Sunday, September 26, 2010
Half Moon Cay Marriage License
stabilization systems objectives have their own characteristics depending on the brand you are using. In this article we will refer to the peculiarities of the objectives of Nikon.
a) The Vibration Reduction System (VR) lenses use different algorithms to calculate the deviation between two moments: While we maintain pressed the shutter button halfway and when you tighten down for exposure. Also before applying the latter algorithm performs a "pre-Centered Exposure." What does all this mean? Let us explain.
While we pressed the shutter, the vibration detection algorithm running on the target processor through the engine moves the lens to compensate for vibration, with the aim of providing a clear image in the viewfinder. When pressing the shutter release and activate the mechanism of exposure there is a focus of the lens to compensate for the vibration to the optical axis and the flow of motion data that come from that time produced by a different algorimo governed by purpose microprocessor, a new movement compensation of the lens. The result is that you can produce a slight "jump" between what we saw through the viewfinder and what ultimately is recorded by the sensor.
b) System of Nikon Vibration Reduction (VR) has two different modes of operation. In the so-called Standard l off is the slight motion jitter produced to keep the camera handheld when making a photograph. In this case it is assumed that the photographer is located on a base which itself is stable. To put fast. The ground. The so-called
Active compensation for camera shake occurs when the photographer produced not in a stable, but the very base is subject to movement: A car, train, boat, etc..
c) In some lenses that use Nikon's Vibration Reduction system of second-generation VR II, it is possible to maintain the active stabilization mechanism when using a tripod. These objectives are able to detect the absence of jitter that occurs when the camera is firmly attached to a tripod and do not initiate the normal clearing process. In theory they are able to detect the minimal camera shake that can occur due to mirror movement, movement of the shutter curtains and lateral motion due to wind.
Sunday, September 19, 2010
Wording For Football Birthday Invitations
Objectives Using Stabilized
When we use a stabilized lens to be aware of some specific circumstances, whether limited or inadequate understanding of its operation, enabling us to get maximum benefit:
a) Subject to
Because movement way in which advertising is usually presented on targets stabilized, the user may confuse what are the right conditions for its operation. It is often said that a stabilized lens allows shooting at shutter speeds of 3 to 4 steps slower without blurring appears. But there is one important nuance. Take the example of a previous article.
We are at 11 morning trying to get a picture of a flower. The lighting is correct. Since the flower is not very large, using a stabilized 18-200 lens must select a focal length of 150. Suppose that the maximum focal length aperture is f5 can use, for example. Consider the lighting conditions are such that the integrated camera meter tells us that the proper shutter speed is 1 / 30 sec.
We know that in order to trigger the camera by hand without showing blur due to vibration should use obtuación speed of 1 / 180 sec. (Assuming sensor APS-C). Since our goal is wonderful and allows stable shooting with less than 4 steps without causing the blurring due to vibration, ie 1 / 20 sec. we understand that 1 / 30 sec. is a faster shutter speed to 1 / 20 sec. and therefore we have a reasonable assurance of obtaining a perfectly clear. We
and blurry picture. What the hell happened?. What we are wrong?.
What has happened is we have not taken into account at that time running a slight breeze that moves the flower and the speed of 1 / 30 sec. is too slow to freeze the movement. Therefore
: stabilization objectives can avoid blurring due the movement of the camera, but NOT the motion because the subjects themselves.
b) Using a tripod, use a tripod
When the rule is simple: OFF stabilization system. If we do not, the system automatically start the process and run the risk of compensation is made unnecessary. In general, the blurring due to this circumstance is rather limited and does not always occur. But why risk?.
c) Sampling.
This topic is quite technical. The problem is that the information provided by motion sensors is not continuous, but occurs from time to time. For Nikon goals each 1 / 1000 sec. Therefore
engines will receive data to modify the position of the vibration compensation lens every millisecond. In fact the theory of information to detect a "change" is held every 1 / 500 sec. And there's a problem. If you use faster shutter speeds to 1 / 500 sec. the target when exposure occurs may be in a different position for the last measurement. And it can produce a slight blur.
Actually amateur photographers this problem affects us little, because our objectives are not bright sufientes to shutter speeds above 1 / 500 sec. are common. In contrast to the professionals yes that might affect them more. 
a) Subject to
Because movement way in which advertising is usually presented on targets stabilized, the user may confuse what are the right conditions for its operation. It is often said that a stabilized lens allows shooting at shutter speeds of 3 to 4 steps slower without blurring appears. But there is one important nuance. Take the example of a previous article.
