In Photography, Breaking the Rules is the New Rule!

List of Error Message Canon EOS DSLR

Fact about DSLR Shutter Count

Basic Studio Portrait Lighting Techniques

An Introduction to Travel Photography and Photojournalism with Richard I’Anson

Adobe Photoshop Prank!

Basic FAQ for Amateur Photographers: Part 2

Easy Ways for Better Cycling Photos

The Greatest Photographers Along With Their Legendary Masterpieces

Tips to Optimizing Kit Lens On the DSLR

Understanding GN Value and how it’s Calculated

Posted by oneslidephotogaraphy On March - 9 - 2022

How to calculate GN value

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 »

.

Related Photography Ideas for GN in photography at OneSlidePhotography.com

Causes and Solutions for Vignettes on Photos

Have you ever had dark areas appearing on the edges of your photograph? If so, that’s what is called a lens vignette. Here are some causes and solutions for any vignetting that may occur in your photograph:


Interesting Facts of Selfie Stick You Need to Know

Who does not know SELFIE stick? Almost all photographers know or even have and use this photography accessory. This is a stick like monopod that can be extended or folded with a special sitting on it where you can attach your Smartphone or pocket camera. Apart from that, there are some of them that feature […]


(Photography Tips) How Were These Photos Taken?

These photos interest you? And are you curious as to how they were taken? Like what camera was used, what filters, shutter speed settings, ISO? Or maybe you’re curious as to how it was edited in photoshop and what techniques were used to get these results? I will explain to you in detail and answer […]


Basic FAQ for Amateur Photographers: Part 2

1.With a limited budget, what camera should I buy? If you’re working with a budget of under $500, buy a pocket (point-and-shoot) camera that has Manual Settings feature. This feature will help acquaint you with Speed and Aperture. Be confident in buying a pocket camera; because the price tag of the camera doesn’t accommodate best […]


Tips to Choose Cell Phone With the Best Camera

To choose a Smartphone with a good quality camera is actually not difficult only if we know exactly what to be considered. The most important thing to decide is the image sensor of the camera which is usually neglected. The bigger the image sensor is, the better the quality of the camera. Most cameras have […]


Tips in Choosing a Camera Phone

When choosing a camera phone, many assume that a good quality camera that produces good quality photographs are the ones with the largest mega pixel (MP). Fact is, the value of the mega pixel a camera phone isn’t the most important aspect, and doesn’t automatically produce the highest quality photograph. The mega pixels is only […]


Ten Things You Should Know about Auto Focus

The Auto Focus (AF) System in a camera found in the 1980’s is an important discovery in the world of photography and has had a major impact in bringing convenience to photographers. Without the Auto Focus, we would have to manually adjust the focus on the lens to really precisely focus on the objects we […]