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

  • Pre-Order Your Lomo’Instant Now And Receive It In Two Weeks!

    written by shhquiet on 2014-10-31 in #news

    The Kickstarter deliveries will be shipping very soon and so we would like to let you know that if you pre-order your Lomo’Instant today, you can receive it in two weeks’ time!

  • Carnaby Street Eats Lomography Meet with the Fisheye Camera

    written by hannah_brown on 2014-06-25 in #events
    Carnaby Street Eats Lomography Meet with the Fisheye Camera

    On Sunday 20th July from 11:00 am to 6:00 pm, 30 of Carnaby’s top restaurants, bars and cafés are bringing their best dishes and concepts out onto the streets of Carnaby, London. We will be running a special "Street Eats Lomography Meet with the Fisheye Camera". Read on for more information

  • Lomo’Instant Sanremo Update – Pre-Orders Now Open For Next Shipment Batch

    written by tomas_bates on 2014-12-03 in #news
    Lomo’Instant Sanremo Update – Pre-Orders Now Open For Next Shipment Batch

    Have you been eying up the beautiful Lomo’Instant Sanremo Edition? Well, now’s the time to place your order! We are starting to ship the current batch of pre-orders right now (the delivery date will depend on your location) and are now taking pre-orders for the next batch which we estimate will be ready to ship by December 12th. This next batch of pre-order cameras will be the last stock we have for delivery before the upcoming holidays and will be delivered on a first come, first served basis; so place your pre-order now to secure your place in the queue and avoid disappointment!

  • Shop News

    Feed your LC-A 120 the finest emulsions and save!

    Feed your LC-A 120 the finest emulsions and save!

    Shoot more with LC-A 120 without breaking your budget! The Phoblographer Editor’s Choice Award Winner now comes in a Bundle with 120 format film at 15% off!

  • December 21st Advent Offer: It’s time for a last minute treat! (Online Code: CRACKLINGCAMERAS)

    written by jacobs on 2014-12-21 in #news
    December 21st Advent Offer: It’s time for a last minute treat! (Online Code: CRACKLINGCAMERAS)

    Do you know a really awesome way to make someone extremely happy this holiday season? We do and we're here to tell you about it with today's incredible Advent deal of the day! Put a smile on someone's face by gifting them with a beautiful analogue camera and save 15% by doing it today. Check out our wide selection in the Online Shop!

  • Lomography LomoChrome Purple XR 100-400: My Take on Colors

    written by guanatos on 2014-11-14 in #reviews
    Lomography LomoChrome Purple XR 100-400: My Take on Colors

    The beauty of this film is in how it changes the colors we see. We all know that the big changes happen to the color green, but what about the other colors? Read on to see what I found out!

    2
  • December 4th Advent Offer: Looking for a terrific camera for the holidays? (Online Code: BRIGHTDELIGHT15)

    written by jacobs on 2014-12-04 in #news
    December 4th Advent Offer: Looking for a terrific camera for the holidays?  (Online Code: BRIGHTDELIGHT15)

    It's that time again — the Lomography Advent deal of the day! If you're in search of a beautiful gift for creative folks or looking to get into the game yourself, we've got your back. Today's super deal is on our Diana F+ and Diana Mini, as well as a continued discount on our plastic bodied cameras.

  • Shop News

    LomoKino & LomoKinoscope Package

    LomoKino & LomoKinoscope Package

    Enjoy a truly analogue moviemaking experience with Lomography's 35mm movie camera and an accompanying accessory to watch your films with. View your masterpieces in the most analogue way possible with the LomoKinoscope. Get it now 20% off the regular price!

  • An Interview With Malin Fabbri About Alternative Photography

    written by jacobs on 2014-11-14 in #lifestyle
    An Interview With Malin Fabbri About Alternative Photography

    We recently had the opportunity to chat with founder and editor of AlternativePhotography.com, Malin Fabbri, and we are pleased to now share it with you! Our goal was to better understand the inner workings of the Alternative Photography community and its formation, as well as get a sneak peek into the life of its founder. Malin was generous in sharing her knowledge, wisdom and history and we are grateful for it, as we're certain you will be also!

  • 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!

  • December 24th Advent Offer: Shop Today & Save 10%! (Online Code: LASTCHANCE10)

    written by jacobs on 2014-12-24 in #news
    December 24th Advent Offer: Shop Today & Save 10%! (Online Code: LASTCHANCE10)

    Today is our last Advent deal of the day! We know you're probably busy making preparations and eating pie, so why not take a break and treat yourself to something nice? Our last awesome deal is 10% off your order in the Online Shop or your nearest Gallery so hurry on over before the deal ends!

  • Shop News

    Give your space a facelift with your own analogue print

    Give your space a facelift with your own analogue print

    Really want to bring your film photos to life? We’re now offering totally analogue fine art prints in a host of large sizes and formats! Carefully enlarged from your negatives onto premium photographic paper by lab professionals, each picture is a unique piece of craftsmanship.

  • 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.

    3
  • Most Popular Photo Last Year: September 13, 2013

    written by icequeenubia on 2014-09-13 in #news
    Most Popular Photo Last Year: September 13, 2013

    The impeccable beauty of nature is truly astounding and it appears even on the smallest of creatures.

    1
  • The New Petzval Lens Is Now Available For Regular Purchase!

    written by tomas_bates on 2014-08-14 in #news
    The New Petzval Lens Is Now Available For Regular Purchase!

    The day has finally come! We are very excited to tell you that you can now order the Lomography New Petzval Lens for immediate delivery from the Online Shop or purchase it in your hands at Gallery Stores. To put full focus on our favorite portrait lens, soon we will be hosting special launch parties in our Gallery stores all over the globe! So do not miss an opportunity to become part of the sensational New Petzval Lens family today.

    1