We are at 11 morning trying to get a picture of a flower. The lighting is correct. Since the flower is not very large, using a stabilized 18-200 lens must select a focal length of 150. Suppose that the maximum focal length aperture is f5 can use, for example. Consider the lighting conditions are such that the integrated camera meter tells us that the proper shutter speed is 1 / 30 sec.
We know that in order to trigger the camera by hand without showing blur due to vibration should use obtuación speed of 1 / 180 sec. (Assuming sensor APS-C). Since our goal is wonderful and allows stable shooting with less than 4 steps without causing the blurring due to vibration, ie 1 / 20 sec. we understand that 1 / 30 sec. is a faster shutter speed to 1 / 20 sec. and therefore we have a reasonable assurance of obtaining a perfectly clear. We
and blurry picture. What the hell happened?. What we are wrong?.
What has happened is we have not taken into account at that time running a slight breeze that moves the flower and the speed of 1 / 30 sec. is too slow to freeze the movement. Therefore
: stabilization objectives can avoid blurring due the movement of the camera, but NOT the motion because the subjects themselves.
b) Using a tripod, use a tripod
When the rule is simple: OFF stabilization system. If we do not, the system automatically start the process and run the risk of compensation is made unnecessary. In general, the blurring due to this circumstance is rather limited and does not always occur. But why risk?.
c) Sampling.
This topic is quite technical. The problem is that the information provided by motion sensors is not continuous, but occurs from time to time. For Nikon goals each 1 / 1000 sec. Therefore
engines will receive data to modify the position of the vibration compensation lens every millisecond. In fact the theory of information to detect a "change" is held every 1 / 500 sec. And there's a problem. If you use faster shutter speeds to 1 / 500 sec. the target when exposure occurs may be in a different position for the last measurement. And it can produce a slight blur.
Actually amateur photographers this problem affects us little, because our objectives are not bright sufientes to shutter speeds above 1 / 500 sec. are common. In contrast to the professionals yes that might affect them more.
Sunday, September 12, 2010
Wedding Chapstick Favors Blog
Objectives Values \u200b\u200bObjectives stabilized
stabilizing system allows a goal off the slight blur that occurs when you take a picture by hand, without support and, when the shutter release, we made a small movement objective. Is often referred to shake or vibration.
This happens usually at shutter speeds below 1/LongitudFocal, for size of full-format sensor. If your size is APS-C sensor, the threshold corresponds to somewhat higher velocities.
To understand the stabilization mechanism, the first thing we do is explain what the target's movement that attempts to compensate. This movement can be decomposed into two components, as shown in the figure.
A vertical component consisting of a complete rotation of the camera and with it the objective "about the axis X. From a practical standpoint, the goal pointing a little towards the sky or a little to the ground.
A horizontal component consisting of a complete rotation of the camera and with it the objective "about the axis Y. From a practical standpoint, the goal pointing slightly to the right or slightly to the left.
Clearly, any rotation around the Z axis, the optical axis, will not have any influence on the image due to the circular symmetry of the targets. From the practical point of view equivalent to slightly raise the right or left of the camera.
Sensors are informed of these movements and sends the data to a microprocessor that after calculating compensation, active engines that move slightly inside the objective lens. This has placed among the rest that make up the group and its sole mission is to reduce vibration. The attached figure is represented this lens, but not the rest of the group.
The stabilization system activation caused by pressing the shutter button halfway, in the same action in which activated autofocus. Naming
blur the issue makes sense, because the situation is somewhat similar to what occurs for points closer or more distant to the focal plane that contained within the limits of the depth of field. That different rays from a single point in the scene converge in a wider area than the circle of confusion and therefore it is blurred in the image.
Here, the process is somewhat different.
Consider, for simplicity that the jitter is only a vertical movement. And let's realize that the goal a little more pointed skyward.
In this case, the rays from any point in the scene belonging to the focal plane impact on the target in different areas and different angles. So some intersect the image plane in an area outside the circle of confusion centered on the image point. In this way we obtain a blurred image of a point, because they belong to the focal plane, should generate the image plane in a circle (formed by all the rays that reach it by following different paths) below the circle of confusion. Obviously, this same reasoning applies to all items included within the limits of the initial depth of field.
The work of the stabilization system, in this case, slightly move the lens correction through the use of vertical motor so that the entire target system do impact the beam at the image in its original position within the circle of confusion.
