Capturing the world with Photography, Painting and Drawing

What is Lens Bokeh ?

Bokeh 6
Led lights and Lens Bokeh
Nigel Borrington

What is Bokeh

Wiki have a great description here : Lens Bokeh

“In photography, bokeh is the aesthetic quality of the blur, in out-of-focus areas of an image. Bokeh has been defined as “the way the lens renders out-of-focus points of light”.

However, differences in lens aberrations and aperture shape cause some lens designs to blur the image in a way that is pleasing to the eye, while others produce blurring that is unpleasant or distracting.

Bokeh is often most visible around small background highlights, such as specular reflections and light sources, which is why it is often associated with such areas.

However, bokeh is not limited to highlights; blur occurs in all out-of-focus regions of the image.”

I have been looking for a way to test this feature of my lenses for a little time, then at Christmas we put up some little led lamps as below. So using two different lenses one a Nikon 50mm f1.8 lens and A Mamiya 45mm f2.8 lens I took some images of the lights, with the lens as out of focus as I could get them.

I think that the images below clearly show the effects that are described in the Wiki link, seeing clearly the effects of the number of aperture blades and their shape.

The Nikon lens as seven blade but they are not curved , the Mamiya lens blades are curved. You can clearly see that the shapes created are very different.

Lens Bokeh examples

Bokeh 3
Led light used for examples below
.

Mamiya Sekor lens

Bokeh 6

Bokeh 4

Bokeh 2.
——————-

Nikom AIS Lens

Bokeh 1

Bokeh 5

10 responses

  1. Great entry Nigel, I love incorporating bokeh into my photographs. It really takes some images to a new level by isolating the subject. I especially like having the shallow depth of field when photographing my kids.

    Well done!

    February 26, 2014 at 3:09 pm

    • Hello Shane,

      That’s great and its a pleasure to share…

      I want to at some point move this into looking a the effects on general background details.

      Thank you πŸ™‚ πŸ™‚

      February 26, 2014 at 9:20 pm

  2. These are lovely bokeh examples, Nigel. πŸ™‚ πŸ™‚

    Bokeh love!

    February 26, 2014 at 3:11 pm

    • Hello Sharon πŸ™‚ πŸ™‚

      Thank you , πŸ™‚

      February 26, 2014 at 9:20 pm

  3. FASCINATING! – even though I am a photography ignoramus …

    February 26, 2014 at 8:01 pm

    • Hello M.

      Thank you and I am pleased you enjoyed the post, I don’t like to much technical stuff and just want to show what it actually results in ..

      So I am very pleased you liked πŸ™‚ πŸ™‚ πŸ™‚

      February 26, 2014 at 9:23 pm

  4. These are really lovely Nigel. : )))

    February 27, 2014 at 8:45 am

    • Hello Anne πŸ™‚ πŸ™‚

      Thank you , very pleased you enjoyed them πŸ™‚ πŸ™‚

      February 27, 2014 at 1:35 pm

  5. I love the Mamiya examples!

    February 27, 2014 at 9:56 am

    • Hello πŸ™‚

      Yes me too !!!

      I am not sure of the effects that the look and type of Bokeh has on the other features of these lenses are.

      I love all the other results the nIkon lens produces , the sharpness and the colour.

      I do love the Mamiya more for this effect though πŸ™‚ πŸ™‚ πŸ™‚

      February 27, 2014 at 1:43 pm

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