Canon EF-S lens

วันอังคารที่ 13 กันยายน พ.ศ. 2554

DSLR Lenses and their abbreviations

Posted: 10 Sep 2011 08:40 PM PDT

Canon EF-S lens

For those of you who know what these abbreviations will be, I have compiled a list of terms used for what it is and, of course, what really does it for you or avoid.

Abbreviations General.

Before getting to the nitty gritty of why they are all different, we see the similarities. There are three common terms to describe her slow and easy to understand and apply only the most creative and performanceFunctions.

Focal length: – The scope of the scene captured, for example, 16-35mm. A goal that extends over an area of 16mm (relatively large) to reduce by 35 mm.

Maximum aperture: – The maximum rate at which the lens can let in light. eg f3.5 or 2.8 – 5.6

If your goal is just a number, so that as open as possible.

If the lens has two numbers are then possible depending on the maximum openingthe lens focal length is adjusted.

The lower the number the larger the aperture and the fastest in the light. (See my forthcoming article on the law of reciprocity)

AF / MF switching between autofocus and manual focus

Canon Lens Abbreviations

Conditions for Canon lenses, describe

Canon produces an extremely wide range of lenses for its EOS cameras. With the marriageit produces is from Sigma, Tamron and Tokina Canon owners have a wide range of lenses Canon Fit SLR. The abbreviations used by Canon, as shown below.

EF:. Electronic Focus Ring Mount fits all Canon EOS series SLR cameras.

EF-S: As above, but only right that the APS-C sensor digital SLR like the 20D, 30D, 40D, 50D and 300D, 350D, 400D, 450D, 500D. The S stands for "short back focus", iethat the rear of the lens is much closer to the CMOS (CCD, if you will), as with all EF lenses.

USM ultrasonic motor for autofocus. Two species. Micro USM as a direct replacement for the old engines and ring systems of FD 'USM "with manual control.

OD: optical diffraction. Establish a technology, Canon lenses in the short overall length.

TS-E tilt-shift lens for perspective correction usedPhotography, as a rule change in the architectural work of converging lines and depth of field. Similar to the camera "Sinar".

The lenses: Canon professional with better optical quality and features not specifically. Usually white. All L-series lenses have a red ring on the outside ..

MP-E. Macrophoto electronic macro lens with electronic aperture control function designed.

IS: Image Stabilization, a system designed to reduce vibration of the hand. The Nikon version is called VR (Vibration Reduction) and a Sigma OS (Optical Stabilization).

Nikon Lens Abbreviations

Description Nikon Lens

Nikon manufactures a wide range of lenses with their specific abbreviations. Sigma, Tamron and Tokina lenses Nikon Fit SLR the choice to do almost as wide

AF DC-Nikkor _Lens>: spherical aberration Defocus Control setting, and then give the effect of blur used rounded blur for portraits.

CRC (Close Range Correction): Pot fisheye, wide angle, telephoto Micro offers higher quality and limited in our neighborhood.

DX Nikko r: optimized for sites with smaller sensors.

ED: Extra-low Dispersion glass. Superior sharpness and color correction blue and red. Travel

IF:. Internal focusing lens length remains unchanged

Macro: For close-ups of fire.

G: set aperture from the camera.

Nano Crystal Coat: Non-glare for clearer images.

VR: Vibration Reduction image stabilization Nikon's version runs down to shake the effects of the hand.

PC-E Perspective Control Architecture forPhotography.

RF: Rear focusing for adjusting auto focus ..

SWM: Silent AF

Sigma Abbreviations

Acronyms for Sigma lenses

EX: Sigma professional goals.

DG: For the full frame bodies

DC: For APS-C body.

ASP: aspherical lenses.

APO apochromatic objective.Unique to the chromatic aberration and Sigma.

OS: optical image stabilization.

HSM Hyper Sonic Motor. Silent AF.

RF: Rear focus ..

IF: internal focus so the physical length of the lens is reduced to shake hands to focus more shots.

DF: Dual focus. Does not rotate during AF.

