Posts Categorized: Photography Equipment
In the overall history of camera technology image stabilization is a rather recent development. Image stabilized lenses did not appear up until 1995 when Canon introduced the EF 75-300mm f/4 – 5.6 IS - the first image stabilized lens. IS or Image Stabilization is the acronym that Canon uses to refer to this technology. The technology was actually first seen on a previous lens, also made by Canon, the EF 300mm f/2.8L IS USM. This lens however did not reach the market up until 1999 which made the 75-300mm the first commercially produced image stabilized lens the world has seen.
Nikon calls this technology VR or Vibration Reduction. Other manufacturers use different other acronyms to label this technology. However, at the end of the day, they all mean the exact same thing. Though, in this case it is fair to say that all technologies are not the same. In fact all lenses are not optically stabilized either. There are some manufacturers who prefer to stabilize the sensor inside the camera rather than the lens! This happened because when image stabilization was developed digital sensors were not around and it would have meant either moving the physical film or the sensor. Canon and Nikon devised it was much easier to move the focusing elements inside the lens than moving the actual film.
Okay. Now we need to have a deeper understanding of how image stabilization works and why most professional and serious enthusiasts prefer to pay more for image stabilized lenses. Read more...Congratulations on buying your first DSLR! Now you are well and truly on the road to photographic nirvana! Your DSLR is a very powerful tool for making images. With it you can control the amount of light reaching the sensor, thus, allowing you to balance an exposure, pursue creative ways to express yourself through your images and in essence capturing more than just light inside the small box. For all practical reasons a DSLR is the only camera you will ever need.
But there are more to good compositions than just the camera. A good composition involves not only a good subject matter or a moment but also good light and of course clever use of all the elements to put together an image. Literally, you don’t take an image, you make it.
Good light is unfortunately something which is not within the control of a photographer. However, if you are really good with a camera and have an astute sense of lighting, you will be able to make better use of the available light than most. But even the most experienced photographer, at times, require additional lighting tools to fine tune a composition. In this article we shall be looking at one such tool - speedlight or an external flash.
Read more...Neutral density filters are primarily used for balancing exposures. By balancing exposure, I mean adjusting the amount of light that enters the lens so that the scene appears uniformly lit across the frame and every inch of it is exposed properly. A properly balanced image will show a histogram that is clustered more towards the middle of the graph. Too much on the right and you have an over-exposed image and too much on the left means you have under-exposed.
Technically speaking, an under-exposed image is better than an over-exposed one, because you would still be able to salvage some details from an under-exposed image. You would need to shoot in RAW for that. However, getting the exposure correct in-camera is the best option by far.
The reason these filters are called as neutral is because they stop light across the spectrum equally, without any bias. Consider them as shades for your camera lens.
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