows for quick resetting of the meter. Additionally, the data hold feature lets you freeze the current reading, which can be useful for recording and analyzing results later.

The device is compact and portable, with dimensions of 1.9 x 1 x 5.2 inches and a lightweight build of 3.2 ounces, making it convenient to carry around in its included pouch. It runs on two AAA batteries, which are provided, so you can use it straight out of the box. It is worth noting that the meter is best suited for those who specifically need to measure UV-AB light, and it may not be as versatile for other types of light measurements. The Extech UV505 ranks #130 in Lab Photometers & Light Meters, indicating it is a reliable choice within its niche.

This light meter is a great tool for professionals needing accurate UV-AB light measurements. However, if you're looking for a more versatile light meter, you might want to explore other options.