Conv: Comes with Sigma teleconverter.

Tamron LensAbbreviations

Tamron lenses described

ASL Aspheric

AD: reduces chromatic aberration ..

Tue: Full Frame

II: short chassis.

IF: Internal Focusing.

LD: low-dispersion glass to reduce chromatic aberration

Macro: Designed to focus on issues closer

SP: SuperPerformance.

XR Extra refractive glass to enhance the optical effects.

VC: Vibration Control IS as Canon, Nikon's VR and Sigma OS.

Visit for more information on the objectives and applications abbreviations Park lens digital cameras. A professional trader full UK warranty SLR lenses offer.

วันศุกร์ที่ 9 กันยายน พ.ศ. 2554

Healthy fruits: mango

Posted: 04 Sep 2011 12:40 AM PDT

Canon EF-S lens

Mangoes are tropical fruits for their sweetness and juiciness known. They grow in warm tropical areas that receive a lot of rain. Mangoes have become very popular because a main feature, and that is the sweetness of the fruit. We are not just lucky to eat meat sweet mango, but the fruit is also known for producing quality and very sweet juice. Beauty mango-name, this yellow fruit is very nutritious.

Mangoes belong to the list of fruits thatthe most nutrients. They contain more than 20 of 20 vitamins and minerals. Mangoes are also rich in carbohydrates and calories. The mineral content in the mango fruit are iron, potassium and copper. There are some that come in small traces and minerals such as calcium, zinc, magnesium, manganese, selenium and phosphorus. The vitamins found in mangoes include vitamin A, vitamin C, vitamin K, vitamin B and vitamin E. It also contains folic acid or generalknown as folic acid.

Vitamins are found in the mango give us a lot of health benefits. Vitamin A and Vitamin C act as antioxidants. Vitamin A has several other advantages. Induce bone growth, especially in children and in the development of healthy skin and good vision. Vitamin A also contains a very important component, such as beta-carotene, which protects us from the sun known. This vitamin also has other advantages, such as improving the functioning of the lungs, to reduce agingProcess, reducing the complications associated with diabetes and prevent some forms of cancer.

Vitamin C, which is found in abundance in fruit Mango has its health benefits. It helps in the formation of collagen. This in turn helps in the repair and tissue growth, ie the rapid healing of wounds. Vitamin C also goes a long way in boosting the body's immune function. For those who are prone to stress, helps to alleviate the vitamin B in mangoStress.

Mangoes also contain some chemicals that eat very healthy. They are known as phytochemiclas. These include lutein, anacardic acid, gallic acid and cryptoxanthin.
The mango contains another important element that the body needs. And 'known as fiber. Mangoes are very rich in fiber, which has a number of advantages for the human body. Supports weight loss a great thing, especially for obese people and weight also helps. Mangoes are alsoAdvantage of a low-fat and no cholesterol. The other advantage would be that it helps against all cancer cells, increasing power.

Mango consumption is important for people with these symptoms – acid, hair loss, vaginal discharge, menstrual disorders, digestive disorders, diarrhea, hemorrhoids, prickly heat, sinusitis, vaginitis, splenomegaly, bacterial infections, scurvy, spastic colon, constipation , anemia and asthma.

The mango is available in manyVariety. The good thing is that, despite the size and shape of the varieties of mangoes, you continue to enjoy the many health benefits it offers. Note that mangoes harvested and eaten better in the summer.

วันพุธที่ 31 สิงหาคม พ.ศ. 2554

Canon Rebel XSI 12.2 – Benefits characteristics?

Posted: 31 Aug 2011 02:40 PM PDT

Canon EF-S lens

The Canon EOS Rebel XSI 450D 12.2 is also a well known and is the latest consumer DSLR. This new model has new features such as live view and the hype 12.2-megapixel CMOS sensor. This is actually a replacement of the EOS 40D and contains more individual features and advanced controls. This is ideal for professional photographers, mature enough live view implementation, which will surely much better than the point-and-shoot approach.