Through this mechanism can coseguir reduce the shutter speed 3 to 4 steps, without showing the blur caused by vibration. Of course, not all the time. 
This happens usually at shutter speeds below 1/LongitudFocal, for size of full-format sensor. If your size is APS-C sensor, the threshold corresponds to somewhat higher velocities.
To understand the stabilization mechanism, the first thing we do is explain what the target's movement that attempts to compensate. This movement can be decomposed into two components, as shown in the figure.
A vertical component consisting of a complete rotation of the camera and with it the objective "about the axis X. From a practical standpoint, the goal pointing a little towards the sky or a little to the ground.
A horizontal component consisting of a complete rotation of the camera and with it the objective "about the axis Y. From a practical standpoint, the goal pointing slightly to the right or slightly to the left.
Clearly, any rotation around the Z axis, the optical axis, will not have any influence on the image due to the circular symmetry of the targets. From the practical point of view equivalent to slightly raise the right or left of the camera.
Sensors are informed of these movements and sends the data to a microprocessor that after calculating compensation, active engines that move slightly inside the objective lens. This has placed among the rest that make up the group and its sole mission is to reduce vibration. The attached figure is represented this lens, but not the rest of the group.
The stabilization system activation caused by pressing the shutter button halfway, in the same action in which activated autofocus. Naming
blur the issue makes sense, because the situation is somewhat similar to what occurs for points closer or more distant to the focal plane that contained within the limits of the depth of field. That different rays from a single point in the scene converge in a wider area than the circle of confusion and therefore it is blurred in the image.
Here, the process is somewhat different.
Consider, for simplicity that the jitter is only a vertical movement. And let's realize that the goal a little more pointed skyward.
In this case, the rays from any point in the scene belonging to the focal plane impact on the target in different areas and different angles. So some intersect the image plane in an area outside the circle of confusion centered on the image point. In this way we obtain a blurred image of a point, because they belong to the focal plane, should generate the image plane in a circle (formed by all the rays that reach it by following different paths) below the circle of confusion. Obviously, this same reasoning applies to all items included within the limits of the initial depth of field.
The work of the stabilization system, in this case, slightly move the lens correction through the use of vertical motor so that the entire target system do impact the beam at the image in its original position within the circle of confusion.
Through this mechanism can coseguir reduce the shutter speed 3 to 4 steps, without showing the blur caused by vibration. Of course, not all the time.
Sunday, September 5, 2010
Gold Desert Eagle Pellet Gun
ISO
ISO stands for International Organization Stadarization and in the field of photography measures the responsiveness of light-sensitive material to produce a photographic image well exposed. When the ISO setting increases is possible to obtain a correct exposure in the presence of less light.
Increasing ISO is really a process of amplification of the electrical signal generated by the light sensor fotocaptores. An entirely different process to that produced in the field of film photography.
inexorably linked to amplification of the electrical signal is the phenomenon of noise. Thus the main problem to be addressed when using high ISO settings is the management of noise.
We can raise several questions: Under what circumstances
is necessary to raise the ISO?
How can we increase the ISO value, without deterioration is the picture obtained by the appearance of noise? Let
to comment on the second question. Actually the answer depends on the sensor you are using. The base level is usually 100 ISO although some cameras will automatically start at 200 and a few at 50. The mechanism is such that if we raise the ISO value of 100 to 200, we get the same exposure to the light half.
If using as reference a digital camera compact, the sound is already very evident even when we held the first increment of 100 to 200. Therefore, few joys.
for digital SLR cameras, low-end may be possible to raise up to 400. In my Pentax ist DS, which launches the series on 200 ISO beyond 400 the noise starts to be a problem. For semi-professional digital SLR
, values \u200b\u200bof up to 800 ISO is not usually an issue. In my Nikon D200, is what suecede.
In the case of professional SLR is possible to raise the level more. So they say.
In all cases, and it is important to be clear, what is meant by the above paragraphs is that the noise-generation inevitably is easily removed using a photo editing program. Because their intensity is mild.
But there are always a "but" only if the correct exposure at or very close to correct. This means that if you manipulate the image with an image editing program to get the correct exposure, we have not succeeded in capturing, it is likely that we bring out the noise and just ruining the picture. In case of underexposure the problem worsens.
With respect to the first-and still-unanswered question, it is customary to say that the proper context for raising the ISO value is when the scene lighting is poor. When it is dark. For example, in sunsets, interiors, etc. And it's true.
