How To Calculating GN | Photography tips and tricks, Equipment, Photography News, Photography Books, Tutorial, and Lighting

Understanding GN Value and how it’s Calculated

Posted by oneslidephotogaraphy On July - 15 - 2021

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 how to calculating GN at OneSlidePhotography.com

Difference between the P Mode and the Full Auto Mode in Digital Cameras

All digital cameras, may it be a DSLR or prosumer digital cameras, there is a dial button to camera’s modes. The dial most often encountered is that for the PSAM and Auto Full Auto Modes. But what are the different between the P and the Auto Mode? They’re very similar in that they can be […]

Tips on Selecting Photo Studio Lights

At however great of an angle a photo is taken by a photographer, however sharp the lens, or however large the pixels of the camera sensors are, a photo shoot will only be success if the lighting is perfect. And of course photo studio lights have a pivotal role in the process. The photographer who […]

Tips on photographing motorcycle or car races

Photographer: Quinn Rooney Photographing a motorcycle race isn’t easy and requires a special expertise. Split-second moments and various technical photographing conditions become hindering factors for the photographers. Here are 9 tips to better photograph a motorcycle race event. These tips can also be applied to other sports events that involve high speeds. I hope they’ll […]

This Guy Gets Kicked on The Head While Taking a Selfie

Anyone can take a selfie anytime and anywhere, yet of course you have to be careful while performing it. If you get into wrong place and time, instead of taking a good photograph of yourself, you can get injured and pain. This happened to Jared Michael when he had to restrain his pain when he […]

The Principles of Shooting Video With a DSLR

In this episode, Mark Wallace from Adorama TV will go over the principles of shooting video with a DSLR.

Rule of Third

The “Rule of Thirds” one of the first things that budding digital photographers learn about in classes on photography and rightly so as it is the basis for well balanced and interesting shots. The rule of thirds is a compositional rule of thumb in visual arts such as painting, photography and design. The rule states […]

Don’t be Sad..Here We are With Some Tips on Making Your Selfie Look More Attractive

For a teenager named Danny Bowman (19 years old), it was neither drugs nor video game that got him addicted but selfie or self-portrait photograph. It got ugly when he failed taking a perfect photo of himself and got frustrated then attempted a suicide. It was all started when Bowman posted his selfie on Facebook […]