We try toFirst, the physical form of the camera. You will be surprised that the design of this model is very simple and minimalist. It is a simple box with a black finish with elegant. This can also be uncomfortable for the taking, but this is really a problem if you are already familiar.

One of the best things about this Canon Rebel XSI is 12.2, which has a resolution of 12.2 megapixels. In fact, this is now the highest resolution in this line. It also has a nine-pointAutofocus system and a 3-inch LCD. The size of the LCD is definitely something that this camera can be proud of themselves, and there is still room for improvement, the Live View system. This live-view system even stronger, as it involves a contrast AF function.

This model has a good color reproduction function. The brightness can be adjusted through seven different stages. This can be very useful, especially when shooting outdoors. You can also use a very wide range of opinionyou can capture an angel to 160 degrees.

As mentioned earlier, this model has a nine-point autofocus system, which it inherited from the old model. There is only a slight revision, giving a slow speed, reliable and can usually be handled without problems in low light or slower than you expect. However, this does not mean a cross-sensor during the nine points. It uses only a single sensor, with the exception of the center.

However, this self-focus, you can create a variety of options.For example, you can use a slower contrast detection focus system that can be used on the preview. This is also found on several compact cameras and can be used without interruption. The only problem is that there will be about 3 seconds to pick the lock.

The image quality of this model is also very impressive. It has excellent color rendition, which is very important for professional photography. This model also includes a general dynamic. It also has a D-RangeSetting that can target lights.

In general, this Canon Rebel XSI 12.2 good autofocus system, useful customization features and good image quality. For the pro-amateur photographer, this is certainly provides a commodity-based DSLR.

วันอังคารที่ 30 สิงหาคม พ.ศ. 2554

Canon EOS Rebel T3i Review and Test By A Photographer

Posted: 30 Aug 2011 10:41 AM PDT

Canon EF-S lens

Introduction

Canon has recently announced two new entry-level digital SLR, the Canon EOS Rebel and Canon EOS Rebel T3i is T3. It 'also known as 600D in marketing in Europe. As the successor of T2i Rebel (550D), continues to use the T3i the 18 megapixel sensor. However, it has advanced technology, which uses the previous model. As a photographer, a hobby, I will not tell you the details of the technology of DSLR camera, but I write this Canon EOS T3iReview to let you know why I would choose the EOS T3i, and give you a guide for selecting digital SLR camera. This is just my humble opinion. Now, we try to highlight the features of the EOS T3i looking for.

Highlight Features

1) 18.0 MP CMOS sensor

The T3i carries a 18.0 MP CMOS sensor that APS-C sensor. And 'capable of capturing high quality images and speed, and can provide enough resolution for enlargements or large crops. This first-class image sensor alsohas used many of the same advanced technology as the professional Canon SLR camera.

2) Image Processor DIGIC 4

The DIGIC 4 image processor is the core technology of the Canon camera. It can be the speed of camera operations and create innovative and natural color image. It works well with the CMOS sensor to achieve high performance.

3) Intelligent Auto mode, Scene

T3i The Intelligent Auto mode adds a new scene. The idea is that better researchThe results can be done with little input from the operator. Each of the configurations of the camera, providing a leadership role, describes in a sentence followed. This is the first EOS camera, such guidance.

Completion

In a word sample, the Canon EOS digital SLR T3i powerful. Although the choice of a digial SLR camera, the price is an important point of reference. The EOS T3i is selling on Amazon for $ 899. It includes an EF-S 18-55mm.The price of T3i (body only) is $ 799. The EOS is different from T3i T3. It uses a 12 megapixel CMOS sensor, but the price of T3 kit (with EF-S 18-55mm IS II lens) is only $ 599. These prices are affordable for entry-level photographers.

วันจันทร์ที่ 29 สิงหาคม พ.ศ. 2554

The Canon 7D Technical Overview Video

Posted: 29 Aug 2011 05:40 AM PDT

Canon EF-S lens

One of the key features that advanced amateurs and professionals to cost-conscious buyers seek in today's digital SLR's high-definition HD video recording. So what is interesting is the fact that they combine the use of lenses for both still and video images with the same body. Unfortunately, most surveillance cameras and size restrictions, that is until the introduction of the Canon EOS 7D Canon 7D video mode.

