Understanding SLD Camera

So far, we know the term or abbreviation SLR cameras from a single lens reflex. Why is “single” and why use “reflex”? The system comes complete SLR camera system lenses previously used double (double), the camera system of double-lens system (see picture).
Double-lens system for targeting dividing lens (lens up) and the lens through which to send pictures to the film (lens down). Single lens system complete with wearing only one lens, aka lens and lens to shoot pictures into a single shipper. So, to divide this work is necessary to mirror reflex lid quickly.
Mirror reflex SLR camera tilted at 45 degrees to send the image to the viewfinder with reflecting upward (see figure diagram). And, this mirror reflex movement will lift up when the shutter massaged so that the image sent to the recording field is located behind the mirror. Field can record movies on conventional cameras, digital sensors to digital cameras.
In this digital age, the reflex mirror images can be eliminated because the target can be generated by the sensor field at once. So, when the reflex mirror is removed, the camera with this system no longer be eligible to carry the nickname SLR because it did not have the reflex mechanism again.
Digital world is changing all the paradigms of photography. In the early ’90s when the digital era began, the digital camera is only used to replace film with digital sensors. The Company is the first Olympus SLR camera designed purely digital from the beginning in the early 2000s.
“Life view”
Since the early 2000′s, digital cameras are divided into three classes, namely DSLR (digital SLR), Prosumer (like SLR but the lenses can not dilepastukarkan), and a pocket camera. The fundamental difference between DSLR and her siblings are targeting the problem. Prosumer cameras and compact cameras can shoot through the LCD screen because the sensor can directly send the image to targeting. Things like this can not be done in the camera because the sensor DLSR just received a picture after lifting the reflex mirror.
In April 2006, Olympus issued E-330 camera can make life view alias can shoot from the LCD screen. This system was initially derided as a user of SLR cameras so “stupid”, as if a pocket camera for shooting from the LCD screen.
However, in use, the system life view was very profitable because photographers can shoot with more freedom, including the camera at a very low position, or very high. By looking into the LCD, the eyes of photographers no longer need to stick to the viewfinder should use ordinary SLR camera.
Slowly but surely, other DSLR cameras began to apply this view life system.
One of the most important thing is that later surfaced when he was able to view life, what good is a mirror reflex? What if the mirror was removed?
We remember in the days of film, set the lens diaphragm. Then, when the camera into the electronic era, bracelets diaphragm because the diaphragm shall be removed electronically from the camera body. By removing the bracelet diaphragm in the lens, lens prices so much cheaper then.
If the reflex mirror is removed, the price of the camera must also decline because of a complicated mechanism is removed.
Disappearance mirror reflex also brought other consequences. Flang distance or distance from the lens holder to the sensor surface can be reduced. Empty space left by the mirror reflex lens position can be replaced with a new system.
“Micro four thirds”
So, in August 2008, the two companies, which Olympus and Panasonic, announced a new camera system that they call them micro four thirds system (MFT). The system is updating their old system called the four thirds system (FT), by eliminating the reflex mirror, and then make a new lens system adapted to the loss of space due to the reflex mirror.
MFT system allows a lens system is much more concise. Note the diagram on this page. If the distance flang FT system is 38.67 mm, MFT system flang distance is 20 mm. It is conceivable that later MFT lenses much smaller than its predecessor.
See the comparison MFT 200 mm lens f / 4 with a 300 mm lens f / 4 system at 135 on the image of this page. Because of the small sensor size, MFT 200 mm lens is equivalent to 400 mm lens on a normal 135 system.

SLD
MFT system camera with lenses no longer reflexively, the SLR is not appropriate nickname for this species. Appropriate nickname for him is the SLD aka digital single lens.
SLD deserves the nickname because it is not possible to use other systems the same way, namely by removing the mirror reflexes. So, rather than just the FT system that will remove the lens. It’s not impossible Nikon, Canon, Sony, and Pentax also will create a new system without a reflex mirror.
Panasonic launches its SLD camera first, Lumix G1, in October 2008. Two months later Panasonic adds video functionality to the camera with a GH-1.
On June 16, 2009, turn to the official Olympus camera out of his SLD named EP-1.
Compass who tried both cameras felt great practicality in both. Lightweight and compact, but produces images with quality in accordance with his time. Both G-1 and EP-1 could be held in the palm of an adult’s hand (see picture). Lens system they are also lightweight and tiny.
Trouble shooting via the LCD is still complained of many professional photographers. Viewing digital images by viewing the real image is very much different and this may require conditioning, as well as those now used to meet in cyberspace through Facebook. Even so, Olympus provides a solution for this, namely by adding an optical viewer in EP-1 (optional), as shown in the picture in this page.
In the future, the camera seems to be shifting SLD total Prosumer camera. Olympus and Panasonic seemed to have stopped production of their Prosumer.
Want to know what “more terrible?” By adding an adapter, the camera SLD in the future could use the lens of any brand. Once again, anything!

