Thursday, May 16, 2013

Metering


In photography,  metering is a process of measuring the lighting to produce a good photo. Metering is a photographic process that can be automated in addition to WB (white balance). So, when it comes to auto / manual, actually it just a matter of taste.
Metering is actually a very small portion in a photograph because there are 3 factors which are predominant, namely: composition, angle and moment. Although the portions are small and can be corrected to a certain extent. Errors in metering that can still be corrected if: 1 stop maximum over, or  2 stop maximum under.

Metering process begins by reading the camera's manual. Master the buttons and parts associated with the metering. Metering will be very easy if scenery who photographed with lighting average, it means neither was very bright or very dark.
Metering activities started by choosing what method will be used. Generally, there are three kinds of metering. But in new cameras, there are several additional methods that actually just variations of the 3's.

The first method are Matrix metering or Evaluative Average, which measures shooting area by averaging the light. Evaluative metering analyze the whole field to be photographed and then make conclusions. different cameras will produce different results, though only a little.
The second method are Center Weight metering (CW). If Evaluative averaging the entire surface of the photograph, CW only about 40 percent of the center. Spot metering are the third method. Generally, this method is not effective for a quick shoot. Vice versa, the relatively safest method for photographing in general with the terms are always ready with a compensation is matrix method.
Before going any further, let us first understand what is done by the camera when doing metering. When performing metering, the camera measures "brightness" that "sees", and then calculate the aperture and shutter speed what it needs.
Now I want to make sure, if you already know how to use the lightmeter in a camera to do the metering? Read the manual!



After understood how to use the lightmeter in your camera, let's begin to explore what it is metering.
Now, try to metering in the three alternate outfit. Will look different results, right? In fact, with the same light source, metering in the three shirts should produce the same numbers.
Dark shirt tends to give slow speed of the metering calculations, whereas light clothes instead right? The camera measures the "brightness" to be any gray 18 percent in the photo. That is the main principle of metering.
In metering, the point is that the image measure has "brightness" as desired. Not a matter of right or wrong! Metering simple way: use evaluative, that happens too light, repeat with minus compensation. In retrospect the results for the other times.
Metering science is not just the science of doing. But also need to memorize specific cases: the model back to the light, and others.
Gray 18 percent is gray with an optical density of 18 percent. You can buy graycard 18 percent in the photography shop. 18 percent gray example can be seen as in the picture below.


Before going any further about the metering, metering and graycard color here is not a matter of but it a matter of "brightness". dark shirt showing metering by the camera slow because it will be converted  black to  gray 18 percent (which is brighter). Similarly, the white will be fast because the camera metering will be 18 percent gray (which is more "dark" of course).

When shooting, you perform metering on the area to be photographed. For accurate results, use SPOT to the area that is approximately 18 percent as bright graycard. Metering this way can only be done if you do not hurred up, for example photographing sunrise / sunset. Quickest way is with evaluative metering, and use your intelligence and experience to perform compensation.
So, it is a matter of selecting metering method and compensation. After being able to, automatically or manually does not make any difference. But the best metering measurement is to measure directly the light from the source to the lightmeter separated.
For photographing landscape, you can use the spot, in an area measuring approximately gray18% or evaluative use with average compensation 0.3 stop. For shooting stage, evaluative use, with compensation of minus 1 stop to 3 stops.

Contoh foto teknik Metering dalam Fotografi
watch the photo A. This photo is not a simple metering. If you perform metering with what it is, the resulting image will be too bright.
A photograph with many black parts, you should measure the spot to the roughly 18 percent viscosity as graycard. If you use matrix methods, you should be compensated so that measurements recorded a black to a black.
Photo B need not compensated because of the relative density average is approaching 18 percent graycard. If you want a more intense blue, so-so compensated minus half or one stop.
contoh foto teknik metering dalam fotografi
Photo C is a photo of dark background stage. Photographing these circumstances, similar to a photograph A. Compensation shooting you with a minus. How many minuses? Plenty of practice, and the results of this exercise properly remembered.contoh foto teknik metering dalam fotografi



translated from : http://blog.poetrafoto.com/definisi-tips-teknik-metering-dalam-fotografi/

Tuesday, May 14, 2013

Astrophotography


Astrophotography is one of the art of photography is taking photos of objects around the night sky and other celestial objects such as planets, moons, galaxies, nebulae, clusters and stars. For some people, astrophotography is a very exciting hobby. For me personally photographing stars, nebulae and the night sky is an activity that has its own charm and satisfaction.
This time I would like to share tips on how to photograph the stars in the night sky beginner level using DSLR camera.

one of the conditions that need to be considered in the astrophotography is free night sky from light pollution.can mean the sky is not exposed by the city lights and the skies clean of air pollution (smoke), clouds and fog. One of the indicators that can be used are our eyes can see many stars in the sky clearly. If only one or two stars visible means light pollution is very high. The best place to take photos of stars are in the villages, mountains, beach or places far from urban lights.



Set Camera For Long Exposure technique
Align the camera settings in M mode or Manual
Log on Manual settings, provide the settings as follows:

  • ISO 3200 (or higher)
  • F4.0 (or the smallest number)
  • Picture Style Landscape or Vivid
  • Exposure time 30″
  • Image quality Raw + L or adjust the memory capacity may use Small, Medium or Large.
  • and don't forget a tripod.


Sunday, May 12, 2013

CAMERA EXPOSURE

A photograph's exposure determines how light or dark an image will appear when it's been captured by your camera. Believe it or not, this is determined by just three camera settings: aperture, ISO and shutter speed (the "exposure triangle"). Mastering their use is an essential part of developing an intuition for photography.

UNDERSTANDING EXPOSURE

Achieving the correct exposure is a lot like collecting rain in a bucket. While the rate of rainfall is uncontrollable, three factors remain under your control: the bucket's width, the duration you leave it in the rain, and the quantity of rain you want to collect. You just need to ensure you don't collect too little ("underexposed"), but that you also don't collect too much ("overexposed"). The key is that there are many different combinations of width, time and quantity that will achieve this. For example, for the same quantity of water, you can get away with less time in the rain if you pick a bucket that's really wide. Alternatively, for the same duration left in the rain, a really narrow bucket can be used as long as you plan on getting by with less water.

In photography, the exposure settings of aperture, shutter speed and ISO speed are analogous to the width, time and quantity discusse
d above. Furthermore, just as the rate of rainfall was beyond your control above, so too is natural light for a photographer.


EXPOSURE TRIANGLE: APERTURE, ISO & SHUTTER SPEED

Each setting controls exposure differently:
Aperture: controls the area over which light can enter your camera
Shutter speed: controls the duration of the exposureISO speed: controls the sensitivity of your camera's sensor to a given amount of light

One can therefore use many combinations of the above three settings to achieve the same exposure. The key, however, is knowing which trade-offs to make, since each setting also influences other image properties. For example, aperture affects depth of field, shutter speed affects motion blur and ISO speed affects image noise.


Saturday, May 4, 2013

Sun Set

Sun Set @Baubau Buton's Island
Sony A550
Focal Length : 18 mm
Aperture       : f/5.6
Exposure      : 1/2500 sec
ISO              : 200

Friday, May 3, 2013

Wangi-wangi

Wanci
learned photographing the night sky, one of the island in Wakatobi.

Sony A550
Focal Length : 18 mm
Aperture       : f/5.6
Exposure      : 30 sec
ISO              : 3200

Sunday, July 1, 2012

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