15
votes
Accepted
Is this "tack sharp with blurred background" look done with Photoshop?
No photoshop necessary for that background. That's simply what happens when shooting a telephoto lens, f/2.8 or larger, and having the subject closer to the camera and much further from the background....
- 20.5k
15
votes
Accepted
How to do smoky bokeh
The non uniformity of the bokeh leads me to believe that the background has been Photoshopped. Exactly how it was done is anyone's guess - but the sharp lines through the bokeh may indicate a liquify ...
- 20.5k
13
votes
Accepted
Is there any Photoshop effect that can create vertically distorted bokeh as one sometimes sees in film and video?
I was always wondering if theres anyway to get bokeh that looks something like this (vertically distorted bokeh).
This vertically-oval bokeh is the result of an anamorphic lens, which "squeezes" an ...
- 32.3k
11
votes
Accepted
Maximizing bokeh in the foreground?
From the other question:
Here's the list of things that influence depth of field the most (in
this particular order):
Subject distance, the closer the subject is, the shallower the DOF
(think of ...
- 549
11
votes
Accepted
What can cause double-vision effect in slightly out of focus areas?
A cheap filter (uncoated or poor coatings) can reflect some of the light which is always reflected off of the front element surfaces.
The primary reflection (blue in the drawing) will be stronger than ...
- 14.8k
10
votes
Besides mirror lenses, what can cause ring-shaped bokeh?
The doughnut bokeh of catadioptric ("mirror") lenses is not caused by the rear mirror or long focal length, but by the obstruction (front mirror actually) on the front element.
You can achieve it ...
- 6,010
10
votes
What is the bokeh difference between 1/2.3" f/0.95 cell phone and 1" f/1.8 compact camera?
You appear to be seeking to maximize the amount of background blur. Factors that increase background blur are:
Distance to subject (closer)
Distance to background (farther)
Focal length (longer)
...
- 26.9k
9
votes
Accepted
Scratchy bokeh - do I have a problem with my lens?
In trying to take a suitable image to use as a full example, I removed the UV filter I have on the end to act as protector - problem apparently solved.
Lesson learnt: cheap glass is cheap for a ...
- 311
9
votes
Accepted
Besides mirror lenses, what can cause ring-shaped bokeh?
This bokeh effect is known as (soap) bubble bokeh. Along with a "glowing" look, this type of bokeh is seen in lenses that have over-corrected spherical aberration. It is associated with Cooke Triplet ...
- 26.9k
8
votes
Why does electronic first curtain shutter affect rendering of blurred backgrounds?
The reason for the phenomenon is that at wide apertures in good light necessitating a fast shutter speed, most of the exposure is coming from a very narrow traveling slit between the first and second ...
- 6,598
7
votes
Why do out of focus elements in a photograph increase in apparent brightness?
I assume you mean the "bokeh balls" phenomenon, where out-of-focus highlights become large, bright circles:
The answer to this is simple: the non-bright areas are also diffused into large circles, ...
- 143k
7
votes
How can I take pictures with extreme bokeh with an in-focus subject nearby?
For the first photo example: Longer focal length and/or wider aperture are needed. 50mm and f/2.8, especially if used on an APS-C camera, won't give that kind of bokeh that close to the focus distance....
- 175k
7
votes
What is the cause of inclusions in my bokeh?
Probably the dots are dried water specs.
Definitely the unsightly rings are from the glass polishing process.
Zeiss Batis 2.8/135
See this Imaging-Resource article: "The end of onion-ring bokeh? ...
- 1,813
7
votes
In photo taken with a prime lens, what is the cause of the "zoomed" bokeh appearance?
This is just an educated guess that I've never tested or seen specifically tested with lenses that have been highly corrected for field curvature and astigmatism, which are intimately related.
Most ...
- 175k
7
votes
What affects DOF more...distance to subject or focal length?
Here is the standard Depth of Field formula for reference:
DOF = 2 u2 N C / f2
N = aperture F-number
C = circle of confusion
u = distance to subject
f = focal length
When aperture and subject size ...
