Showing posts with label Camera Lens. Show all posts
Showing posts with label Camera Lens. Show all posts

Sunday, 25 March 2012

What Makes for a Good SLR Lens?

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Posted: 21 Mar 2012 06:51 PM PDT
I went to visit an old friend yesterday who was my main inspiration to get into photography. It seems that he has been taking beautiful photos forever forever and went on to show me his newest gift – a brand new Canon lens – Ultra-Wide 16-35mm f/2.8.
slr lens
"Nikkor Lens 50mm f/1.8D AF" captured by Romeo E. Catapang Jr. (Click Image to See More From Romeo E. Catapang Jr.)
I went on to try it and realize how good the lens was. But WHY was the lens so good? After all – what makes a good lens good? People spend thousands of dollars on a good lens. Here are a few reasons why it’s so important.

1) Distortion

All lenses have some kind of distortion. This tends to be manifested most in ultra wide angle lenses, particularly at very wides angles. A good example of this is one picture that I took in Venice. I had walked back as far as possible to fit the entire frame into the photograph and had to use the widest lens angle possible (14mm). You can see the tower on the left hand side appears to be leaning. Clearly, it is not like this (and you’re going to have to believe me that it’s straight), but illustrates the lens distortion that exists.
Better quality lenses have less distortion through the use of a greater number of lens elements. Nikon has just released an excellent 14-24mm ultra wide angle lens with very little distortion. The lens has 11 lens elements and weighs a full 1kg. Clearly not a lens to take lightly.
While photo manipulation software exists today that can correct lens distortion, it is always better to capture the image as it is.

Saturday, 17 March 2012

“Sigma 50-500mm F4.5-6.3 APO DG OS HSM [REVIEW]” plus 1 more: Digital Photography School

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Link to Digital Photography School

Posted: 13 Mar 2012 11:42 AM PDT
The Sigma 50-500mm is something of a specialty lens. I say this because, while a 10x zoom seems like a good investment, you really need to have a reason to pick up this hefty, useful tool. The price is moderate for quality glass but the size is something else. Here, take a look:
PeterWestCarey-CameraAwesomePhoto(1)
That's the lens with hood attached. It's a two piece hood which helps with packing, some. I'll get to that.
Who is this lens for? Someone who:
  • Has decent strength (it weighs about 6lbs/2.7kg)
  • Has room in their bag (it's big, see stats)
  • Wants an awesome range of zoom
  • Is thinking of going on safari in Africa
  • Has a tripod or monopod
  • Shoots sports in ample light
PeterWestCarey-CameraAwesomePhoto(4)
PeterWestCarey-CameraAwesomePhoto(5)

Specifications

PeterWestCarey-CameraAwesomePhoto(3)From Sigma's site
  • Lens Construction – 22 Elements in 6 Groups
  • APO Tele Converter  -1.4X MF 2X MF
  • Angle of View – 46.8-5.0
  • Number of Diaphragm Blades -9
  • Minimum Aperture -f22
  • Minimum Focusing Distance – 50-180 cm / 19.7-70.9 in
  • Filter Size (mm) – 95
  • Maximum Magnifications – 1:3.1
  • Dimensions -(Diameter x Length) 104.4×219 mm/4.1×8.6 in
  • Weight – 1970g / 69.5oz.
  • Fits Canon, Nikon, Sony, Pentax

Tuesday, 13 March 2012

“Tamron 18-200mm Zoom F/3.5-6.3 lll VC REVIEW” plus 1 more: Digital Photography School

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Link to Digital Photography School

Posted: 11 Mar 2012 11:03 AM PDT
Tamron 18-200mm zoom f 3.5 6.3 III.jpeg
A Guest Post by Michael Agliolo.
Got a chance to take a test drive with the new Tamron 18-200mm zoom F/3.5-6.3 lll VC – model B011 Lens.
I like to think in terms of 35mm equivalent when shooting with these format cameras, so this, all in one, zoom lens plays out at from wide angle 27mm to telephoto 300mm. With that in mind I was surprised as to how compact and light this lens felt. Weighed about the same as an orange (1 lb). The zoom action was smooth with a nice tight feel, no extra movement, very precise. You've got a pretty fast telephoto lens at f/3.5 in the wide mode, and with the VC (Vibration Compensation) built in, I decided to do all my testing hand held. I shot everything in high res jpeg. All images are straight out of the camera with no Photoshop adjustments.

