Skip to main content

5 things to know for getting started with off camera DSLR flash photography

DSLR photography is all about light and seeing how it affects the photos we take. As a beginner, we first understand how to adjust camera settings according to the available light only. This is achieved by varying any value of exposure triangle (Aperture, ISO or Shutter speed). But what if there is no light or less light? Or the user does not want to bump the ISO or decrease shutter exposure time? The first natural thought that comes to mind is adding light.
Light can be added in so many different ways, off camera flash is the most common technique. Addition of flash opens up a whole new world of learning opportunities which is the inspiration behind this beginner focused post. While getting started with DSLR flash photography, there are a few important topics that must be understood beforehand. We will discuss these in a list wise order one by one. 

1) AF assist beam: This is a red color focus beam light generated by the external flash unit to help the camera focus in dark situations. This prevents the camera from constantly hunting for something to lock focus on. Example: Nightclub photography. 

2) TTL (iTTL or eTTL): Stands for through the lens. TTL is like flash auto mode where the operator does not have to think about adjusting flash power when the situation changes. Read more details about when to use TTL mode in my previous post about TTL and manual flash photography.

Off camera external flash
Canon DSLR shot without flash
3) HSS: Stands for high-speed sync. Whenever the on-camera internal flash or external flash is used, shutter speed gets limited to a value of either 1/200 or 1/250 second. To overcome this limitation, most of the DSLR flash manufacturers make HSS compatible flash units. These units allow the camera shutter speed to go up to 1/4000 second. 

4) Flash Zoom: Just like lenses can zoom, flash units also have a capability to zoom into the area where the emitted light will go. Flash zoom defines how much area will be illuminated by the flash. Zoomed out flash will spread the light emitted to a wider area, zoomed in flash value will restrict it to a lesser area.

DSLR flash off camera
External or off camera DSLR flash

5) Triggering off-camera flash: Let's say there is a Speedlight or Speedlite mounted on a stand 3 feet away from the camera operator. How can the operator communicate to this flash about when to fire? This communication can be done in many ways.
Radio wireless triggers: Have attached a photo of my Yongnuo flash triggers as an example.
Infrared triggers.
PC sync cord.
Optical (Through inbuilt flash or another external flash on low power).

Yongnuo off camera flash wireless triggers
Off camera flash wireless triggers

6) Channels and groups: This is mainly for off-camera flash photography during events where multiple photographers are present.
Example: Photographer A has 2 flash units set up and Photographer B has set up 1 flash unit according to their choice. If photographer A is on channel 1 and photographer B is on channel 2, they will not trigger each other's flash units while taking photos. This is the main purpose of having channels. Under channels, there can be a single flash or groups of flash units. 

7) Optical master or Slave: As the name itself suggests, master flash is responsible for giving orders to other flash units about when to fire. Flash units following these orders are called slaves. The master sends pre-flashes which control the slave units. Not every flash unit supports dual master or slave mode.

That's all about flash photography beginners for now. If you found this post helpful, share the photography love by sharing this post. :) 


Popular posts from this blog

sRGB vs Adobe RGB colour space explained

Digital images are everywhere, both offline and online. Each digital image is made up of a large number of square sized individual pixels. Zoom into an image at 2000 % or more in any of the viewers, you will see these pixels. Here is an example:

In order to categorize pixel colours, RGB and CMYK are the two widely used colour models. According to the RGB colour model, each pixel colour can be considered as an addition of different shades of red/green/blue light. These light shades are calculated according to the bit depth of the image. Jpeg images are usually 8 bits per colour channel (red, blue or green), which means 2^8 ( 256) different shades of each red/blue/green colour are possible. Few examples to make it clear how different colours shades are represented:
Red: (255, 0, 0)
Green: (0,255,0)
Blue: (0,0,255)
White: (255, 255, 255)
Black:  (0,0,0)

What does CMYK do? It is a subtractive colour model for printing purposes and stands for Cyan, Magenta, Yellow and Black. According to …

5 things to know before switching DSLR between Canon and Nikon

Photography is an expensive hobby or profession and everyone wants the best bang for every dollar they spend. This applies to any photography equipment starting with low-cost tripods to super expensive professional grade lenses. I am sure all of us must have heard of Nikon and Canon. The good old battle between these two DSLR brands will never end. Whether you are a beginner or a full time professional, there are a few quirks everyone should know before switching camera between these brands.
1) The used market for Canon gear is just enormous which makes a good plus point for investment and buying decent used gear. Go to craigslist for a given city and search used photography gear, the difference will be easily noticeable. I searched for 10 different cities in Canada and all had comparatively more listings for Canon.
2) Nikon has better dynamic range cameras. Dynamic range is the ability of the camera to sense the lightest and darkest scene in a given photo retaining as much detail as…

How to locate the milky way for night sky DSLR photography?

Our Earth is part of a huge sized galaxy, known as the Milky Way. Milky Way basically consists of our whole solar system and is made up of 100-400 billion stars. Until last year, I had no idea if we can see Milky Way with naked eyes. After a lot of failed late night drives and sleeping at the beach, I was finally able to get a grip on what I actually need to see Milky Way. In September 2016, I got my first Milky Way shot. It was an extremely emotional and priceless moment when I first saw the magnificent milky way with my own eyes. All the failed attempts or discomfort of not going to bed early seemed nothing in that moment. I would consider sharing this priceless memory with fellow photography folks as the inspiration behind this post.  Moving on to the technical part, there is a minimal amount of gear required to take Milky Way shots using your dslr. Focusing at infinity and calculating the shutter speed to avoid star trails is purely technical, capturing Milky Way takes a little mor…