But in my opinion, there are other circumstances more favorable to it in increasing the ISO value. When we try to shoot static subjects not targeted faint in normal lighting conditions. To realize: A flower swaying in the breeze at 11 am. If we use a very bright target such as the Nikon 18-200 f3.5-5.6 is often necessary due to the small size of the flower, use a focal length of about 150 mm. In that case the greatest possible openness is around f5. With these data, the appropriate shutter speed to get correct exposure can be so low that the movement itself flower, swaying in the breeze, lead us to a power of focus. (Notice to mariners: Here the fact that the lens is, as it is, stabilized, adds nothing. Since the mission of stabilization is to correct the movement of camera shake in the hands of the photographer and has no power to act on the flower that is moving. More on this in another article.)
In such cases there is an additional favorable circumstances. Since the lighting conditions are correct, the electrical signal generated is high and therefore the signal to noise ratio is very favorable.Lo which means that the noise is negligible.
Finally, the protocol used is very simple: Set the correct exposure with the lowest ISO value, typically 100. It raises the level to where possible or necessary, then increases the shutter speed in the same number of steps. 
 |
| Objective: Nikon 18-200 f3.5-5.6 Focal Length: 135 mm. Aperture: f5 Shutter Speed \u200b\u200b : 1 / 125 sec. ISO: 400 |
ISO stands for International Organization Stadarization and in the field of photography measures the responsiveness of light-sensitive material to produce a photographic image well exposed. When the ISO setting increases is possible to obtain a correct exposure in the presence of less light.
Increasing ISO is really a process of amplification of the electrical signal generated by the light sensor fotocaptores. An entirely different process to that produced in the field of film photography.
inexorably linked to amplification of the electrical signal is the phenomenon of noise. Thus the main problem to be addressed when using high ISO settings is the management of noise.
We can raise several questions: Under what circumstances
is necessary to raise the ISO?
How can we increase the ISO value, without deterioration is the picture obtained by the appearance of noise? Let
to comment on the second question. Actually the answer depends on the sensor you are using. The base level is usually 100 ISO although some cameras will automatically start at 200 and a few at 50. The mechanism is such that if we raise the ISO value of 100 to 200, we get the same exposure to the light half.
If using as reference a digital camera compact, the sound is already very evident even when we held the first increment of 100 to 200. Therefore, few joys.
for digital SLR cameras, low-end may be possible to raise up to 400. In my Pentax ist DS, which launches the series on 200 ISO beyond 400 the noise starts to be a problem. For semi-professional digital SLR
, values \u200b\u200bof up to 800 ISO is not usually an issue. In my Nikon D200, is what suecede.
In the case of professional SLR is possible to raise the level more. So they say.
In all cases, and it is important to be clear, what is meant by the above paragraphs is that the noise-generation inevitably is easily removed using a photo editing program. Because their intensity is mild.
But there are always a "but" only if the correct exposure at or very close to correct. This means that if you manipulate the image with an image editing program to get the correct exposure, we have not succeeded in capturing, it is likely that we bring out the noise and just ruining the picture. In case of underexposure the problem worsens.
With respect to the first-and still-unanswered question, it is customary to say that the proper context for raising the ISO value is when the scene lighting is poor. When it is dark. For example, in sunsets, interiors, etc. And it's true.
But in my opinion, there are other circumstances more favorable to it in increasing the ISO value. When we try to shoot static subjects not targeted faint in normal lighting conditions. To realize: A flower swaying in the breeze at 11 am. If we use a very bright target such as the Nikon 18-200 f3.5-5.6 is often necessary due to the small size of the flower, use a focal length of about 150 mm. In that case the greatest possible openness is around f5. With these data, the appropriate shutter speed to get correct exposure can be so low that the movement itself flower, swaying in the breeze, lead us to a power of focus. (Notice to mariners: Here the fact that the lens is, as it is, stabilized, adds nothing. Since the mission of stabilization is to correct the movement of camera shake in the hands of the photographer and has no power to act on the flower that is moving. More on this in another article.)
In such cases there is an additional favorable circumstances. Since the lighting conditions are correct, the electrical signal generated is high and therefore the signal to noise ratio is very favorable.Lo which means that the noise is negligible.
Finally, the protocol used is very simple: Set the correct exposure with the lowest ISO value, typically 100. It raises the level to where possible or necessary, then increases the shutter speed in the same number of steps.
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