# Photography aperture and shutter speed relationship questions

### Making sense of aperture, shutter speed and ISO with the exposure triangle - DIY Photography

Exposure refers to the amount of light that enters the camera and hits Take a look at the chart below to see what different apertures look like. How can I get a high shutter speed and correct exposure when taking photos of .. and human's manual settings i.e. Shutter and ISO and their co-relation. I am. If I were to move the f stop to 11, and shutter speed to 1/30 then this is that will answer many of your questions including these questions.

The result is that bright objects in the scene cause other areas of the projected image to get lighter too. The overall affect is to reduce contrast and give the appearance of less sharpness.

### Newest 'shutter-speed' Questions - Photography Stack Exchange

Most of the time, however, we trade off f-stop between letting more light thru and too small a depth of field. The various results you trade off against each other are mostly giving the sensor enough light so that the image signal is large compared to the noise, motion or camera shake blur, and depth of field.

Adjusting Exposure In photography, a factor of two in exposure is a clearly noticable step, but not a particularly large one. We usually think of adjusting exposure in numbers of 2x steps. You can think of a factor of 2 as being a "standard increment" in photography. Shutter time is also linear. The f-numbers math is more complicated. The exposure goes with the logarithm of the reciprocal of the f-number. Since this gets complicated to do mentally, a bunch of f-numbers have been pre-computed that cause half the exposure from the previous.

Each of these f-numbers must be the square root of 2 higher to make half the exposure.

## Shutter Speed/F Stop relationship

These values are so commonly used that early cameras often had detents on the aperture ring to allow positively setting to one of these values, and to allow adjusting up or down by feel while looking thru the viewfinder. These detents were also called "stops", which is where the term "f-stop" came from.

Photography Hack: The Secrets to, Aperture, Shutter Speed, ISO & How to Get The Perfect Exposure

Since the common f-stops each represent a factor of 2 brightness from the next, the term "f-stop" has come to be used as a factor of two in exposure, even if the aperture itself isn't changed.

We usually think of exposure in terms "f-stops" up or down. This came out too dark, and you felt that it needed 2 f-stops more exposure factor of 4 more light. You might try any of the following to get this additional 2 f-stops of exposure: Most modern sensors have little noise relative to full exposure at ISOso the last tradeoff in these examples wouldn't likely be a issue in most cases.

Again, it's all about tradeoffs. This means that you need half the amount of light hitting your sensor for the same exposure. Thus, exposure is increased by a factor of 2.

In the same manner, if you want to take a photo of the early evening skyline, you will need to consider that it is already dark, so you will need a high shutter speed to properly capture the image. What you can do is increase the level of sensitivity to so that exposure is increased by five Once you learn how to take advantage of the ISO, you can experiment with the images you want to capture.

You can create different ways of presenting your subject. In addition, you will also be more comfortable shooting in different lighting conditions. The aperture is the opening found in your camera lens. If you look closely at the camera lens, you will find round or ring-like metal blades. These blades open and close: As such, controlling the aperture or choosing to use the Aperture Priority mode allows you to adjust the amount of light that can get into your camera so that it can either open widen or close narrow.

The aperture setting is determined by several f-stop values. The usual numerical values for the f-stop are 1. When you adjust the aperture, note that as the numerical value increases, the aperture becomes smaller and the amount of light that gets through decreases. Also, the smaller the aperture size, the wider your depth of field — a deeper portion of your photo will be in focus. What's a correct exposure? Once you activate the camera meter by half-pressing the shutter release, the camera will suggest an exposure based on the brightness of the area being metered.

In the camera's automatic and scene modes, that's about as far as it goes. The semi-automatic exposure modes - Aperture Priority, Shutter Priority and Program - give you more control over how you expose the shot, each in a different way; while Manual mode gives you full responsibility over aperture, shutter speed and ISO.

Although there might be a preferable exposure, there are a number of ways in which to achieve it.

## Understanding Exposure, Part 3: Shutter Speed

It's all about balance: Which combination you choose is down to the look you want to achieve: Do you want moving objects to be razor-sharp or have motion blur?

That's a lot to think about If you choose to shoot in one of the semi-automatic modes, the camera does most of the donkey work for you. Once you set an aperture in Aperture Priority mode, for example, the shutter speed will be set automatically.

If you decide to change the aperture, the camera will adjust the shutter speed accordingly to maintain the same exposure. It's a similar story with Shutter Priority mode: You can even use the Auto ISO option to let the camera handle that choice of sensitivity too.