The Beautiful Science Of Bokeh

1

In order to truly understand a concept, we must know the science behind it! Today let's look into "bokeh". Read on and be informed.

Photo by sandravo

The root of the Japanese word “bokeh” is, in effect, negative – often used to describe a “confused” mental state. In photographic terms, bokeh describes the rendition of out of focus points of light. The word “confused” was used because the light beams no longer come together at a single point in an orderly manner. You can even think of it as the “confused” part of a photo. It’s important to remember that bokeh isn’t the out of focus area of the photo itself – it is the character or quality of the out of focus parts of an image and in that way – it, bokeh, is a subjective phenomena.

Photo by desibel

How does it happen?

Any image is represented by a large number of images of points. An unsharp imaged point is associated with a circle of confusion or a blur disk and a lens produces a circle of confusion which is an illuminated shape directly corresponding to that of the lens aperture. These blur disks are judged by shape, size and the light distribution they receive. The size of the circle of confusion depends upon how far the film is from where that particular detail of the image is focused and if the shape of the aperture is for example a star – the circle of confusion will effectively become a “star” of confusion. The larger the aperture (smaller f-number), the shallower the depth of field, the more prominent the effect appears on the out of focus area in the background.

Taken with the Petzval lens

The characteristics of lenses, including their aberrations must also be taken into account when thinking about bokeh. There are also several variables that affect the appearance and quality of out of focus areas such as picture format, focal length, camera-to-subject distance, distance to the background or the foreground, shapes and patterns of the subject, iris shape, aberrations of the lens, speed of the lens, foreground/background brightness and colours.

written by hembot on 2014-05-19 in #news #bokeh #petzval-lens

One Comment

  1. scootiepye
    scootiepye ·

    Beautiful Bokeh!
    Love Bokeh? Maybe you'd like to see more? Check out my flipboard zine collection of awesome bokeh images from all over the world, should it perhaps interest you ?! All images link back to the original image flip.it/4M8W5

More Interesting Articles

  • A Secret of the Cosmos: Launching the Newest Lomography Product

    written by Lomography on 2016-01-19 in #gear #news
    A Secret of the Cosmos: Launching the Newest Lomography Product

    Shh! We've got a secret matter at hand, and it's coming at you at the speed of light! We're being as mysterious as the Cosmos about our new out-of-this world product, constantly orbiting around our big reveal. But the eclipse will pass and soon the stars will align. Until then, there must be some questions floating around in the universe, right? Well, there's no need to look to the stars to find your answer! Stay on Lomography's wavelength as we kick into hyperdrive. Let your imagination skyrocket and see if you can decipher our otherworldly clues!

    19
  • Black and White Photography: The Forms of the World

    written by lomographymagazine on 2016-01-19 in #world #lifestyle
    Black and White Photography: The Forms of the World

    Colors may be amped to look unreal, like nothing of this world. Shots may be doubled, cross-processed, post-processed, mixed up into collages. The possibilities are infinite, yet some photographers still prefer black and white. Even in 2016, it is an ode to classic values of precision and balance. Light and shadow must be one pleasing dance. And just like in a well-choreographed piece, forms are obvious or playing coy. It all depends on how you're looking.

  • May 2015 Events at the Lomography Gallery Store New York

    written by lomographynyc on 2015-04-29 in #world #news #events
    May 2015 Events at the Lomography Gallery Store New York

    Let's go outside! Spring has sprung in New York and we're delighted to present to you a couple of workshops to get you into the shooting mood. We're also excited for our next exhibition featuring the work of New York photographer and LomoAmigo, Emily Soto. Read on for more information!

  • Shop News

    Start to Get Wide with Horizon Kompakt

    Start to Get Wide with Horizon Kompakt

    Prepare your overwhelming panoramic views and capture them with this ultra-wide panoramic 35mm gear. Start sharing your great memories with family and friends the analog way!

  • Trending LomoKino Movies of October 2015

    written by lomography on 2015-10-31 in #world #news #videos
    Trending LomoKino Movies of October 2015

    Creating a movie, no matter how short it is, requires a certain amount of discipline. For it to be coherent, one must keep his focus throughout the entire process - from shooting the scenes to editing the clips. With that, we are truly grateful for the effort that these lomographers put into making these LomoKino movies.

