Use the flash

Whether you're a photographer or a photography enthusiast, canvas prints the easiest way to take a portrait is to use the sun as a light source during a good day. But if you want to control the light 100% yourself, the best way to do it is to use a flash, not only at night, but also during the day. Today we will explain how to use flash.

1. Adjust to the highest synchronization shutter

Shooting flash works, background and main lighting is to be treated separately. Since the lighting in the background is from the sun, canvas prints online australia the camera's aperture and shutter speed are used to control it. We want the background to be slightly less exposed than half a level to one level. We can use the shutter prerequisite mode, first setting the ISO sensitivity brightness to the minimum (e.g., ISO 100), the shutter speed to the maximum synchronization speed of the flash (e.g., 1/200s), and then setting the exposure compensation to -0.5 to -1ev. Experienced users can use manual exposure mode directly.

DSLR users or those without DSLR will find that due to the fierce sunlight, the shutter speed is limited to the maximum synchronization speed of the flash lamp, and high-speed shutters such as 1/500s and 1/1000s cannot be used. The camera will reduce the aperture to f/13 or even smaller, which will limit the use of flash lamp and the depth of field. Instead, the semi-professional DC of the inter-lens shutter is used, so there is no limit of the synchronous shutter of the flash lamp, extra large canvas prints australia which is convenient to use the flash lamp with small output.

Some high-specification DSLRS can provide relatively high speed flash synchronous shutter (such as 1/250s), while others can use the medium width system of the lens shutter and can provide up to 1/1600 seconds of synchronization speed, which is convenient for photographers to use a larger aperture when using the flash light during daytime.

2. Use high output flash

The background brightness is controlled by the aperture and shutter, and the main body of the lighting is responsible for the flash light. Because the aperture is very small, greatly reducing the ability to absorb flash light, even if the flash is output at full power, it may still be underexposed. Therefore, it is very important to use high-output flash lights (such as GN50 and above). In addition, the distance between the flash lights and the main body can be as close as possible. Meanwhile, the soft light equipment with flashing lights, such as soft light boxes and umbrella, can be reduced to reduce the loss of flashing light.

3. Use the high-speed synchronous flash function

It is well known that shooting with a large aperture can produce a shallow depth of field. However, in the case of flash pressure, the camera aperture will be small, the background and foreground of the photo will be very clear. If the flash has a high speed sync mode, you can use this feature, which allows you to use a faster shutter speed and a larger aperture to achieve a shallow depth of field. However, using high speed synchronization mode will reduce the output of the flash light a lot (details are not redundant), so even if you can use a large aperture, it will not increase the flash light irradiation distance, so don't put the flash light too far from the main body.

4. Use ND filter

If the flash does not have high speed synchronization mode, or if your synchronizer does not support this function, you can also use the ND dimming filter, reduce the background brightness, in the normal maximum synchronization speed, can also use a large aperture. If you are shooting with an f/2.8 aperture, it is recommended to use an ND8 filter. In addition, there are some ND filters on the market that can change the intensity of light reduction, making them more flexible to use. The ND filter reduces the background light and reduces the lens's ability to absorb flash light, so even with a larger aperture; the flash distance and output are not improved.

5. Exit flash

With this kind of high - order technology, I believe will not be willing to ordinary shooting effect. By using the flash light in off-machine mode, you can create a three-dimensional sense of the main body and create a kaleidoscopic effect. You can use an off-camera flash sync cord or a wireless synchro to keep the flash away from the camera. Some lower-order synchrons will slow down the flash shutter sync speed. It is better to use the flash light tripod, acrylic prints australia or ask an assistant to hold the flash light to make the shooting smoother.