Monday, 5 March 2012

PhotographyBLOG

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Posted: 05 Mar 2012 04:15 AM PST
News image
Sony Japan has posted a notice on its website saying there is a shortage of supply of the new Carl Zeiss Sonnar T* E 24mm f/1.8 ZA lens due to unexpectedly high demand.

Tuesday, 28 February 2012

Prime Lens Vs Zoom Lens – Which Is Best?

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So, youre wanting to get a new lens, but youre not quite sure whether to buy a prime lens or a zoom lens. Both types of lenses have their advantages and disadvantages, and you want to make sure you make the right decision and get the lens which best fits your photographic needs.

In case you didn't already know, the main difference between a zoom lens and prime lens is that a zoom lens enables you to adjust your focal length within a certain range (for example 18-50mm), whereas a prime lens has a fixed focal length.

So you might be wondering what the point is of using a prime lens. Surely if you have the choice between a lens with flexibility and one with no flexibility, then surely the flexible one is the best one, isnt it? Well, its not really as straightforward as that, because prime lenses do have some advantages. To begin with, they are lighter than zoom lenses because they have less moving parts. Mechanically speaking, they are simpler.

In addition to this, prime lenses usually have wider apertures. The aperture of a lens determines how much light the lens lets in at any one time. Aperture ratings are in ratios, for example 1:3.5 or 1:2.8, but usually when buying a lens you will see it shown without the 1 in front of it, for example 3.5. Lenses with lower aperture numbers are more expensive, as a lower number means a wider aperture. Having a wide aperture produces a shallow depth of field, meaning that only a small distance range is in focus. A narrow depth of field (a wide aperture) would be great for close-ups of flowers where you want the background blurred, whereas a large depth-of-field (a small aperture) would be ideal for landscape photos.

Okay, so how about the zoom lens?

Well, a zoom lens will give you a bigger range of distances to compose your image. This means that you don't need to move closer or further away from your subject to get the picture you're after. I t can also be great for taking shots of wildlife, because you can zoom in without having to change your position, so you will be less likely to scare the animal away. 
The best way to decide which type of lens is right for you is to ask yourself what type of photography you are going to be doing. If you are going to be photographing a scene which remains still, such as a landscape scene, then a prime lens could be a good choice. If on the other hand you want to photograph things that are moving, such as animals, people, or sports photography, then a zoom lens is a must.


So, youre wanting to get a new lens, but youre not quite sure whether to buy a prime lens or a zoom lens. Both types of lenses have their advantages and disadvantages, and you want to make sure you make the right decision and get the lens which best fits your photographic needs.

In case you didn't already know, the main difference between a zoom lens and prime lens is that a zoom lens enables you to adjust your focal length within a certain range (for example 18-50mm), whereas a prime lens has a fixed focal length.

So you might be won dering what the point is of using a prime lens. Surely if you have the choice between a lens with flexibility and one with no flexibility, then surely the flexible one is the best one, isnt it? Well, its not really as straightforward as that, because prime lenses do have some advantages. To begin with, they are lighter than zoom lenses because they have less moving parts. Mechanically speaking, they are simpler.

In addition to this, prime lenses usually have wider apertures. The aperture of a lens determines how much light the lens lets in at any one time. Aperture ratings are in ratios, for example 1:3.5 or 1:2.8, but usually when buying a lens you will see it shown without the 1 in front of it, for example 3.5. Lenses with lower aperture numbers are more expensive, as a lower number means a wider aperture. Having a wide aperture produces a shallow depth of field, meaning that only a small distance range is in focus. A narrow depth of field (a wide aperture) wo uld be great for close-ups of flowers where you want the background blurred, whereas a large depth-of-field (a small aperture) would be ideal for landscape photos.

