When you are buying a camera before you see a lot of lenses that have IS or VR designations on them. This is image stabilization or vibration reduction. They mean the same thing except Canon uses the first term Nikon uses the second. These mechanisms are built into the camera to prevent "camera shake". I will talk about how to get rid of camera shake and why I bought a VR lens for me.
What isCamera> Shake?
When you're holding the camera in hand and looking through the viewfinder to take the picture, your body is doing light movements. This is natural as your body is always correct itself and move the muscles to help maintain balance. However, it causes slight movement of the camera. When the camera is zooming on a subject that is a reasonable distance, these movements become more subtleevident.
For example. If your hand shakes slightly and turns the camera 1 degree off its lines of direction and the subject is 15 feet away, which is equivalent to 3.1 inches being added in the direction of the camera on. Now say that the movement of your hand happened when you took your photos and while the shutter was open. This will blur the image on film or on your digital image.
How to Prevent Blurring from My Pictures?
Thereare 3 ways to prevent this.
Make sure you have a fast enough shutter speed so that the hand movements do not affect the image.
Use a tripod.
Having a goal of reducing vibration or image stabilization.
Each of these methods have their pros and cons. 1. Having a fast shutter speed Enough
Ideally, you want this situation every time. The general rule is that you need a shutter speed of 1 over the entire focal length is set to its target. So if you arezoomed all the way with your 300mm lens, you would like 1 / 300 second shutter speed or better (ie 1 / 320 on the standard camera). This usually guarantee (for the average user), the shutter will not be open long enough to make hand movements visible on the final If you have a steady hand you will be able to get by with a slower speed. The catch here is the desire to have enough light to expose your photo. If the center is a bright day you are fine. If it is darkermay need to use a more sensitive film, but this will cause the image to be grainy.
Note: When you see expensive lenses with the same capacity as a zoom lens cheaper, look at the maximum aperture for this lens. It is likely that it will be much larger than the cheapest. F / 2.8 is common. The lower the number, the more open it can go. This means that more light will get when you take the photo, and will be able to have more shutterspeed.
2. Use a Tri-Pod
This will always work. Now you can have the shutter open until the want and the image will have no blur (this is assuming that the subject does not move or moves slowly). Tripods are bulky and annoying anyway. And certainly do not work in many circumstances, especially on the road.
3. Use a lens with image stabilization or vibration reduction
This is "meet halfway" approachyou still need a decent shutter speed, but you will not need a tripod and its cheaper than a fast lens. Inside the room there is a mechanism to adjust the glass lenses slightly to compensate for movement of your hand. IS and VR will give you a shutter speed a few stops back. So if I can not get enough light to be 1 / 320 sec shutter speed, as in the example above. VR let you go up to 1 / 125 second (4 fixed points in ideal situations). A lot of times, this will give you enoughlight to properly expose the image. VR and IS lens will cost more but are still cheaper to buy fast lenses I mentioned above. Fast lenses usually do not have much ability to zoom (a limitation of having such a great opening).
The main article is an example of two images. One was taken without VR on and the other had VR. This is a picture taken at my house with my Nikon D70s with 18-200mm VR Nikon.
To summarize. The cheapestis 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 photographer and occasional use it more for travel in VR was the best option for me. If you find yourself with similar needs and want to eliminate camera shake more than your photos, then I would definitely recommend watching VR and IS lenses.
For more articles on this photo page, please checkwww.thoughtsfrommylife.com / Photography category.
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