Photography business, what are the opportunities?

Chromatic Aberration on a Lens and How to Avoid Them

Photographer’s Etiquettes You should Know About

Tips for Photographing Full Figured Models

When Should We Use Manual Focus?

Tips on becoming a Professional Photographer

The Easy Way to Shoot Children’s Expressions

Wildlife Photography Tips and Tutorial with Chris McLennan

Easy ways to use manual lenses on DSLRs

Tamron and Tokina Lens Codes and What They Mean

Understanding GN Value and how it’s Calculated

Posted by oneslidephotogaraphy On October - 10 - 2020

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 what is guide number at OneSlidePhotography.com

Cool and Sexy Fixed Gear Photography

Here are, collections of cool and sexy fixed gear photography from around the world…enjoy 😉


When Do We Need to Upgrade Our Photographic Equipments?

You may often listen to photographers’ questions asking which brand of camera that suits them to be a better photographer. Stop asking such question. Just use what you have in hand now. Go find great locations to shoot wherever it is and just take shots and snaps. Sometimes, people think that expensive camera makes images […]


Photographer’s Etiquettes You should Know About

As social beings and specifically as photographers, we are not spared from human interactions. If photography is your hobby, then we deal directly with your subjects. Even if your interests are more towards landscapes, you will inevitably interact with the people on location to gain information or any assistance. That is why etiquette is an […]


What’s the Safest Way of Storing Digital Photograph Files?

Digital photography have made it easier for photographers to do their craft. A simple “click” of the shutter button and your photos will instantly appear on the LCD of the camera. Simple, but it brings upon a new dilemma. How do you go about storing these digital files for prolonged safekeeping? The following may answer […]


How to Change the Lens Safely

One of the advantages of a DSLR is that the user can interchange different lenses on the camera body to achieve a variety of photographic effects. DSLR cameras have a release mechanism to change lenses quickly and easily so you don’t miss that perfect photo. Here are some technique to change DSLR lenses. The advantage […]


Noise in Photographs: The Causes and the Remedies

Noise, or a set of spots or visible pixels on photographs, often annoys many of us because it lowers the image quality. Before we discuss the remedies to fixing noise, we need to get a better understanding of the cause of these spots on our photos.


Should you Upgrade Your Camera First or your Lens?

As a photographer progressing in your craft, there must come a time when you’re faced with a dilemma; which should be a priority, a camera or a lens upgrade? Neither has a specific standard which is more of a priority; what you need to find out is which of the two do you really need […]