Tag Archives: swirl

Swirly Bokeh

Searching, studying, and experimenting on how “Swirly Bokeh” (aka Cat’s Eye Effect)  form, it’s been two days and now I can conclude what I’ve found.

Definition:

Swirly Bokeh (Cat’s eye effect); because the Bokeh is making a circular shape.

How Does it Form?

I will list the “recipe” as points, so you can understand easily (of I what I’ve read, and experienced):

  • You need Bokeh in the background, so that you’ll be able to see the “Swirl” effect (e.g. Keyboard, Grass, Bokeh of light coming between the leaves)
  • If the background is plain, lined, or lacks Bokeh then you’ll never have it (e.g. background is PC Screen, Walls)
  • Stick to focus range between 0.6 to 1 (if you go 0.5 or more than 1 you’ll hardly see it; you don’t get so close, and you don’t keep a big distance)

My Helios 44M-4 after experimenting

References – How it Forms:

Lenses:

This list contains some of the lenses that can produce that “Swirly Bokeh“:  *references below

  • Helios 40-2
  • Helios 44 F2 (Any Helios 44)
  • Helios 44M (I have Helios 44M-4)
  • Helios Cyclops 85mm F1.5
  • Helios Cyclops 85mm F1.2
  • Minolta MC Rokkor PF 50mm F1.7
  • Ziess Biotar 75/1.5
  • and others… But these are the famous ones, especially (Helios, made in USSR – Zenit cameras)

If you do not want to buy any lens, then try this Hack/Mod: (I didn’t test it)

My Helios

References – Lenses:

Let me first start with what I’ve found (by experimenting), then I will list some websites that I’ve read about this kind of Bokeh.

Photos

(experimenting using Helios 44M-4 mounted on Canon 5D classic)

Focusing at 0.6

Focus06-1

Focus06-2

Focus06-3

Focus06-4

Focusing at ~1

Focus1-1

Focus1-2

Focus1-3

Focus1-4

Focusing at 0.5 (no Swirl, or hardly noticed)

Focus05-1

Now, if you want to learn more I suggest you read these references that I’ve found while searching:

That’s pretty much it, after I had experimented.. I need to sleep..

Happy shooting! :)

The Lomography Petzval Portrait Lens

I can’t believe they are going to produce the Petzval Portrait Lens; IT IS ON IN KICKSTARTER.. AWESOME

I just backed it for $400 bledge, and seriously can’t wait to use it!

Specifications:

The Waterhouse Aperture System

The new Lomography Petzval Lens works using a traditional Waterhouse aperture system. With this design, your lens comes with a set of stops (also known as diaphragms). Each diaphragm is drilled with a hole of a different size; these sizes correspond to the f-stop or aperture. So if you’d like to shoot with f/4 aperture, you select the f/4 diaphragm and insert it into the aperture slot of your lens; if you’d like to shoot with a f/11 aperture, you select the f/11 diaphragm and so on. Here are the aperture options for the Lomography Petzval lens:

  • f/2.2
  • f/4
  • f/5.6
  • f/8
  • f/11
  • f/16
The Waterhouse Aperture System
The Waterhouse Aperture System

Lens Technical Specifications

  • Focal Length: 85mm
  • Maximum Aperture: f/2.2
  • Apertures: Waterhouse aperture set, up to f/16
  • Image Circle: 44mm
  • Field of View: 30 degrees
  • Lens Mounting Profile: Canon EF and Nikon F
  • Electronic contacts: No
  • Closest Focusing Distance: 1m
  • Focusing Mechanism: Gear Rack Focusing
  • Lens Construction: 4 Elements in 3 Groups
  • Filter Thread: 67mm
  • Max. Diameter x Length, Weight: 120mm x 85mm x 80mm (Please note: This is an estimate based on the first working sample)
  • Weight: 500g (Please note: This is an estimate based on the first working sample)

 

Excited, and Happy :D

Samples:

The bokeh is INSANE.

The project is Over here.