Sunday, August 19, 2018

How to choose a projector?


If you hear any of these situations, continue reading this guide to buying a projector and we will tell you what to look for when buying it depending on the use you are going to give it. If you see that some concept you do not understand, you can go to our dictionary with the characteristics of a projector. But before beginning it is good to emphasize that:
Where some are better for a certain use (like the home theater ), the others will be better for a different purpose (such as to make presentations for example). So let's see what factors influence the decision. And especially where we should go depending on the use we are going to give it.

Let's go for Cheapest 4k projector of this site just in range


How to buy a good projector? Benefits to be taken into account
These are, in summary, form, the characteristics to take into account when buying a projector :

Type of use: Domestic, professional or pocket.
Technology: Each one with its advantages and disadvantages, although it should not be the most important thing to make a decision.
Format: The type of screen or diagonal that the projected image will have natively.
Brightness:The luminous power of the device.
Contrast: The relationship between the lightest and the darkest points. What will allow us to enjoy a greater or lesser depth of colors?
Refresh rate:Eespecially for gamers, is the number of times the image is updated per second.
Resolution: The number of pixels the image has. The more, the better the quality of the projection.
Maximum screen size and distance of the projection.
Connections
Projector size and weight
Extras that count (wifi or Bluetooth connection, built-in TDT ...)
And now we are going to see them all in detail so that you are as clear as possible.

A little history
For the nostalgic, the first projection systems date from the late 19th century, and it was the LumiƩre brothers who managed to popularize it. For that reason, they are considered the parents of the cinema. These first projectors were based on the concept of " retinal persistence ", where they projected images at high speed giving the sensation of movement. The famous 24 frames per second.

Who did not have fun as a child drawing in the corners of the notebooks to see the drawings in motion? Well, that's how the projection story began. And for those who want to see a bit of history, we leave you a video about the first cinematograph and the first films in motion:
What projector do you recommend?
The million dollar question. Well knowing what projector to buy for home theater, the office for presentations or to give away, it is very easy if we know what we want it for. What use are we going to give? Depending on this, there will be some characteristics to which we will give more or less importance. Broadly speaking, the main uses of a projector are:

Domestic use: for home theater or video games.
Professional use: Presentations in classrooms, auditoriums or meeting rooms.
Portable (pocket):  That allows us to move in a comfortable way.
As we will see later, depending on its use and the conditions of the room (ambient light, distance from the screen ...), we will prioritize more features and renounce others when choosing our ideal projector.

Types of technology
Although technology should not be a determining factor in the choice, it is good to familiarize ourselves with them. They are classified into two groups:

Image projection: DLP vs LCD vs LCOS.
A light source used:  traditional lamp vs led vs laser.
If you go to inform you about these technologies, you will discover that there is a fierce battle between 3LCD technology, championed by manufacturers such as Sony or Epson, and DLP technology patented by Texas Instruments that use manufacturers such as Optoma or BenQ. Other brands, however, have decided to include both technologies in their products. This is the case of LG or Acer. This means that both technologies are mature enough and offer great results, especially in the mid-range.

If you want to delve into these technologies, we recommend reading this article about them:

After this roll ... What technology to choose?
If you have read the previous article (and if we do not tell you now), you may have noticed that the choice of technology has an influence on the source of lighting used.

The traditional lamp offers a better brightness, ideal for professional environments where a plus of luminosity is required. But we must be aware that we must replace it.
In a led projector, to get more brightness we should go at a higher price. And remember that the lumens come in ANSI for a better comparison.
And if we opt for a laser projector, or a hybrid laser / LED, prepare the pocket. Of course, prepare also to have the best experiences currently offered by the market.
In terms of how they project the image, whether LCD, DLP or LCoS should not influence our decision. Rather we should be guided by the other features that we will see below.


Format
There are many aspect ratios, but the two most common are 4: 3 and 16: 9 (panoramic). Here the choice of format is very simple:

16: 9 for domestic use, since the content that we go to the projector will be in that format (movies, video games). Television is usually in 4: 3 format. That's why in the movies we see the black stripes above and below the image.
4: 3 for professional use, since it is the usual format of computer screens and slides of PowerPoint presentations or similar.
A projector with a native format can project in the other format, but what it will do is adapt the image. That is why it is recommended to choose the format of the content that we are going to project in a majority way.

And here we leave you a very funny video that shows us how the panoramic and Cinemascope formats were born. Developed by the film industry to distinguish itself from television:

Brightness
Perhaps the most important point on which we should look, the light power. This is measured in ANSI lumens, a standardized measure to compare brightness. And as is evident, the higher the power, the higher the price.

