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An important aspect of the photographic vocabulary, produced by focus selection, limitations of depth of field, optical qualities, subject motion, camera motion, or other technical problems.

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33
votes
12answers
6k views

How can I take shallow depth of field photos with a point-and-shoot camera?

I have a compact digital camera, and in macro mode I can manage to achieve a blurred background, if the background is far enough away. Can this be done when taking non-macro pictures, and if not, is ...
34
votes
15answers
6k views

How can I maximize the “blurry background, sharp subject” (bokeh) effect?

I know that this effect occurs when there's a shallow depth of field. My question is, what are the various ways I can increase this effect in my photos when I'm taking them? Note that I'm not ...
15
votes
6answers
5k views

How does background blur (bokeh) relate to sensor size?

This is a somewhat theoretical question. Suppose I first take a photo of a subject using a full frame sensor DSLR, with a given lens (say 50mm prime lens at f/3.5). Now suppose I exchange the camera ...
13
votes
3answers
3k views

What equipment and settings do I use for panning shots of moving objects?

How do you go about getting great panning shots of things like cars and bicycles so that the background is nice and blurred but the target is sharp as can be. I have tried on many occasion to do ...
12
votes
4answers
2k views

Where does the ¹/shutter speed = focal length rule for hand shake come from?

The generally accepted rule of thumb is that the shutter speed must be the same or larger than the inverse of the focal length. As is, it seems that it makes no sense as is: On a 24 Mpixels ...
12
votes
2answers
2k views

How can slightly blurred photos be improved in post processing?

I have heard quotes which say "If its not good, delete it." I go by that advice, but sometimes you capture some precious moment but you see that photo is slightly blurred because of camera shake. I ...
7
votes
5answers
1k views

What are the benefits and costs of an image stabilized, slower lens vs a non-IS faster lens?

I am going thru a trade off decision between a 24-70 f2.8 lens and a 24-105 f4 IS lens from Canon. My dilemma is that the 24-105 focal length better matches my needs, but the f2.8 would occasionally ...
5
votes
4answers
580 views

How was this blurry background, sharp motorbike effect achieved?

In this photo nominated as Canon Australia Photo of the Week, the background seems to blur while the rider is sharp. Wouldn't this normally be the other way? How was this done?
13
votes
1answer
2k views

What's the difference between Bokeh and Gaussian Blur?

I have heard multiple times in photography, the words Bokeh, and Gaussian Blur. To me, it seems that the words are used almost interchangeably, but in some instances, I have heard them contrasted. ...
6
votes
2answers
3k views

How can I take a photo with everything in focus with my DSLR?

I am quite new to DSLRs and one of the first things I noticed was the incredible focus points and depth that you can achieve. That is great in a lot of scenarios, but not in all. When filming a ...
17
votes
2answers
2k views

Why is image stabilisation making images unsharp?

During vacations and travel I tend to use my Nikon D90 and a 18-200 VR (image stabilisation) lens. I was very annoyed (and had no explanation) when I found images to be unsharp, which had be made in ...
3
votes
4answers
22k views

How can I fix an out-of-focus blurred photo in Photoshop?

How can I fix this picture? Somebody else took this picture and well he wasn't able to do it very well, and it's blurred. I have photoshop
15
votes
3answers
3k views

Can software auto-detect image focus?

I was wondering if there was any photo management software out there that could auto detect and "rate" images on how in focus they are. This comes up for me quite commonly when i am looking through a ...
8
votes
2answers
670 views

How can I “focus peak” a photograph?

Does an application exist where I can input an image and then the application indicates what parts of the image are in focus? I imagine it as a sort of post-process focus peaking.
11
votes
8answers
1k views

How can I prevent blurred images when using a tripod?

I'm doing panoramic HDR photography for work using one of those stupid cheap mirror balls mounted on a tripod (not my decision!) and I am noticing on my longer exposures that sometimes I'm getting ...
7
votes
2answers
348 views

Real-time vs post-production blurs — what's the difference?

I've always been a huge fan of blurry photos, I guess in part because almost any camera is able to take blurry photos, though some better than others. What's the difference between real-time and ...
-2
votes
4answers
548 views

What causes blurred/non-sharp images taken of stable objects?

I know about two important reasons which are motioning or shaking camera/hands and dust and dirt on you lens but if you have fixed them and still you have blurred/non-sharp results, what can be the ...
21
votes
3answers
2k views

Why would one shoot a fully blurred picture?

Focus and blur have a reason in a picture when they come together. Blur alone is just a loss of an important element in the photography art, unless it has a reason, like obscuring nudity or creating ...
6
votes
3answers
8k views

How does Photoshop CS6's deblur feature work?

This video shows a sneak peek of a new Photoshop feature for Creative Suite 6, called 'deblur', which is able to take a blurry image and make it sharper: http://www.youtube.com/watch?v=xxjiQoTp864 ...
10
votes
2answers
943 views

How to stop a high F number from appearing blurry?

I have been out taking some evening photos (just after sunset) and I have noticed that in a number of instances the higher f numbers ( 14+ ) are appearing more blurred than the lower f numbers ( < ...
6
votes
3answers
709 views

How can I achieve this effect, where the flower is sharp and everything else is blurry?

I was wondering how it is possible to take a picture like this. Please have a look here for some example pictures. The flower is sharp, and everything else looks like taken with a long shutter. Is ...
2
votes
5answers
2k views

How can I get non-blurry gymnastics pictures with my entry-level DSLR?

I have a Nikon d3100 with 18-55mm and 55-200mm lenses. My issues are the lighting and the shutter speed for fast moving objects. My aperture is set to f/3.5, shutter at 1/1000th of a second, and ISO ...
1
vote
5answers
5k views

Is it possible to re-focus (recover) an intentionally blurred image?

I have an image which I have modified through Picasa ( using Soft Focus - essentially I am making the faces blurred ). Question is : If I upload that photo to Facebook, and a user downloads it from ...
6
votes
1answer
2k views

Is there a theory behind 'Blur Detection'?

I am trying to implement a blur detection algorithm for my imaging pipeline. The blur that I want to detect is both - Camera Shake: Pictures captured using hand which moves/shakes when shutter ...
2
votes
1answer
825 views

Blurred images with Canon 1100D

I have a Canon 1100D which I bought last year. The Image quality used to be good. Recently I have noticed that the images are fairly blurred. Even if I use short shutter, stable base for the camera ...
2
votes
4answers
434 views

What is the best setup for shooting sports at night with a point & shoot camera?

I always try to take good photographs in soccer matches or in races at night, not using flash, and I have always the same result: too much blurred photos. I don't have an SLR, but I'm sure that's not ...