    4
  • Reviews on Rewind: Pop 9

    written by Julien Matabuena on 2015-03-29 in #gear #reviews
    Reviews on Rewind: Pop 9

    The Pop 9 is an analog multilens wonder that allows you to take a mosaic of nine images in one frame à la Andy Warhol's famous pop art. In this Reviews on Rewind installment, we dug through our archives and found these informative reviews of the Pop 9 - just in case you're looking into snagging a fun camera in your arsenal!

  • First Impressions of the New Lomography 58 Bokeh Control Lens: Emily Soto

    written by Jill Tan Radovan on 2015-08-07 in #people
    First Impressions of the New Lomography 58 Bokeh Control Lens: Emily Soto

    Emily Soto is a New York City-based fashion and fine art photographer. With Canon 5D Mark III and Canon EOS cameras, she took photos with the Lomography 58 Bokeh Control Lens, producing a series of beautiful images that are reminiscent of renaissance portraits. She talks about the experience and the concept behind her photos in this exclusive interview.

    2
  • Shop News

    the perfect surprise for every analogue loving enthusiast

     the perfect surprise for every analogue loving enthusiast

    Let your loved one pick the gift of their dreams. Lomography Online Shop Gift Certificates are the perfect present for every analogue devotee on your gift list

  • Historic Vienna with the New Petzval Art Lens

    written by bgaluppo on 2015-04-22 in #gear #lifestyle
    Historic Vienna with the New Petzval Art Lens

    To celebrate the classic Petzval Lens born in Vienna, we grabbed a New Petzval, left the office in the dust and went out into the beautiful golden day for a shoot among the historic hot-spots in the original city of music. Read on to see more of our imperial-themed photo shoot!

    3
  • Lomo’Instant Wide Tip No. 1 - Getting Started

    written by Lomography on 2015-10-13 in #gear #tipster
    Lomo’Instant Wide Tip No. 1 - Getting Started

    The beauty of instant cameras is that they let your spontaneous side truly run wild, and the Lomo'Instant Wide gives you just the opportunity to experiment with all sorts of shooting methods on the fly!

  • Capturing the Beauty of Life – A Talk with Esben Bøg Jensen

    written by jennifer_pos on 2015-04-01 in #people #lifestyle
    Capturing the Beauty of Life – A Talk with Esben Bøg Jensen

    Warm tones, subtle grains, beautiful moments of everyday life – the photos by Esben Bøg Jensen, a young and talented photographer from Denmark, let us escape into our memories and dream about a never-ending spring. We talked to the photographer himself and couldn’t help feeling a pleasant wave of joy overcoming us. Read on and get inspired to search for the moments that make us feel alive.

    3
  • Shop News

    Experience Sleek Medium Format Shots of Belair City Slicker!

    Experience Sleek Medium Format Shots of Belair City Slicker!

    Take high-quality medium format shots, professional grade panoramas and get tons of customizable features yet compact in size! Grab this camera at a discounted price!

  • The Wonderful Adventures of the Petzval Lens

    written by pripri2000 on 2015-04-23 in #people #news
    The Wonderful Adventures of the Petzval Lens

    As all you lomographers will know, since its re-inception we have been following the tracks of the Petzval Lens. Indeed, this bokeh-genius has been traveling far and wide, falling into the hands of many a photographer the world over. We decided to put together this little catalog of talented artists and their most enticing photographs, shot using the Petzval lens, so we can show you what wonders and mischief we have brought upon us. Come take a look at the outcome of the Petzval’s transnational journey.

    4
  • Vincent Chan Travels to the Fascinating Countryside with Petzval 58 Lens

    written by Lomography on 2015-10-26 in #people #lomoamigos
    Vincent Chan Travels to the Fascinating Countryside with Petzval 58 Lens

    Vincent Chan doesn’t like constraints. He is passionate about natural and quiet environments. He launched Compose The Story, which provides photography and cinematography services, recently as a means for him and his colleagues to document the beauty of their surroundings. He brings the the Petzval 58 Bokeh Control Lens into the country, and shares glimpses of its beauty in pictures.

  • Photo of the Day by gregoire1969

    written by lomography on 2016-02-09 in #world #news
    Photo of the Day by gregoire1969

    Let today's featured photo be a lesson on the usefulness of filters in long exposure photography.

    1