Okay, so how about the zoom lens?

Well, a zoom lens will give you a bigger range of distances to compose your image. This means that you don't need to move closer or further away from your subject to get the picture you're after. It can also be great for taking shots of wildlife, because you can zoom in without having to change your position, so you will be less likely to scare the animal away.

The best way to decide which type of lens is right for you is to ask yourself what type of photography you are going to be doing. If you are going to be photographing a scene which remains still, such as a landscape scene, then a prime lens could be a good choice. If on the other hand you want to photograph things that are moving, such as animals, people, or sports photography, then a zoom lens is a must.

Its not always easy trying to make this kind of decision, but whatever you decide, a Canon EF 85mm or a Nikon 17-55mm 2.8 Lens are good examples of the type of lenses that will always be useful to have as part of your photography kit.


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Sunday, 26 February 2012

My Wide angle lens Opinion

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As you can find different types of cameras to fulfil different sorts of shooting situations and for various requirements. Same is the case for the camera lenses. Every single camera has a various usage and its attributes. Along with its usage as well as the attributes, the very good points and also the bad ones are also defined about the camera lenses employed within the camera. By acquiring to know about the several camera lens characteristics among all of the distinctive cameras, the details regarding the usage and application of the camera lens becomes recognized to the person. One should know the characteristics of unique camera lenses so as to have full knowledge about them. The extra you know the extra you'll be able to apply the correct lens during the appropriate scenario.

Saturday, 25 February 2012

Photography knowledge - Wide-angle lens tips

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In today's news photography coverage, reporters are growing increasingly prefer to use a wide angle lens. Surrounded as they vie with each other when interviewed, and sometimes only with wide-angle lens. Not close to your subject in the press were often holding the camera, using 20mm or 24mm camera lens from the top of the head, cut through the enlarged photos can be useful. Photographed using wide-angle lens edge, is a do not disturb the object being photographed a good way, because at least for now, many people still believe that only when the cameras will be eaten in the photo.

Determining the Perfect Camera Lens for You

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Many beginning photographers have little idea what type of camera lens they should purchase with their new SLR Camera. That is totally understandable since there are so many different ones to choose from. Choosing the camera was hard enough right? Well, there are a few questions and aspects a photographer should think about before picking a particular lens.

The first question you need to ask your self is "What type of Camera do I own?" This is probably an obvious question, but it's critical to make sure that the lenses you are considering to buy is compatible with your camera. Different lens brands use different lens mounts. This means that only a Sony lens can be used with a Sony camera, a Nikon lens with a Nikon camera, a canon lens with a canon camera, etc However, it is important to note that there are third party brands that make lenses as well; just make sure that the third party lens was constructed for your specific brand and model of camera.

Which Canon EOS Lens Is Best For A Beginner - 3 Hints For Choosing A Good All Purpose Lens

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What do you believe is your beginning consideration as a new digital SLR owner? It should be which lens you want as an all-purpose lens. Believe me, there are plenty of folks who have agonized over this decision.

There are many really superior lenses to consider as walk around lenses. It's kind of like buying a compact point and shoot camera, though. What zoom range are you looking for?

For the purpose of this article, it shall be assumed that you are searching for a zoom lens rather than one with a fixed focal length. Most, though not all, new owners opt for the Canon "kit lens" as their first lens. While choosing a kit lens may make sense to you now, you will likely not be happy with the lens down the road. You either think you will just wait and purchase a better lens later, or you don't even think about a different lens.

That is not my view. You should get the very best glass(lens) that money can buy rather than spending money on an inf erior kit lens. After all, you will want to upgrade fairly soon, anyway, so why not get more bang for your buck right up front.

There are several things to consider about the lens you are planning to buy.

First consideration is focal length. In general, a focal length of about 18-24mm on the short end and 55-75mm on the long end will give you a very useful range. Keep in mind that these numbers are not critical. There are also some excellent quality lenses that have about 105mm at the long end.

Canon, Sigma, and Tamron have recently released some pretty good lenses in the super-zoom category. These have focal lengths of 18mm at the short end and 200-270mm on the long end. They have gotten favorable reviews, however just keep in mind that the image quality will not be as good as those lenses with less zoom capability.

