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.

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.

Canon EF-S lens

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