Replacement with commercially available rechargeable batteries with a higher capacity.

Measuring devices for irradiance and illuminance used in non-destructive testing must be recalibrated regularly.

Our new compendium answers all questions about UV measurement technology. Learn more about UV radiation, its generation and the various areas of application.

TLCI a new assesment for color rendering of stadion, studio and stage lighting.

The mercury oxide batteries V625PX or PX13 contain the dangerous substance mercury and therefore may no longer be sold. What alternatives are there for this battery?

Plants perceive light differently than humans. We would like to give you a brief overview, which values are relevant to the assessment of horticulture lighting and how they can be measured.

One of the most important characteristics of a luxmeter is matching to the sensitivity of the human eye V(λ). V(λ) is the spectral luminous efficiency of the human eye in daylight.

The GOSSEN company has been producing a variety of exposure meters and light meters since 1933. For collectors, the English website www.myphotoweb.com by Ed van der Aa is a veritable treasure trove of the history of GOSSEN and information on the historic equipment.

Congratulations, you’ve taken a step in the right direction and purchased a precision meter that will help you to perfect the exposure of your shots and eliminate the need for a lot of waste and time to finish your images. If the light meter does not initially provide the values you expect, we recommend that you read this entry and perform the calibration described below.

Our new compendium answers questions covering all aspects of issues associated with handheld exposure meters in digital photography. Find out more about the functions included with exposure meters and how to use them, as well as the characteristics of light, white balancing and much more.

Our photometry compendium answers questions covering all aspects of the issues of light, basic lighting technology and colorimetry terminology, tips for the selection of measuring equipment and an overview of applications and standards.

A correspondingly upgraded DSLR and accurate exposure metering are essential constituents for professional filming. Read more about this issue in the technical article from “digit!” magazine.

Don Quixote, alias Alexander Heinrichs, battling the heathens – or why is an exposure meter important and sensible for photography. Watch this video on how to work with exposure meters!

The right combination of ISO value, shutter speed and f-stop results in a correctly exposed image. In short – the ideal exposure value has to be determined. Read more about this issue in an excerpt from the book “Fotografie al dente” published by Franzis Verlag.

Manual and automatic exposure metering systems integrated into the camera have long since been standard equipment – for professional cameras too and especially for dynamic subjects.

Read an excerpt from the June 2015 edition of trade journal Gebäudedigital here, and find out more about required safety and health protection with regard to workplace lighting.

Read an excerpt from the June 2015 edition of trade journal Gebäudedigital here, and find out more about standards and regulations for workplace lighting.

A Boxer, an Orchestra and a Golden Chain. Read more about this story in the article published by photography magazine “camera”.

Exposure metering in the studio with flash can’t be executed automatically by the camera because the light source is only active at the moment the image is recorded. Read more about this issue in an excerpt from a book published by Rheinwerk Verlag.

Above all, exposing a photo involves influencing two quantities: f-stop and shutter speed. Read more about this issue in an excerpt from a book published by Rheinwerk Verlag.

When a subject is illuminated with flash, the respective flash power of the individual light sources has to be adjusted to your camera’s exposure parameters. Read more on this issue in excerpts from a book published by Rheinwerk Verlag.

The use of an exposure meter pays off in order to be able to keep the lighting situation under control at a photo shoot. It makes it possible to precisely determine the amount of light at every place within the image.

The video fully explains the mode of operation and function of GOSSEN’s exposure meters for use in contemporary digital photography.

TM-30-15 is a new IES standard for evaluating the color rendering of light sources and uses 99 reference colors distributed over the entire color space.