bokeh

creating foreground bokeh effects in-camera

The closer you move to a foreground object, the more it’s shape and color and opacity will affect the image … in unpredictable ways. It’s a well-established technique then to create unusual color splashes and shapes in the image by creating flare highlights. It is often called “foreground bokeh effect”.

Ulorin Vex is an unusually photogenic model that I have photographed on a few occasions. When Ulorin visited the East Coast again recently, I jumped at the opportunity to meet up with her again and play in the studio. Her striking looks and colorful latex dresses would work perfectly with this technique – the random kaleidoscope patterns and colors wouldn’t be incongruous.

With a standard lighting setup in the studio, using a beauty dish, I also added an extra light to throw light directly towards the camera. I then held up various colored objects right in front of the lens – a colorful translucent plastic flower with colorful petals and leaves worked best. Shooting through an opening between the petals and leaves of the decorative plastic flower, all kinds of interesting random patterns appeared. It was unpredictable, and that is what made the effect interesting in part – you wouldn’t quite know what you’re going to get.

If this effect appeals to you, it would make sense to collect all kinds of objects to try out – glass elements and prisms work well too. Anything that will create a pleasant visual surprise.

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bokeh comparison: Sony RX1 vs Nikon 35mmm f/1.4G

Sony has been on fire recently with their new camera releases. The Sony RX100 (B&H) is arguably the best point&shoot on the market right now. The full-frame Sony A99 DSLR has been getting great reports … and then there is the new Sony RX1 (B&H) - full-frame goodness in a compact camera with a fixed 35mm f/2 lens.

And just in anyone has missed the crucial news – Sony cameras use Zeiss lenses. The word “legendary” is usually automatically associated with the word Zeiss.

A quick summary of what makes the Sony RX1 unique:

The full-frame sensor promises excellent high-ISO noise performance, and the Zeiss optic promises stellar performance from the lens. With that, there’s been a lot of buzz about this camera … and I have one in my hands.

So far, I am hugely impressed with this camera. The build quality is solid. It has a certain heft for such a small camera. The lens is incredibly sharp. (More about that later.) The 1/3rd stop indents on the lens smoothly click into position. This camera just speaks “quality!” Even the lens cap that clips on solidly, is made of metal!

Instead of a breakdown of the specs though, I thought it might be more interesting to look at one specific aspect of this camera & lens – the bokeh of the lens.

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photo session – Jess B – various 85mm lenses

A fast 85mm lens is an essential addition to any camera bag, whether an f1.8 or f1.4  or even an f1.2 aperture. With their shallow depth of field, and the pleasant perspective for portraits (when not used with a super-tight composition), these lenses will have your subject just pop from the background.

Jessica and I are busy with a new project – testing various 85mm lenses – specifically for how their bokeh appears in comparison. It is proving a tad more difficult than I had hoped for to show when poor bokeh is truly distracting, and when a lens with great bokeh is immediately superior. But then, the deep-freeze temperatures here recently hasn’t helped us either in scouting for locations. But we’ll still get there. (So this is not the comparative review yet.)

In the meantime, I wanted to show a few images off. They were all shot at wide apertures, using only the available light wherever we were.

The photograph above was taken on the steps inside a train station, using only the available light streaming in. In posing Jessica, I made sure that the direction of light made sense in creating open light on her face.
1/250 @ f1.4 @ 800 ISO
Canon 5D mk II (B&H);  Canon 85mm f1.2 II (B&H)

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creating a background with narrow depth-of-field & great bokeh

I met up with my favorite model Anelisa yesterday in New York, specifically to shoot images for a more extensive review of the Nikon 85mm f1.4G AF-S lens. And then it struck me how pointless it is in a way. This is truly a superb lens. It improves on the legendary Nikon 85mm f1.4 AF-D lens in some key areas. (For me the updated lens was an immediate upgrade.)

But ultimately, you could get similarly beautiful images with any short portrait lens that gives you a very narrow depth-of-field AND has great bokeh. (Just to reinforce that again .. narrow DoF and bokeh are not the same thing. But I digress.) So, whether you’re shooting with a Nikon 85mm f1.4 lens (B&H), or the Canon 85mm f1.2 (B&H), or Canon 85mm f1.8 (B&H) … these images are easily attainable. It is more about the technique and thought-process and approach, than any specific piece of equipment. However, you do need photo equipment that enables you to achieve what you want to, technically and stylistically.

So walking around with Anelisa, looking for great backgrounds I saw this fantastic Art Deco styled exterior of a diner. And I knew that with the various colors and shadings in the late afternoon, it would give beautifully colored reflections at various angles. Here is the pull-back shot …

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bokeh – a few notes

October 26, 2010

bokeh – quality of lens blur

The way that a specific lens renders the out-of-focus areas in the background (ie, the bokeh of the lens), is always an interesting aspect of any lens’ behavior. If the out of focus areas show hard edges, or highlights with a kind of double edge, then the bokeh can appear intrusive. Then it is called harsh bokeh. If the out of focus areas are smooth without the edges being defined, then the bokeh is described as being pleasant. And then on occasion, you get bokeh that is … well, let’s just call it ‘interesting’.

I noticed that the Nikon 105mm f2.8 VR macro (B&H) can at times show a weird circular swirl in the background. It is especially noticeable if there are bright out of focus highlights. The photo at the top shows this clearly, even with a background that should appear smooth. In comparison, we can see how the famed Zeiss Makro-Planar T* 100mm f/2 ZF (B&H), renders the highlights. Smooth. Just as you’d expect from a lens with such a reputation.  (Both images were shot at f2.8 although the Zeiss is capable of f2 which is exceptional for a 100mm macro lens!)

Just for interest here, I thought of showing how a few other lenses compare in how they render the background …

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shallow DoF / depth-of-field is not the same thing as great bokeh

The first thing you might notice in this image is our super-cute model, Johannie.

Next you will probably notice either:
- the strange background pattern, (due to this lens’ bokeh),
- or the wafer-thin depth-of-field of the Nikon 50mm f/1.4D used wide open
- or the lighting on her, (a reflector),

These are all inter-related in some way for this photo …

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bokeh – the quality of blur

Bokeh is the term used to describe the quality of background blur in a photo,

i.e. how pleasing the blur looks of the background areas. Since the softness of the background blur is usually more important than how the foreground items are blurred, bokeh usually relates to the background blur.

The bokeh of a lens is influenced by numerous factors, including
- the lens design,
- specifically, how spherical aberrations are corrected,
- the number of blades in the aperture mechanism,
- focusing distance,
- the actual aperture used will also affect bokeh to some extent,
- the distance of the out-of-focus objects,
- and in the case of the Nikon DC lenses, by how certain aberrations are selectively introduced.

Bokeh is usually described as being subjective, and it largely is.  However, when you’re able to recognize the difference between good bokeh and poor / harsh bokeh, then it becomes less subjective I believe. When you see good bokeh, you’ll recognize it. Same with bad bokeh.

To illustrate how good bokeh appears, and what poor bokeh looks like, I had set up this simple shot.

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