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Camera shake and image stabilization (Vibration Reduction)
When you are first buying camera equipment you see a lot lens with IS or VR designations on them. This is the image stabilization or vibration reduction. They mean the same thing except Canon uses the first term and Nikon uses the second. These are mechanisms built into the camera lens to avoid the "movement of the camera. "I will talk about how to get rid of camera shake and why I bought a VR lens for myself.
What is movement of the camera?
When you're holding the camera in his hands and looking through the viewfinder to take your photo, your body is making slight movements. It is a natural thing that your body is always the same for edit, move their muscles to help maintain balance. However, because slight movements of the camera. When the camera zooms in on a subject that is a reasonable distance, these slight movements become more noticeable.
For example. If your hand shakes slightly and turn your camera 1 degree of its line of address and the subject is 15 feet away, this would correspond to 3.1 inches are added in the direction of your camera on. Now they say that the movement of his hand when he took the picture happened while the shutter was open. This would blur the image on film or digital image.
How I can avoid my images blurry?
There are three ways to prevent this.
- Sure to have a fast enough shutter speed for your hand movements do not affect the image.
- Use a tripod.
- It has a vibration reduction lens or image stabilization.
Each of these methods have their pros and cons.
1. It has a fast enough shutter speed
Ideally, you want this thing every time. The rule of thumb is that you need a shutter speed of 1 on the focal length of your lens is set at. So if you is extended to the bottom with 300mm lens, you would like 1 / 300 second aspect of speed or higher (For 1 / 320 in the standard camera). In general, it is guaranteed (for the average user) the valve will not open long enough to make movements the visible hand in the final image if a steady hand to be able to get away with a slower rate. The catch here is the willingness to have enough light to expose your image. If half of a bright day you are fine. If it is darker than you might have to use a more sensitive film, but this will make your photo be grainy.
Note: When you see the lens face with the same zoom capability as a cheaper target, look at the maximum aperture for this purpose. Most likely to be much larger than the cheapest. F/2.8 is common. The lower the number, the greater the aperture can go. This means more light will rent in when you take the picture, so you will be able to have faster shutter speeds.
2. Use a Tri-pod
This is always going to work. Now you can have the shutter open as long as you want and the picture does not have any confusion (this is assuming that the subject is not moving or moving slowly). Tripods are fussy though. And definitely do not work in a lot of circumstances, especially traveling.
3. Use a lens with image stabilization or vibration reduction
It is "meet in the middle" as yet need a decent shutter speed, but will not need a tripod and cheaper than a fast lens. Inside the chamber there is a mechanism for adjusting glass lenses slightly to compensate for the movements of his hand. VR IS and give you a few stops shutter speed back. So if you can not get enough light to be 1 / 320 sec shutter speed as in the example above. VR allows you to go down to 1 / 125 sec (four full stops in ideal situations). Often, this will give you enough light to properly expose the image. VR and IS lens will cost extra, but still cheaper than buying the lenses quickly spoke up. Fast lenses usually do not have much ability to zoom (the limitation of having a grand opening).
The main article is an example of two images. One of them was taken without VR on and the other had VR. This is a photo taken at my house with my Nikon D70s with nikon 18-200mm vr.
To summarize. The solution is cheaper to buy a tripod, the second is to buy a lens with IS or VR, and the most expensive is to buy "fast" lenses. I am a casual photographer and use more to travel so that the RV has been the best option for me. If you find yourself with similar needs and want to eliminate the movement of the camera over your photos, then I would recommend looking at VR and IS lenses.
For more articles on the photograph of the author, please check out target = "_new"> www.thoughtsfrommylife.com / category Photography.
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** NIKON D70s PICTURES USING 18-70mm Kit lens – SLIDESHOW – MARCH 27th 2010 – DSLR CAMERA **
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