Saturday 28 February 2015

Understanding the concept of ISO

By definition ISO is a measure of the camera sensor sensitivity to light. The higher the ISO setting, the more sensitive we terhada sensor light.


To get a clear picture of the ISO setting on the camera we (ASA in the case of photographic film), think about a bee community.

And if my camera set at ISO 200 means I have 200 worker bees.
An ISO is a worker bee. If I set the camera at ISO 100, it means I have 100 worker bees.
The task of each worker bees are picked light entering through the lens of the camera and make pictures. If we use the lens aperture identical and equally we set at f / 3.5, but I set the ISO at 200 while your 100 (think again about the worker bees), then the image has to be faster who completed?



Outline:

When we add the ISO settings from 100 to 200 (the aperture that is always constant - we lock the aperture at f / 3.5 or through Aperture Priority mode - A or Av), we shorten the time needed to manufacture a photo on our camera sensor by half ( 2 times faster), a shutter speed of 1/125 to 1/250 sec.
You can try this sense in the case of the aperture, try to set the shutter speed at 1/125 we always constant (or through Shutter Priority modes - S or Tv), and change-change your ISO settings in multiples of 2; eg from 100 to 200 to 400 ... and so on, look at the changes in the amount of your aperture
When we add more ISO to 400, we cut the time of making photo by half again: 1/500 sec.
Whenever exposure shorten as much as half, we call raise sxposure by 1 stop.

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Tesoro Launches Gungnir Black Optical Gaming Mouse

Tesoro Technology USA Inc., a manufacturer of high-tech gaming products, announces the Gungnir Black optical gaming mouse with customizable RGB illumination. The Gungnir Black is named for the spear Odin used in Norse mythology. It is said that the Gungnir is so well balanced that it can strike any target regardless of the skills or strength of the wielder. Much like the mythological Gungnir, the Gungnir Black with a 3500 DPI optical sensor ensures smooth and controlled movements when targeting opponents in the heat of battle.

The Tesoro Gungnir Black has full color programmable LED illumination and fully independent and programmable buttons. 64Kb of onboard memory allows users to set up to 35 macro keys and 1600 recordable actions. In the included software, gamers can adjust the DPI, polling rate up to 1000Hz, and the illumination color.


The Gungnir Black comes with Omron Switch technology, which allows for tactile feedback and durability. Smooth Teflon feet ensure maximum precision and movement during game play. The ergonomic design and rubberized coating on both sides give maximum comfort and grip. Added touches like the gaming grade engine chipset, gold-plated USB interface, and braided durable cable make the Gungnir Black optical gaming mouse set to raise the limit in your gaming arsenal.

New Tesoro User Interface (UI)
The Gungnir Black utilizes Tesoro's new UI which has been redesigned to be more user-friendly. Gamers can easily adjust the DPI, record macros, set profiles, and change the illumination color. This new UI will soon be rolled out to the entire current Tesoro product line.

MSRP and Availability
The Tesoro Gungnir Black will be available in North America in March for the suggested retail price of $29.

For more information, visit the product page.

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Thursday 26 February 2015

Understanding Exposure Drafts

Often after buying a good digital slr camera and point & shoot, we are fixated on auto mode for longer periods of time. Auto mode is the most easy and fast, but it does not give satisfaction creativity.

For those who want to "pass and rising class" of the auto mode and want creative soul into the photographs produced, it helps us understand the concept of exposure. Renowned photographer, Bryan Peterson, has written a book called Understanding Exposure in which the concept of exposure are easily explained.

Peterson members illustration of three elements which must be known to understand the exposure, he was named the relationships between the three as a Triangle Photography. Each element in photography triangle is associated with light, how light enters and interacts with the camera.

These three elements are:

ISO - a measure of how sensitive the camera sensor to light
Aperture - how big open lens when the photo was taken
Shutter Speed ​​- the span of a "window" in front of the camera sensor is open
The third element of interaction is called exposure. Change in one element will result in changes in other elements.

Parable Exposure Triangle

Perhaps the easiest way to understand the exposure is to provide a parable. In this case I like the parable of the exposure triangle as well as a water faucet.

Shutter speed for me is how long we open the tap.
Aperture is how wide we open the tap.
ISO is a strong impetus from the water taps.
While the water flowing through the faucet is received light camera sensor.
Certainly not a perfect metaphor, but at least we got the basic idea. as you can see, if the exposure is the amount of water coming out of the faucet, then we can change the exposure value by changing one or a combination of all three constituent elements. You change the shutter speed, mean change how long the water tap is open. Aperture change means changing how much water flow, while changing how strong encouragement from the water source.

Source : http://belfot.com/memahami-konsep-eskposur/
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CANON EOS 5DS with Image Sensor 50.6 Mega Pixels.. WOW !!!

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