Hot answers tagged motion-blur
17
Stars move. Like with any other movement, what we care about is how much they move on the sensor during exposure: A movement that occurs only within a single pixel is not a movement the sensor can capture, i.e. the movement appears frozen.
But when movement takes a point across several pixels during the exposure, it will be visible as movement blur, in this ...
10
A sufficiently fast shutter would do it, but that also may very well not be a satalite photo. Google maps also uses arial photos and the detail of the plane in the photo seems too high and the plane too large in comparison to the ground for it to be taken from space. My guess is that the photo was taken from another plane, probably moving in a similar ...
8
Do the math. Let's say the plane is moving at 200 MPH, which is a plausible value right after takeoff or right before landing. Note that the flaps are extended, so one of these is the case.
200 MPH is 89 m/s. There is some blur. I'd say about 250 mm or less motion of the plane during the picture is about the limit that picture is showing us. That would ...
7
The rule of 600 states that to 'eliminate' star trails the exposure time in seconds should be 600 divided by the focal length of the taking lens. 20mm lens could go to 30 seconds, 300mm lens could go to 2 seconds.
Of course (like any motion blur) you will never eliminate star trails- you merely reduce the trail to an acceptable level for a given ...
6
A short shutter-speed is needed to freeze an object in motion. The faster the object, the shorter the shutter-speed you need. It also depends if the motion is close or far and its direction, so we cannot tell you exactly how fast a shutter-speed is needed.
When buying a camera, you can look for the maximum shutter-speed of the camera. That lets you know how ...
6
The effect you are going for or story you want to tell with your photograph will play a big part in what shutter speed/depth of field you use.
If you are photographing a Formula 1 race you might want to show the cars as a blur against the stands. In that case you want a slower shutter speed.
If you want to highlight the loneliness of a batsman at the ...
6
If you don't understand aperture and shutter speed, and don't want to learn, and the other answers are already too technical for you, then there are a few simple things you can try.
Your camera has several "Scene" modes.
Sports mode - this will anticipate that you are shooting something moving, so it will select as fast a shutter speed as possible to ...
5
Ignoring artificially increasing the light (flash, bounce cards, etc):
Exposure = Shutter + Aperture + ISO
You only factored in shutter and aperture. Your best bet at this point is to shoot RAW and increase ISO as high as you can tolerate. Depending on your camera, this may be anywhere from ISO 800 - ISO 12800. You can always try to reduce the noise later ...
4
SmartDeblur 2.0 is a free program providing 4 distinct methods for restoring defocused / blurry pictures:
Automatic parameters settings:
Blind Deconvolution Deblur
Manual parameters settings:
Out-of-Focus Blur
Motion Blur
Gaussian Blur
A bit slow in the Automatic Deconvolution processing phase (1-3 minutes, depending on original);
subsequent ...
3
Provided that the subject is in focus, two things can cause (motion) blur:
Shake/vibration of the camera
Holding your camera with a solid, steady pose will reduce the vibration. Choosing a high shutter speed will also reduce or even eliminate the blur caused by such vibrations.
Movement of the subject
A high shutter speed is required for crisp photo ...
3
This rule applies to the shutter speed you should use when taking photographs of the night sky. The rule is as follows:
When using a lens of focal length L to take a long exposure photograph of the night sky (with a stationary camera), the maximum shutter speed you should use to avoid blurring of the stars is 600/L seconds.
For example, if using a 300mm ...
2
If increasing ISO leads to unacceptably noisy images, you can also upgrade your equipment carefully. A fast lens in the f/1 to f/2 range can take in more light at the expense of shallower depth of field. A camera body with a larger sensor size (such as a 35mm sensor) will capture more light and so (typically) go to higher ISOs with less noise. Powerful ...
2
As AJ Henderson has said, a fast enough shutterspeed is the answer.
To put some numbers onto it - shooting at an airfield, if you have a King Air 350 coming in to land, you want your shutter to be around 1/320s or slower for propeller spin in the image, as otherwise you freeze the propeller in mid air.
A propeller also spins quite quickly so freezing a ...
1
What setting is needed to click blur moving object and also clear fast moving objects?
The setting you want to change is the shutter speed. This can usually be accomplished by putting your camera in a shutter-priority mode. You set the shutter and the camera figures out the rest.
As the shutter speed goes up, so does how much you stop motion.
1
As others have mentioned, to prevent blur, you want a fast shutter speed. However, when looking for a camera, this is not actually a big issue - even my ultra-low end Sony a390 supports shutter-speeds of 1/4000, which is more than fast enough for most common moving objects (I'm assuming that you're not taking pictures of bullets mid-air)
The real issue ...
1
The biggest thing is going to be shutter speed hands down. Without a fast shutter, it is going to be impossible to stop the motion in the scene. That said, there is still other factors that will help make a good quality photo at high shutter speed. A good autofocus that can follow a moving subject is critical unless the movement is going to be along the ...
1
Addressing the depth of field question: with a 200mm lens, unless you are quite distant from the athletes, you should be able to isolate them from the background. And unless you are very close, you should have sufficient depth of field at f/5.6 or f/8 to easily get them in focus.
With a 200mm lens at f/5.6
at 20 meters, you'll have 2 meters depth of ...
1
Ok lets examine your problem. Your pictures are too blury. if your camera is capturing your picture 1second, and if during that 1 second yor subcet moves, that move is going to captured by camera, and your subject is going yo be blured. Logicly, if you don't want this effect, you need to increase your shutter speed. So lets set our shutter speed to 1/50 ...
1
Controlling the vision quality is the same as for photography - your lens will impact the FOV and the image quality in how focused it will be in F/1.4, glares (coating on the lens). The cheap computar and fujinon lenses have a nice price, but they have a lot of glares and cannot really focus at F1.4. Schneider, Azure and Kowa are much better in terms of ...
1
Point Grey are the go-to people for robotic & industrial vision cameras.
Basically you're looking for a camera with a high sensitivity, so that it makes the most of available light. A large sensor size, a CMOS sensor (instead of CCD), and a lens with a low f-number (bigger aperture) are all indicators of better sensitivity.
These factors are, however, ...
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