- 26.9k
7
votes
Accepted
This photo has light dot bokeh in front of the subject, seemingly coming from the sun. How was this done, or how can the effect be achieved?
A bit of black-belt Google-fu & Google Translate found the definitive answer, from the photographer themself.
It's an in-camera double exposure (proving my original theory wrong;)
It was so ...
- 23.1k
6
votes
How can I maximize the "blurry background, sharp subject" (bokeh) effect?
To increase the effect of "bokeh blur" with thin depth of field, there are a number of things you can do in-camera.
Obviously, opening up your aperture wider will decrease depth of field, but moving ...
- 51.4k
6
votes
How is a lens's bokeh determined by its construction?
For the most part, there is no way to predetermine the quality of a lens's bokeh simply by looking at its construction, and even if you look at sample images you may be flummoxed, because the quality ...
- 51.4k
6
votes
How to prevent "cats eye" bokeh?
Use a lens with a narrow enough field of view that the entire entrance pupil is visible when viewing the front of the lens from the anywhere within the field of view captured by the camera. Lenses ...
- 175k
6
votes
Accepted
What causes this 'bokeh crop' effect?
It's often called "cat's eye" bokeh. Most often it is seen in fairly wide angle lenses with very wide apertures.
"Cat's eye" bokeh is the result of using a very wide aperture lens where the entire ...
- 175k
6
votes
Will 50mm f1.4 and 85mm f1.8 lenses produce the same bokeh, given the same framing?
if i go with Sigma 50mm F1.4 art and use it at F1.4 and shoot the subject from lesser distance than 85mm f1.8 (keeping the same field of view and frame) does 50mm f1.4 will produce the same or more ...
- 175k
6
votes
How do I obtain sharp images on full body portraits?
If you want more depth of field in your subject, stand further away, &/or close the aperture.
The added distance will mean the 'percentage' of distances from front to back of your subject will be ...
- 23.1k
6
votes
Does it make sense to buy a Sigma Art f1.4 for a crop sensor body?
However, if I understand correctly the aperture need to be multiplied as well, which results in an f2.1 and means I am losing at least an f-stop.
In short: No.
If you use a FF-lens with an APS-C ...
- 292
6
votes
Prime lens is over-exposed fully open, when in full daylight
If you're already at your maximum shutter speed, and your lowest ISO, and you don't want to reduce your aperture, then you might try adding an ND filter. Or wait for (or create) lower-light conditions....
- 5,138
5
votes
Is there any Photoshop effect that can create vertically distorted bokeh as one sometimes sees in film and video?
This effect is due to the image (likely a motion picture frame being shot with an Anamorphic Lens, which "stretches" the widescreen image to fit a normal 35mm frame. When the film is projected, a ...
- 565
5
votes
Is there any Photoshop effect that can create vertically distorted bokeh as one sometimes sees in film and video?
The oval bokeh is caused by using an anamorphic lens.
- 8,504
5
votes
Which will produce a shallower depth of field: 50mm f/1.7 or 70-210mm f/4?
Depth of field calculation depends on multiple factors:
captor size
focal length
aperture
and last but not least: subject distance
Using a Depth of field simulator (http://www.dofmaster.com/dofjs....
- 4,163
5
votes
Does it make sense to buy a Sigma Art f1.4 for a crop sensor body?
You will never lose any transmission stops (low light ability) using a smaller sensor, unless something behind the camera mount severely constrains what reaches the sensor (unlikely with general ...
- 7,182
4
votes
How can I maximize the "blurry background, sharp subject" (bokeh) effect?
Here's how to make the background as blurry as possible while keeping the subject sharp.
It’s the contrast between a sharp subject and a very blurry background that makes this effect stand out. ...
- 143
4
votes
How can I maximize the "blurry background, sharp subject" (bokeh) effect?
Depth of Field (DOF), background blur, and bokeh are related, but different concepts. There is also subject-background isolation/separation.
Depth of field is based on focal length, aperture, ...
- 26.9k
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