Auto Backup Cameras - Choosing The Best Backup Camera System

As far as driving is concerned, an auto backup camera is an additional advantage every driver needs. This system comes in two basic units; the camera (mounted on near the plate license), and the monitor or LCD, which depends on the camera for its signals or feeds. There are two main models popularly used by car owners; these are made up of the hard-wired, and the wireless sensor.

Auto Backup Cameras - Choosing The Best Backup Camera System

Auto Backup Cameras - Choosing The Best Backup Camera System

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Auto Backup Cameras - Choosing The Best Backup Camera System

Auto Backup Cameras - Choosing The Best Backup Camera System

Designed for Everyone

Regardless of your driving experience, you still need an auto backup camera; and the same thing goes for every other driver out there. That is the only way you can avoid all those tight spots in your car park. Accidents can be avoided as long as the right steps are taken towards preventing them.

The Original Hard-Wired

The original hard-wired system has a camera and a monitor linked together by wires. The camera, which is the main part of the system, is mounted at the rear of a vehicle; precisely near the license plate. The power supply comes from the circuit, which controls the reverse light. One of the most popular brands in use is the AUDIOVOX ACA200W. It is cheap and affordable, but a bit difficult to install

The Wireless Sensor

With a built-in sensor, which alerts you whenever you move too close to an object in your car park; the wireless sensor brings more sophistication to the auto backup technology. Although it is more expensive than the hard-wired device, the wireless system is easier to install. A lot of them come with manuals that help users to easily install them without any difficulty.

Choosing the best auto backup camera that is suitable for your driving experience depends on the size of your car, and your budget. You might need to know that these devices have different shapes, sizes, and prices. If you drive a minivan or truck, a night vision LCD is the ideal system you should put your money on. However, a 3.5 inch LCD would do you a lot of good if you drive a smaller vehicle.

Budgeting

An auto backup camera with highly sophisticated features costs more in the market than any other one. In most online stores, a 7" TFT LCD colour rear view backup system has a price tag of about 4.99; while the rear view system night vision goes for .99. This is an indication that there is something for everyone; no matter the budget.

One great advantage of an auto backup camera is that it is waterproof, and is neither affected by water nor unfriendly weather condition. Regardless of the whether, the performance remains stable.

Auto backup systems can be found in most major stores on the internet, and in stores around the neighborhood. A visit to anyone of them will enable you find more of the top brands available, and also give you an opportunity to make your purchase.

Auto Backup Cameras - Choosing The Best Backup Camera System

How to Clean Your DSLR Camera's Sensor

How to Clean Your DSLR Camera's Sensor Tube. Duration : 14.62 Mins.

www.takeabetterphoto.com If your pictures have revealed fine black blurry dots, then you could have a problem with dust on your camera sensor. Cleaning your camera sensor can seem quite daunting, after all it is the most expensive part of the camera and susceptible to damage. As a professional photographer I often find myself shooting in a variety of environments including harsh weather or dusty deserts and all the time i'm changing lenses and having to work quickly, so quite often carefully looking after my camera is not top of my priority list. Getting the shot is! Inevitably my camera sensors eventually pick up some dust, so in this video I show you my methods for cleaning my cameras sensors to restore them as good as new I hope you find this information useful Karl. www.takeabetterphoto.com

Keywords: DSLR Camera's Sensor, Camera Sensor, Clean Camera Sensor

All About Fluorescent Light Flicker in Cameras!

Today more and more of the indoors are lit by fluorescent light sources. And that is why this topic of fluorescent light flicker is becoming more and more important to photographers. You might/might not have noticed that your videos may contain rolling dark bands, falsified colors or blackouts from frame to frame when you shoot them in fluorescent light. This is known as fluorescent light flicker normally termed as flickering. Many people normally confuse this flickering with the flicker or black rolling bar that occurs in frames when you shoot a video of your TV or your computer monitor. But actually has to do with flickering fluorescent light sources.

All About Fluorescent Light Flicker in Cameras!

All About Fluorescent Light Flicker in Cameras!

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All About Fluorescent Light Flicker in Cameras!

All About Fluorescent Light Flicker in Cameras!

Why flickering occurs:-

To understand flickering in video frames, we will first have tounderstand the luminance flicker in fluorescent lights. The mains frequency of commercial electrical power at which fluorescent lights operated, is standardized at either 50 Hz or 60 Hz (frequency at which alternating current is transmitted from power plant to end user) depending on geographical region. 50 Hz AC (alternating current) changes direction 100 times per second as during every cycle out of 50, first current flows in one direction, then in the other direction. Similarly, 60 Hz does so at 120 times per second. The luminance of the fluorescent lights fluctuates according to direction change of AC, instead of being relatively constant. So for example, as the commercial mains frequency in Europe is 50 Hz, I know fluorescent lights in Europe flicker at 100 times per second and as the mainsfrequency is 60 Hz in the US, so in the USA they flicker at 120 times per second. However, with tungsten filament lights the flickering is negligible because the tungsten stays glowing hot and thus giving light even when the current is zero momentarily.

Now, this luminance variation of fluorescent lights is not apparent to human eyes when one looks directly at a scene lit by fluorescent light because of the natural effect "eye" persistence ". Our eyes perceive such lighting as constant. But a video camera is not able to perceive such persistence. Hence, if subsequent video frames are exposed during different periods of the cycle of AC, they will have considerably different luminance, and the resulting picture will therefore appear to flicker when projected.This happens if video frames are captured at a frequency which is significantly different from the AC power supply frequency. For example, in case we shoot a video with a frame rate of 60 FPS in a scene lit with fluorescent light operating at 50 Hz commercial power frequency, the brightness fluctuation of individual frames occurs resulting from the luminance fluctuation of the fluorescent light.

Solution:-

This flickering problem is solved by setting the frame rate of the room such that it should be a divisor of fluorescent light fluctuation rate. For example, for mains frequency equal to 60 Hz, the fluorescent light fluctuation rate will be 120 and thus we should set the frame rate to 15, 30 or 60. This would mean limiting the exposure times of thesensor to multiples of the period of the AC power cycle, which lets the camera gather light over the duration of an integer number of (n) flicker periods. This in effect averages the varying light level over the n complete flicker periods into one image, and since the frame rate is synchronized with the flicker rate, each frame has the same apparent light level. To facilitate this, cameras today come with anti-flicker control. You will need to remember to make the light frequency setting equal to the electrical frequency of the local main electrical system. For example, if a room is set for operation in the USA, which has mains frequency of 60 Hz, but the room user travels to India, which has mains frequency of 50 Hz, then the camera user must changethe light frequency setting of the camera to compensate for the different fluorescent lighting condition, or else suffer from flickering problem.

Where anti-flicker control is not preferred?

There could be cases however, where light levels may be very much brighter in which the required exposure time is lesser than one AC cycle. But such exposure times would not be effective in reducing flicker, because each exposure time would be only a partial AC cycle, and there is no guarantee that subsequent frames would be in the same part of the AC cycle. This is why anti-flicker modality in cameras locks the exposure time to a minimum of 100/120, and thus in very bright scenes, the user has to bear over-exposure to remain flicker-free.

All About Fluorescent Light Flicker in Cameras!