Simple Blurring (Bokeh) Effect on Background

A macro lens is able to produce beautiful images of close-up with bokehness. This is one application for owning an expensive prime lense.

First of all, what is bokehness, or simply bokeh in photography.

This term is used often in photography for producing visual effect blur in the background.

Generally, it aims to show imagery result that is out-of-focus on the far distant objects, such as landscape, while what is nearest to you is in sharp focus.

Beside creating bokeh by using macro lens, the magnification of subject-matter is also achievable. Usually to as close as life-sized object, such as an insects or flowers.

Others with better capability can produce with a magnification of one-is-to-two. Meaning to say, double the original size in real-life.

Technically, It is the super wide aperture that makes the bokeh and not because of the great magnification capability from prime lens.

Aperture value with f/2.0 or below is consider great lens. Most popular cameras come with wide-angle of aperture f/5.6.

For iPhone 8, it has wide-angle f/1.8 and telephoto of f/2.8 aperture, but there are emulated capabilities by software and not actual mechanical shutter from interchangeable lens.

Comparing to mobile camera, the feature of magnification and bokeh are much of the emulated capabilities than those from the expensive dSLR lens.

Yet, mobile camera still able to produce some similar results.

The zooming feature from the cellphone camera will only enlarge the subject-matter, however, not the blur effect on the background.

The golden rule to achieve this bokeh from mobile camera is to place the subject-matter very near, typically 6 ~ 8 cm away from your focus lens.

Do not zoom when you go near to the subject-matter, that might defeat the purpose for achieving the blurry background.

As for iPhone 7 or 8, the telephoto lens can help to magnify. And again, zoom is not recommended.

A steady hand can obtain good imagery that is sharp and in-focus.

“If the wind will not serve, take to the oars.” – Latin Proverb

Close up Photo of Daisy Flower

Capturing a photo at close up should produce details of the subject.

Applying deep focus to express depth of field or simple point-of-view method works brilliantly.

This close up photo shows a single stalk of a star-shaped flower.

Commonly known as aster or daisy. It belongs to the sunflower family.

You can see on this image showing clearly some of the pollens deposited on its petal.

That’s the point of close-up or the fundamental in art of detail photography, to simply say.

This single stalk of flower is recognised by the flower disk (center yellow) and the flower rays (purple strap-shape petals).

The word “Aster” comes from the Greek word, “Astron”, meaning star.

“All nature wears one universal grin.” – Henry Fielding

I also want to capture the colours.

It’s lavender-blue colour stands out from the surrounding, thus, expressing contrast in colours.

It has only 8 flower rays which is probably a young stalk or different Asteraceae spices.

The surprising fact from wiki source mentioned “currently has 32,913 accepted species names, in 1,911 genera and 13 subfamilies.”

Deep Focus to Express Depth of Field

Taken this shot with a deep focus. It gives an expression of the first person looking at the flower.

In optics, it is called depth of field or point-of-view effect.

With depth of field, it creates blurry background on the distant and a sharper focus on the subject matter that is near.

iPhone 7 Plus, 8 Plus and iPhone X have telephoto camera to achieve this.

The f/2.8 aperture and digital zoom features. Technically speaking, telephoto lens has longer focal length with 85mm or greater.

That makes the capturing of close up object achievable with deep focus.

If using the f/1.8 wide angle, you will have to go very close the the subject. Like say, 5cm away.

Essentially, composition in the photography is to obtain a background at distant and a contrast of near focus subject matter.

A lens with a focal length shorter than normal is often referred to as a wide-angle lens (typically 35 mm and less, for 35 mm-format cameras), while a lens significantly longer than normal may be referred to as a telephoto lens (typically 85 mm and more, for 35 mm-format cameras). –Wiki