Keep in mind that there are different ways to measure the lumens. Led lumens or pico lumens adopt different values. Many brands in their models do not indicate brightness in this standardized measure. One of the tricks used to get better in the photo. And cheat the consumer, why not say it. So try to always come in ANSI lumens for a correct comparison.

What we must think about to choose the right brightness is the environment where the projector will be used, whether or not there will be ambient light. Also, something in the distance that there will be with the screen or the wall since at a greater distance the luminosity is lost. As in the size of the projected image, the higher the brightness loss. But mainly stay with the idea of ​​the level of external light that will enter or not in the room to choose the right brightness. As a general rule we can say that:

For a domestic use with the lights off, starting at 1,000 lumens already begins to be exaggerated.
However, for professional use in rooms with ambient light, we will need to go at least 2,500 lumens. And from there up. That's why, for professional use, LEDs tend to be short.
On the other hand, here we would like to emphasize that traditional lamps, although much more powerful than LEDs, suffer from wear and lose their luminosity over time. If someone has ever changed a lamp of a projector sure that it will have noticed the difference with the new one.

Contrast
What the contrast measures are a relationship: the maximum difference between the lightest and the darkest points. A ratio of 1,000: 1 means that the lightest point is 1,000 times more than the darkest point. It is important that this parameter goes hand in hand with brightness. If we have many lumens but the contrast is low, the quality of the image suffers. Resulting in a projection or discolored image because the impact of light on the screen affects the intensity of black.
More topic:

Home Cinema - Buying Guide for Home Cinema Projectors

Saturday, August 18, 2018

Home Cinema - Buying Guide for Home Cinema Projectors


Home theater projectors make movies and sporting events feel live and multimedia projectors greatly enhance your presentations and lectures. No matter what kind of projector you need, you will find within the home cinema more than enough product options, as well as installation of home cinema , screens, home cinemas of various brands, such as Yamaha home cinema , Thompson home cinema , 


  • Sony home cinema or Panasonic home cinema and
  • Watch movies or enhance your presentations
  • Evaluate the specifications of home theater projectors
  • Install your home cinema projector
  • Find projectors on eBay
  • Buy projectors with confidence



Watch movies or enhance your presentation:
If you want to have the largest possible TV screen in your living room or take your projector to business meetings, decide how to use your projector before buying. 

Watch your favorite movies or TV shows with a projector.
For some, a large TV screen is not big enough. Take your home cinema system to the highest level with a BenQ home theater projector , InFocus, Sharp, Optoma, Panasonic, Mitsubishi, Proxima, MEC or ScreenPlay. These work well for home use, allowing you to create a visual immersion experience with a widescreen or high definition video projection on a wall or on the screen. 

Buy an HDTV compatible projector if you receive high definition programming from your satellite or cable television provider. 

Take your projector to work
Multimedia projectors work the best for business professionals who need visual aids for their presentations and conferences. Connect your laptop, TV, HDTV, DVD player or VCR to the projector and play audio and video or text and image-based presentations. 

Compared to home theater projectors, multimedia projectors, such as the Sharp PG-B10S and Epson PowerLite 81P, offer a smaller size that allows you to transport them from meeting to meeting. Many also include a projector carrying case to protect and store it. A remote control and a built-in laser pointer that can give you even more flexibility and freedom. 

Look for home cinema compatibility if you want to use your multimedia projector to watch movies.
Decide what projection technology you need 

The projectors use liquid crystal display (LCD) or digital light processing (DLP) technology to process the light and convert it into an image. 

LCD projectors: Lowers the lights and provides a presentation with vibrant colors and shapes and detailed information. LCD projectors pass light through three small LCD panels, creating bright images suitable for poorly lit rooms or auditoriums. 

DLP Projectors: DLP projectors use a digital signal that makes them weigh less than LCD projectors. They offer video performance without problems, high contrast proportions and little pixilation - perfect for use with home cinema. 

Evaluate the specifications of home theater projectors

Evaluate the specifications of home theater projectors
Compare the specifications of resolution, brightness, contrast ratio and weight, as well as the optional features when you buy a projector on eBay. 

Projector resolution
The projector resolution is the number of pixels produced by a projector. Expressed as two values, the first indicates the horizontal pixels and the second number the vertical pixels. For example, 800x600 and 1024x768. The higher the resolution, the sharper the image. 

The HDTV compatible projectors will need to transmit high quality 1080i HDTV signals (1920x1080 interlaced scan resolution) and / or 720p (1280x720 progressive scan). 

Brightness of the image
The brightness or light output, measured in lumens of the American National Standards Institute (ANSI), determines how well you can see the images projected in a well-lit room. More lumens produce a larger, brighter image. 

Contrast ratio
Video projectors measure the difference between the brightest and darkest sections of an image with a ratio. For example, 600: 1 or 2,220: 1. Projectors with higher contrast ratios produce better and more defined images. 