Canontook the feedback from its customers very seriously and treated with the sturdy Canon EOS 7D, which are incorporated many of their dreams into reality, especially for the video mode is also the possibility of greater control over the way in which to shoot their films and Audio-Recording from an external source to have. Manual control of shutter speed and aperture, multiple frame rate options are continuous autofocus while shooting just some of the features available in video mode from Canon 7D.

The 7D is all newCMOS sensor allows you to record video with the EOS 7D for high-definition video with a resolution of 1,920 x 1,080 pixels with an aspect ratio of 16:9 recording. The Canon DSLR video is recorded and output to both NTSC 23,976 or 29.97 frames / second, and PAL mode of 23,976 or 25 frames / second at full resolution. If you prefer, you can also down-sample the lower resolution camera to film for both NTSC and PAL TV formats makes gameswith all the changes necessary for video capture.

Movies are recorded as AVI files in Video Canon 7D. This format requires less space than JPEG, but does not suffer a serious loss of image quality, as it is stored in AVCHD format, if you change a significant amount of content between the image frames.

You can manually focus during recording. The good news with a focus on video is a pretty good depth in video mode obtainedStop this goal. This is due to the relatively low resolution of the video image.

You can choose between automatic or manual exposure in video mode, Canon 7D. You need the automatic mode to keep things simple, the camera simply adjusts the speed and aperture for correct exposure. It 'possible that at the same time to control the shutter speed, aperture and ISO and do this gives you a chance to freeze the action or the depth of field control;have a lot more creative control over your videos.

External audio can be the microphone of the camera microphone jack can be recorded on fixing. But the EOS 7D also features an internal microphone. You can also mute the audio recording, if desired.

Canon has listened to its customers and has provided many new and enhanced features that make the video on the Canon 7D in video mode a breeze and allows you to show your creativityIt is interesting talents in films produced by shooting a rival much more expensive professional camera. This is the Canon EOS 7D, a camera of choice among those who are severely photos and video.

วันเสาร์ที่ 27 สิงหาคม พ.ศ. 2554

Canon EOS Digital Rebel T1i EF-S SLR Reviews – Customers are the most reliable reviewers

Posted: 27 Aug 2011 03:20 AM PDT

Canon EF-S lens

They are swept away by the features of the Canon EOS Rebel T1i EF-S digital SLR – is to see a 15.1-megapixel Rebel and records video in high definition! But before you buy one, read the comments is a must-do activities.

Reviews more reliable
You can read Canon EOS Rebel T1i EF-S digital SLR camera review by experts and ezine – auditors paid. We believe that auditors PAID on reviews of real customers? If your answer"Yes," go for it! You can count on their views for a major purchase.

If your answer is "No", please read this summary of the comments on Amazon.

Summary of reviews of Amazon customers for Canon Rebel T1i
Percentages of votes (5 stars is the highest score)
74% of customers gave the camera 5 stars.
14% of customers gave the camera to 4 stars.
6% of customers gave the camera 3 stars.
5% of customers gave the car two stars.
1% of customersgave the camera a star.

Read these reviews first
You need "The most helpful favorable review" and read "The most useful critical review." Why? Because 883 of 892 (99%) positive review useful and 201,226 (89%) found this review helpful criticism.

The titles speak for themselves – "A wonderfully full-featured camera at an unbeatable price" and "problems with some video cards SDHC (mostly Kingston), you may miss some good shots when youSanDisk Extreme III. "

What can you verify?
Read a pair of 1 – and 2-star reviews – some can be valueless to express opinions, but others may contain valuable information. And remember, the camera does not meet all the requirements.

Now you can decide whether the Canon EOS Rebel T1i EF-S digital SLR camera for your needs!

วันพฤหัสบดีที่ 25 สิงหาคม พ.ศ. 2554

Healthy fruits: mango

Posted: 25 Aug 2011 04:01 PM PDT

Canon EF-S lens