Showing posts with label Canon. Show all posts
Showing posts with label Canon. Show all posts

Thursday, 2 February 2012

Canon Lenses - Canon Telephoto Lens VS Canon Normal Lens

What's the difference between a Canon Telephoto Lens and a Canon Normal Lens? This discussion is important to your knowledge of digital SLR cameras and the lenses that go with them. But not only that, it is also important to know which lens will serve you best in a given situation. Let's face, some folks buy a Canon digital SLR and never take the kit lens off. Nor do they ever switch it off of the Auto mode (but that discussion is for a different day). If you are going to improve as a photographer, it is incumbent upon you to know the capabilities of your camera and the lenses and equipment that goes with it. A Canon normal lens is usually one of 35mm or 50mm, with 35mm being the focal length that most closely matches what can be seen by the human eye without any enhancements. Since the days of 35mm film photography, this has been a normal lens. More recently, digital photographers have been using the 50mm lens also as a normal lens. But this also comes with an explanation. Full frame cameras, such as those in the Canon "Mark" series have a sensor that produces the same size photo as a 35mm film camera. But there are other digital SLR cameras that have smaller sensors. These are APS-C sensors, and they produce images that are magnified when compared to the full-frame sensors. In fact, they are magnified by a factor of 1.6x. With one of these cameras (a Rebel is a good example), a 50mm lens acts like a 80mm and is no longer normal. Likewise, a 35mm is more like a 56mm, which also stretches the "normal" definition.

Telephoto is somewhat easier to explain and understand. A Canon telephoto lens is one that magnifies the image so that it appears larger than what the human eye can see when standing in the same spot as the camera. Basically, anything longer than 50mm is telephoto. In the case of a crop sensor (APS-C) camera, 50mm is now telephoto, because, remember, it acts like the equivalent of 80mm.

Canon telephoto lenses are considered medium telephoto up to about 200mm, after which they are super telephoto.

By the way, it was once common that a lens was as long as the focal length designation. For instance, a 200mm lens was physically 200mm long. Now, due to the way the sections of glass are built into the housing of the lens, it is not longer necessary to them to be that long. This is quite obvious when you look at some telephoto zoom lenses that do not physically extend when the focal length is increased.

Speaking of zoom, there are many very popular Canon telephoto lenses that zoom in between focal lengths. And some even zoom from wide angle to telephoto (passing through the "normal" range as they do).

Now that you know what the difference is between the types of focal lengths, you need to decide which focal length is best suited for your photography needs. Or, perhaps a zoom lens is best so that you can cover a dynamic range of focal lengths as the needs change.


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Monday, 5 December 2011

Canon EOS Vs Nikon Is A Great Competition

Canon EOS vs Nikon is a great competition. These two manufacturers have been trying to make the better product for many years. This has help to make these products the best that they can be, and there are many aspects of each of these cameras that make them the best. Canon EOS versus Nikon is a competition that will remain with many of the new products and their devotees. These companies have worked hard to ensure that their products are competitive, and the market has affirmed their efforts. These two manufacturers are now neck in neck for total sales of their offerings.

Canon EOS was first introduced in 1987, and this auto focus MM camera is still in production today. There are a number of things that this camera offers to the market, and many people enjoy the quality that it provides. One of the most dominant features of this product is that there is no linkage between the lens and the camera. All of the focusing takes place in the lens itself.

The flash system is another thing that this camera is renowned for. Innovations have been steadily applied to this product, and competition ensures that they will continue to be made. The flash system features an auto focus system that uses infrared pre-flashes to gauge the distance from the subject.

Another great thing about these products is the eye controlled focusing that they feature. This revolutionary application uses the eye movement of the operator to ensure picture quality. This is an incredible application for sports and other events that require high speed focus.

Canon used to have more than 50% of the market, but now it generally shares this market with Nikon. Both of these companies have approximately one third of all sales for these types of products. Nikon is known for the innovation and quality programs that it works hard to increase.

Nikon has embraced the technology that was first introduced with the electronic focus lenses that became dominant in the early 1990's. Though it took this company some time to do this, it has gradually caught up with some of the industry's leaders. They have gradually improved their F series products, and their market share has steadily increased. These cameras originally relied on manual focus, but as the producer realized consumers preferred auto focus models, they quickly adapted to meet the changing market requirements.

The F series cameras were developed to compete with the other models that were outselling their products. Original products relied on auto focus, but in the late 1980's auto focus models became popular with consumers. Many photographers abandoned the slower manual models, and it took some time for Nikon to gain the market share that they had lost during this transition period.

Canon EOS vs Nikon is a great competition. These two companies have worked hard, and they are currently the industry leaders in the sales of these types of products. Market share is nearly equal, and these companies both account for over 2/3 of all the sales of this type of the auto focus 35 mm camera.

Finding information on Canon Eos Vs Nikon is not hard when you know where to look for them. If you are considering to read more about Canon Eos Vs Nikon, review the information available here to find out more.


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Friday, 18 November 2011

Canon Mid-range DSLR Cameras - Canon 7D

When talking about which category a particular camera falls into, you have to know that there is some discrepancy. One person's view of Canon mid-range DSLR cameras may not be the same as another's. However, for everyone, the Canon 7D definitely qualifies.

One of the qualifying factors includes a price tag of just over $1000 for the body only. Most of the entry-level models will come in at under a grand, and some will be far less.

So, when comparing models, what is it that you get for this higher price tag?

*For one thing, you will get a faster burst rate. In this case, you can take up to 8 frames per second as opposed to 5.3 frames per second with the Canon 60D and a paltry 3.7 frames per second with the T3i.

*Another very handy benefit is the dual image processors. With two processors, the camera can handle jobs much faster and more efficiently.

*Body construction is also much better with magnesium alloy material for the entire camera body. Lower models in the line-up use a polycarbonate plastic material.

*100% field of view through the viewfinder compared to 95%.

*Purchasing the kit, you will get a better lens in the Canon 28-135mm f/3.5-5.6 IS rather than the 18-55mm kit lens.

When you pick up a Canon 7D, you will be impressed with the overall feel of the camera. But as you use it, you will be even more impressed with its performance. It is a camera that is being used by photo enthusiasts and pros. In fact, it compares rather favorably to some of the full-frame models, even though it has an APS-C sensor similar to the one in the 60D and T3i.

Speaking of the APS-C sensor, this has been a major factor in separating cameras from full-frame models. However, reading many reviews by users and experts alike, and looking at the image samples, it is very difficult to fault the image quality of this model or one of the lower models with the 18-megapixel CMOS sensor. The quality is simply stellar. That is not to say that it is better. This is not the case. However, for the average user, even those semi-pros and pros who use this camera, the quality is so good that it takes an expert with a "pixel-peeper" degree to tell the difference.

One other advantage that many reviewers fail to mention is that you can use any lens that has Auto-focus capabilities on the Canon 7D. This is not true of the full-frame models.

Finally, you can get this camera for lots less than a full-frame model and use the money you save for some really nice lenses.


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