How To Calculate Guide Number | Photography tips and tricks, Equipment, Photography News, Photography Books, Tutorial, and Lighting

Understanding GN Value and how it’s Calculated

Posted by oneslidephotogaraphy On November - 1 - 2018

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 calculate guide number at OneSlidePhotography.com

Beginner’s Guide to Photography : Controlling Depth of Field

Depth of field refers to the range of distance that appears acceptably sharp. It varies depending on camera type, aperture and focusing distance, although print size and viewing distance can also influence our perception of depth of field.The depth of field does not abruptly change from sharp to unsharp, but instead occurs as a gradual […]

“Lux Nikon Kit”, The 24K Gold Plated Nikon Df Camera

BRIKK is known for its unlimited and excessive creativity which can goes beyond everyone’s expectation. They always make a collaboration that make people amazed and in awe such as by plating the Apple logo with diamond and gold on iPhone 6. This time, BRIKK is in collaboration with Nikon to plate one of its camera […]

6 Tips to Efficiently Put Together your Photography Portfolio

Maybe when you’re planning on applying for a job or received an offer for a certain project, you’ll be asked to send in your personal portfolio of your recent works. And maybe you’re confused as to what would go in such a compilation. Well, to make it a little bit clearer, a portfolio is basically […]

These Lenses were destroyed by an Angry Girlfriend

So my previous article talks about all the things that can have a damaging effect to your camera. Among others, these are dust, seawater, and humid air. But besides all of that, do you know what entity can cause a much greater, no-mercy damage to camera? That wrathful entity would be an angry girlfriend. This […]

Photoshop tips: Selective Color Photography

Selective color photography is a photography technique where the resulting photos will have a few prominent colors against a black and white background. The following is tips and tricks to achieving a selective color photograph using adobe photoshop. These steps are simple, and can be done by even the most novices in digital editing. 1. […]

Advance Tips and Tricks For Taking Photos Of Fireworks

Capturing fireworks is fun, capturing fireworks pictures are an example of beauty and excitement happening at the same time, but also a rather difficult moment to capture on camera correctly. Oftentimes the photographer is left with pictures of white streaks outlining a very black sky. The following are some tips that will help anyone photograph […]

Tips and Tricks: Birding Photography for Beginner

Here are a few tips and tricks for birding photography enthusiasts, whether it be for photographing pets or wild birds. 1. What you’ll need: – 300mm or 400mm telephoto lens – Teleconverters. – Monopod or Tripod – Camoflauge clothing; such as jacket, pants, and hats. – Beanbag – Camera Bag – Mosquito-repellent lotion.