Senior Photographer

The link between ISO and noise in digital photography

For starters, just so-so recalled that the basic photography is to play with light, which more or less light is captured by the camera is influenced by how the shutter speed and size of diaphragm opening. In the era of film photography is known as ASA score indicating the sensitivity of the film the film to light. The term ISO in digital photography (referring to the ISO 12232 standard) such as ASA was equivalent to the film, which in this case the value stated ISO sensitivity sensors in digital cameras.

CCD sensor
Sensor, whether CCD or CMOS, is a major component of a digital camera, which is a piece of silicon chip composed of millions of light-sensitive pixels. At the time the picture comes from the lens of the sensor each pixel will capture light energy to come and turn it into a voltage signal magnitude. How sensitive sensor capable of capturing light that is expressed by the ISO scale. Each sensor has a base ISO values / normal ISO sensitivity is the lowest value of the censor is generally equivalent to ISO50 to ISO200 (depending on type and brand of camera). On the value of this normal ISO sensitivity to light sensor is at the lowest level that is needed enough light to get a photo with the right exposure. Therefore the normal ISO generally used only when shooting outdoors in daylight.
To measure the light, call metering, the camera has a light meter system (light meter) that tells how much light will enter the sensor. If the light received by the sensor is too low (sometimes the camera gives warning in low light the LCD screen) then the option exists to keep exposure is to increase the diaphragm, slow shutter, and / or increase the ISO value. In compact cameras are all automatic, shutter and diaphragm value will be determined automatically by the camera based on the results of light measurements. If the condition is less light the shutter and diaphragm combination could not produce the proper exposure, then the ISO value should be increased. If the ISO on the camera mode is set to AUTO, the camera will increase the ISO value automatically. At that allows the camera to be set manually the ISO value, the value of a higher ISO can we choose in multiples of factors ranging from 200, 400, 800, 1600 to 3200. Even now the latest digital cameras began to offer the ability to ISO 6400 extra high sensitivity.
It should be noted that the value of a higher ISO also allows shooting with a shutter speed faster. This is because the high ISO to give a high sensitivity so the camera does not require much light to get proper exposure. Shutter speed is useful to make a moving object appears to be silent. Term, freezing objects (see comparison picture at right). Use a low ISO (eg ISO 100) will make the shutter is fast enough (eg 1 / 20 seconds) to be able to capture the child’s movements. By raising the ISO (eg ISO 800), obtained the value of a faster shutter (eg 1 / 160 second) so that the child was still visible. Sometimes the camera is not equipped with stabilizers, the use of high ISO can also be utilized to prevent a blurry picture. With high ISO is expected to hand-shake is usually prone to motion blur can be avoided because of a faster shutter.
Unfortunately increasing the ISO will also bring negative effects of unwanted. Increasing the ISO sensitivity of the sensor is increased, so that weak signals can be strong. The problem is, the sensors work processes also generate noise that accompanied the original signal. If the ISO is increased, the small initial noise will also be a high. High noise would disturb the results appear and appear in the form of image dots of color are not good to see. These noise problems are more severe if the type of sensor used is a small sensor, such as commonly used in compact cameras. Why? Because of the small sensor size point / pixel is also smaller, and smaller pixels theoretically more susceptible to noise than larger pixels. Hence digital SLR camera produced better images at high ISO, because the DSLR camera sensor using a larger (and more expensive production costs).

Noise on the various types of cameras
What can be done to overcome the noise? First of course as much as possible avoid the use of the ISO too high. But if forced use high ISO, digital cameras today have a noise-reducing system (Noise Reduction / NR) which automatically tries to refine the results before saving the image into a file. Each brand has a camera ‘approach’ for this to overcome the noise. A trademark can be applied to a NR so that the image looks still a little noise but have better detail. Brand B could be used NR too much so that it generates images free of noise but the details go missing. Unfortunately until now there has been no method of NR is able to eliminate noise while preserving detail but with equally good photos. If it needs a lot of making photographic images using a high ISO, you should use a professional camera with a large sensor (2 / 3 inches, APS-C or even Full Frame) which has Signal to Noise ratio is good, so the effect of this noise can be reduced.
Conclusion
• The value of ISO in digital photography states that the sensitivity of the sensors used in digital cameras.
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• If the shutter and diaphragm settings still can not get the right exposure (usually in low light conditions) then it could try to raise the ISO value.
• In addition to shooting at low light, high ISO usage is also suitable to prevent hand-shake blur effect (if the camera does not feature stabilizer) or for high-speed photography, because the high ISO allows the use of faster shutter than a low ISO.
• Raising the ISO value will make the side effects of noise on the image.
• Method Noise Reduction (NR) can be used to reduce the noise that comes up, but ideally the NR still able to maintain detailed as possible so that images remain sharp.
Advice
• Find a camera that has a larger sensor than the camera in general, so the effect of this noise can be reduced.
• Allowing the ISO mode in the AUTO position may be able to make automatic camera raises the ISO value is too high when used in place of the less light, the alternative arrange the ISO value is adjusted manually with the shooting conditions.
• When to use a high ISO, if available, use the RAW file format so that noise reduction can be done in software

Selling Photography to Magazine

through a PC.
• Do not buy a digital camera:
1. can not manually set the ISO
2. wearing false image stabilizer by increasing the ISO
3. has a higher megapixel sensor but the small size -> will be very noise at high ISO