Second consideration is aperture. The best lenses will have a constant aperture of f/2.8 across all focal lengths. Y ou can almost always save money by getting a lens with a variable aperture, such as f/3.5-5.6, but they will not give you the same performance in all situations, especially when lighting is a challenge.

The final thing to scrutinize when buying your first lens is price. For some, this may be the first thing to consider, but with DSLR photography, it really needs to follow the other two factors. Rather than getting the cheapest lens on the market just to have one, it would be far better in the long run to save enough money to start with a good lens. Don't make the same mistake that so many who have gone before you. If good image quality is something you take seriously, you will not be satisfied with a poorly constructed lens. It is very frustrating to try to take great pictures with poor quality lenses.
Now, you can save money by using Canon EOS lenses from third party manufacturers. Some third party lenses are top-notch and less costly than a Canon lens that is identical in capabilities.

A word of warning. Camera forums can be very informative, and they are full of well-meaning photographers, but they can also be very confusing. This is because the folks in those forums are very passionate about their opinions. They can mislead you by bashing certain cameras and products. While this is not always the case, if it happens to you, it could cloud your thinking and mess up your research.

User opinions on the Canon USE camera manufacturer site are much more helpful. Then there are other sites that will guide you as well. These are FredMiranda.com and online stores like Amazon.What do you believe is your beginning consideration as a new digital SLR owner? It should be which lens you want as a all-purpose lens. Believe me, there are plenty of folks who h ave agonized over this decision.

There are many really superior lenses to consider as walk around lenses. It's kind of like buying a compact point and shoot camera, though. What zoom range are you looking for?

For the purpose of this article, it shall be assumed that you are searching for a zoom lens rather than one with a fixed focal length. Most, though not all, new owners opt for the Canon "kit lens" as their first lens. While choosing a kit lens may make sense to you now, you will likely not be happy with the lens down the road. You either think you will just wait and purchase a better lens later, or you don't even think about a different lens.

That is not my view. You should get the very best glass(lens) that money can buy rather than spending money on an inferior kit lens. After all, you will want to upgrade fairly soon, anyway, so why not get more bang for your buck right up front.

There are several things to consider about the lens you are planning to buy.

First consideration is focal length. In general, a focal length of about 18-24mm on the short end and 55-75mm on the long end will give you a very useful range. Keep in mind that these numbers are not critical. There are also some excellent quality lenses that have about 105mm at the long end.

Canon, Sigma, and Tamron have recently released some pretty good lenses in the super-zoom category. These have focal lengths of 18mm at the short end and 200-270mm on the long end. They have gotten favorable reviews, however just keep in mind that the image quality will not be as good as those lenses with less zoom capability.

Second consideration is aperture. The best lenses will have a constant aperture of f/2.8 across all focal lengths. You can almost always save money by getting a lens with a variable aperture, such as f/3.5-5.6, but they will not give you the same performance in all situations, especially when ligh ting is a challenge.

The final thing to scrutinize when buying your first lens is price. For some, this may be the first thing to consider, but with DSLR photography, it really needs to follow the other two factors. Rather than getting the cheapest lens on the market just to have one, it would be far better in the long run to save enough money to start with a good lens. Don't make the same mistake that so many who have gone before you. If good image quality is something you take seriously, you will not be satisfied with a poorly constructed lens. It is very frustrating to try to take great pictures with poor quality lenses.

Now, you can save money by using Canon EOS lenses from third party manufacturers. Some third party lenses are top-notch and less costly than a Canon lens that is identical in capabilities.

A word of warning. Camera forums can be very informative, and they are full of well-meaning photographers, but they can also be very co nfusing. This is because the folks in those forums are very passionate about their opinions. They can mislead you by bashing certain cameras and products. While this is not always the case, if it happens to you, it could cloud your thinking and mess up your research.

User opinions on the Canon USA camera manufacturer site are much more helpful. Then there are other sites that will guide you as well. These are FredMiranda.com and online stores like Amazon.

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