GN Value | Photography tips and tricks, Equipment, Photography News, Photography Books, Tutorial, and Lighting

Understanding GN Value and how it’s Calculated

Posted by oneslidephotogaraphy On October - 10 - 2020

How to calculate GN value

GN, short for Guide Number, Is the amount of power the light transmitted by a flash device is. It’s the result from multiplying distance (in meter or feet) and aperture.

The power of the flash is measured with the GN which describes the flash’s capacity in illuminating objects within a certain distance (in meters). Modern flashes supports TLL technology that allows it to set its power according to the distance the object is to the camera, so the risk of it being too bright or too dark can be eliminated. Read the rest of this entry »

Beginner's Guide to Photography, Photography Equipment

Related Photography Ideas for GN value at OneSlidePhotography.com

List of Error Message Canon EOS DSLR

Here are list of error messages from Canon EOS DSLR Err 01 : Communications between the camera and lens is faulty. Clean the lens contacts. -Clean the electrical contacts on the camera and lens.

RAW vs JPEG, which one is better?

RAW and JPG refer to the two different file types your camera can produce. RAW – A RAW file is the unedited (unprocessed) image data that you digital SLR camera captures every time you take a photo. Because RAW files are unprocessed, they come out looking flat and dark. RAW images need to be viewed […]

Nikkor 105mm f/1.8Ais on DSLR

Nikkor 105mm f/1.8, manual lens with 9 aperture blades … and the closest focusing distance is 42 in… with a smooth and wonderful bokeh Nikon mounted to the DSLR body (EOS 1000d)? yup … why not using a lens adapter of course ..

Street Photography Tips for Dummies

Candid street photography, or candid portraits, can be some of the most interesting photos captured in everyday places. Heading out into the crowd with a camera is exhilarating and intimidating at the same time. Great photographic scenes play out on the streets right before your very eyes, but people are quick to recognize the camera […]

In Photography, Breaking the Rules is the New Rule!

Back then, when the first time I knew and learnt photography like most of you did, you might diligently look for tips and tricks related to it about things to do and things not to do when you shoot (rules of photography). The most basic and the most common rule of photography which is constantly […]

Tips and Tricks on Capturing the Shots of Cityscapes

Cityscapes or city sceneries are one of the most interesting objects of photography. With a correct method, we can present the beautiful urban development with a stunning view on an image. Not only the good side of it, but some photographers are capable of taking snaps of the traffic and the city under flood and […]

9 Common Mistakes in Landscape Photography

A good landscape photograph is an image that can translate every impression that we see in the real life. Only by seeing a picture, a viewer is expected to feel the ambience like the warm or the cold temperature and also the wind inside a beautiful visual work. Every single piece of landscape photography should […]