Projector weight
Projectors can weigh less than 7 pounds (3.15kg) or as much as 20 pounds (9kg). Look for a lightweight projector if you want to use it outside the home. 

Special features
Home theater projectors have a wide variety of functions, including:
Zoom: Position yourself in the center of the action by zooming in on the image.
Picture-in-picture (frame in frame): Watch more than one channel or video source at the same time with picture-in-picture . 


Movie mode: Activates the cinema mode to achieve a more intense color and less noise.
Do a keyword search for the features that you consider most important when you shop on eBay.

Install your home cinema projector
Turn the home cinema of your dreams into a reality by installing a home cinema projector on the ceiling with ceiling mounts or place it on a flat surface like a central table or on a shelf.
Ceiling mounting of your projector: Install the home theater projector as part of your great home theater system and use it whenever you want. You will need to pass the power and signal cables through the walls to prevent them from hanging. 

Keep the portability of your projector in mind: Install the projector of your home cinema wherever and wherever you want to use it. Buy a standing screen and you will gain the ability to keep your computer out of sight when you have visitors. 

Either way, your projector and screen will occupy less space than a large TV screen and you can achieve a great image. 

Make the basic connections of the projector
The home cinema projectors take the signal from your home cinema system and show the image on the screen. Just connect the projector to your satellite receiver , tuner or DTV receiver , cable box or DVD / VCR player. 

Home cinema projectors usually come with multiple input connectors, allowing you to connect them to the computer or video game console. 

Install a screen
Use an empty white wall like a screen or buy a separate screen to see the clearest and cleanest video 
 possible. 

The screens come in three types:
Projector screen mounted on the wall: hang your screen on the wall.
Retractable projector screen: mount your screen from the ceiling and extend it when you want to use the projector. 

Standing projector screen: take out your screen when you need it.
Projector screens come in a variety of sizes from 90 to 120 inches (2.28 - 3cm) in diameter. To find a screen that fits your room, measure the length, width and depth of the area where you plan to put it. Sellers include screen dimensions in the item lists and the characteristics of your space can help you determine the size of the screen. Also think about sitting at least 15 feet (4.5m) from the large images if you do not want to feel in the front row of the cinema. 

The size of the image will depend on how far you place the projector on your screen. Make sure you like the installation of your projector before placing a folding screen with ceiling or wall mount.


Find projectors on eBay
Once you know what kind of projector you want, look for items on eBay. For home theater projectors, start by entering the electronic items portal and click on home theater projectors . For multimedia projectors, go to the portal of computers and networks and click on the link of projectors under monitors and projectors . 

Categories: The list of categories that appear on the left side of the page will help you optimize your lists by the type of product. You will find links for cables and accessories , screens and projectors and projectors material . The more you search and deepen the site the more you can optimize your choice by LCD or DLP and then by brand. 

Search by keywords: Search for specific words in the eBay category lists. For example, if you want to find a DLP home theater projector, write "DLP home theater projector" (without quotes) in the Search box. Click on "Search title and description" to expand your results. Visit the eBay Search Help page to search with keywords. 

If you've found exactly what you're looking for, try eBay Stores , tell the eBay community what you want, by creating a message on Sell it or Save your search on My eBay. eBay will send you an email when your choice is available. 


Buy projectors with confidence
Before making your purchase, make sure you know exactly what you are buying, research your seller and understand how eBay and PayPal protect you. 

Know your purchase
Read carefully the details of the lists of articles
It includes shipping cost in the final cost. If you are going to spend a lot of money, make sure that the seller will secure the item when you send it. 

If you want more information, contact the seller by clicking on the link "Ask the seller" that is in the profile of the seller. 

Always make sure you complete the transaction within eBay. Transactions made outside of eBay are not covered by the protection program. 

Do not pay for your eBay items through Western Union or MoneyGram. These payment methods are not safe when paid to a stranger and are not covered by the buyer protection program of eBay or PayPal. 

Meet the seller
Investigate the seller to feel confident about each transaction.
How many votes does the seller have? How many transactions have you completed? What percentage of positive votes do you have? 

What do buyers say in the comments of their votes?
Most users who sell more on eBay, work like a normal store and have return policies. Does the seller offer a refund guarantee? What are the repayment terms? 

Buyer protection 
In the unlikely event that a problem arises during the transaction, eBay and PayPal are there to help you. 

PayPal allows you to pay without the seller knowing the number of your bank account or credit card. In addition, with PayPal Buyer Protection, your purchase is insured up to € 500.
Learn about our security tips to learn how to protect your account. 

More Related Topic: 

  1. How To Choose Video Projector: Shopping Guide
 

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