As I often say, Photography is the art of capturing the light and sometimes while a situation would be worth capturing, there is not enough light to do so. Hence the use of Flash or flashes which refer to any artificial light.
There are mainly 2 type of artificial light out there: Continous and strobe. However, I like to refer to 3 different kinds of Flashes
- Pop-up Flash built in the camera body.
- Studio Flash that requires being plugged to electricity (wall socket or battery pack) to function.
- Speedlight that can be mount on and off the camera.
Let’s see the pros and cons for each…
Pop-up Flash
They can be found on almost all consumer cameras from the simplest compact (even phone camera such as iPhone) to the neo-professional DSLR.


Pros
- They come built-in, so they are cheap per definition.
- They do not take any extra space when carrying the camera around.
Cons
- They are located too close to the lens which leads to red-eye affect in portraiture.
- They have only a few feet of light coverage.
Studio Flash
They are the big guns in photography, and a must have in any interior professional photo studio. They either provide a continuous light source of a flash burst similar to the pop-up flash but much more powerful.


Pros
- Can be very powerful and mimic a sunny day.
- Some of them provide either continuous or a modelling light which enables the photographer to adjust their orientation without having to fire the camera for test shots. Hence gain in set up.
- The head can be adjusted to any angle.
- Can be used with Softbox and other light diffusers.
Cons
- Quite a heavy machinery that cannot be transported anywhere anytime.
- Requires being plugged to electricity or a battery (similar to a car one).
- Rather expensive, starting price from a few hundred pounds.
- Require being triggered by the camera via cables or remote triggers.
Speedlight/Off-camera Flash
They are the bridge between Studio and pop-up flashes.


Pros
- Can be very powerful and mimic a sunny day.
- Some of them provide modelling light which eases their set up.
- Do not take much space, very light in weight and therefore can be carried in the camera bag.
- Runs on 4 AA batteries.
- Starting price is 50 pounds.
- The head can rotate 180 degrees and up or down to facilitate light bouncing.
- Can have a fairly quick recycling time ( time needed between burst).
- Can be mounted on or off camera and work as a slave triggered by the camera built-in flash, or via cable or a remote trigger.
- Can be used with a softbox and other light diffusers.
Cons
- Less powerful that Studio Flash.
- Do not provide a continuous light source.