# Question: How Is Shutter Speed Calculated?

## How do you explain shutter speed?

Shutter speed simply refers to the amount of time that the camera’s shutter is open.

The longer the shutter is open, the more light that passes through to the camera’s sensor.

Conversely, the shorter the shutter is open, the less light that’s able to pass through..

## What is the 500 rule in photography?

You take the number 500 and then divided by the focal length of your lens = the longest exposure before stars start to trail or blur. For example; let’s say your taking a shot with a 16mm lens on a full frame camera. 500 / 16 = 31.25 seconds, which you can round to 30 seconds.

## Is ISO Shutter Speed?

The ISO speed determines how sensitive the camera is to incoming light. Similar to shutter speed, it also correlates 1:1 with how much the exposure increases or decreases. However, unlike aperture and shutter speed, a lower ISO speed is almost always desirable, since higher ISO speeds dramatically increase image noise.

## What does 1/30 mean on a camera?

Instead, most cameras indicated seconds with a double quote after the number. So a one second shutter speed is displayed as 1″. A 30 second shutter speed is displayed as 30″.

## What do shutter speed numbers mean?

Shutter speed is a measurement of the time the shutter is open, shown in seconds or fractions of a second: 1 s, 1/2 s, 1/4 s … 1/250 s, 1/ 500 s, etc. … In other words, the faster the shutter speed the easier it is to photograph the subject without blur and “freeze” motion and the smaller the effects of camera shake.

## What is the best shutter speed for waterfalls?

But when you’re photographing a waterfall, you actually WANT to capture that movement. If your shutter speed is too fast, you will simply freeze the water instead of capturing the flow. Depending on the flow of the water, a typical shutter speed for shooting a waterfall is between 1″ and 5″ (1″ = 1 second).

## What is the best shutter speed for outdoor photography?

If you’re shooting handheld, be sure to use a fast shutter speed, as well. Few photographers can match tripod sharpness with a shutter speed of less than 1⁄60 sec. for wide angles, 1⁄125 sec. for standard focal lengths or 1⁄500 sec.

## What is a good shutter speed for portraits?

around 1/200 of a secondMost professional photographers shoot portraits at a shutter speed of around 1/200 of a second. This is not because of camera shake, generally, but because this is the maximum synch speed of most flash units employed in studio portrait shoots.

## How do you photograph waterfalls?

How to Photograph WaterfallsYour Goal – Slow Shutter Speed.Use a Tripod.Use the Lowest ISO.Stop Down / Change Aperture to a Larger Number.Use a Neutral Density Filter.Use Wide-angle and Telephoto Lenses.

## What is the best shutter speed for video?

As a rule of thumb, you want your shutter speed to be approximately double the number of frames per second that you are recording. So, if you’re recording at 30 frames per second, you want your shutter speed to be 1/60th of a second.

## What shutter speed is 15 seconds?

Shutter Speed Range: 15 Seconds – 2 Minutes These slow shutter speeds are used for long exposure low light conditions including, milky way, star trail, and northern lights photography. They also work well for long exposure photography of moving objects producing a motion blur effect in clouds and water.

## What shutter speed is 20 seconds?

Another example is 20 seconds, which shows as 20″ on the camera. The double quote is a math symbol that stands for the seconds. Many of the DSLR cameras these days have the “Bulb” shutter speed mode. In bulb mode, you can get any shutter speed up to 30 minutes.

## What is a good shutter speed?

As a rule of thumb, your shutter speed should not exceed your lens’ focal length when you are shooting handheld. For example, if you are shooting with a 200mm lens, your shutter speed should be 1/200th of a second or faster to produce a sharp image.

## How do I make my shutter speed slower?

Don’t be afraid to experiment.“Slowing down the water just a bit can create a sense of movement. … Reduce the ISO: Set your ISO at its lowest native setting. … Stop Down the Aperture: Set your aperture at its smallest setting. … Set the Speed: Now just set it to the proper exposure level using the camera’s meter.More items…•

## How do you blur waterfalls?

To create a motion blur and get blurred waterfalls, we need to use a slower shutter speed. We need to allow the waterfall to paint it onto the sensor. Something in the range of 1 to 5 seconds should work. In some cases, you might need to use a shutter speed a little bit above or below that.