Factors that make the background photography is blur/blurred POSTED BY ABDU ON AUGUS

Many photographers either beginners or advanced, often making the background blurred. Indeed, this kind of photos are very popular because it makes the objects in the photography became more prominent. In addition, photos become more pleasing to the eye.

Easily create a blurred background because I use the camera sensor size “full frame” or about 24X larger than the usual pocket camera.

Anything factors that make the background photography is blur/blurred ?

1. Factors that make the background photography is blur: Lens aperture (Aperture)

By using a large aperture lens (f/2.8 or larger like f/1.4), then the background becomes more blurred.

The larger the aperture, the smaller the number.

2. Factors that make the background photography is blur: Lens focal length

The larger the lens focal range that is used, then the background becomes more blurred. Example: Background photo taken with a 55mm lens focal range is more blurred than when taken with a 18mm lens focal range.

3. Factors that make the background photography is blur: The ratio of the distance between the object image with the camera and the distance between the subject with the background.

The closer the camera to the subject of the picture and the greater the distance the subject of a photo with the background, then the picture becomes more blurred.

Example: When camera to subject distance of 1 cm photograph, and subject distance to the background image 20 m, it has become very blurred background. This is because the ratio / ratio is very large distances.

Conversely, if the distance to the subject of the photo camera 20m, and subject distance to the background image 1 cm, then certainly the background to be very clear / sharp.

4. Factors that make the background photography is blur: The size of the sensor in your camera.

Camera sensor size varies, the bigger, the easier it makes the background blur. Camera phones or pocket camera has a sensor size is relatively small compared with digital SLR cameras. In the digital SLR camera, divided again some kind of sensor size.

The smallest to the largest are: Four thirds (ratio of 4 by 3), there is a crop sensor 1.6 (Canon), 1.5 (Nikon, Pentax, Sony), there is also a full frame (Nikon, Sony) and medium format (phase One, Leica S2).

Photo above taken with a camera small pocket-sized sensors, other than that I wear a short lens focal range, which is 28mm so the background is still very sharp

Conclusion factors that make the background photography is blur.

Then how to make a background image or an out of focus becomes very blurry? simply

Disposable lenses with large aperture, use a large focal range (far), note the ratio of subject distance and background images, and use a camera with a large sensor size. source: photographyabdu.com