In this article, we will look at the features of choosing a projector, which is used by artists and room designers to transfer various drawings and sketches to the wall.
Currently, among the owners of premises who are planning repairs, the popularity of painting on the walls of a large area is growing rapidly. This is a completely natural and understandable process. Rooms with original author’s drawings or images made by professional artists on the walls become especially attractive and unique.
To transfer an image from a sheet of paper to the wall as accurately as possible, today there are different ways. Of all known, the method using a projector is considered the most effective. The use of projection equipment has a number of important advantages:
- simplifies the procedure for transferring a picture,
- reduced time to complete the work,
- the requirements for the professionalism of the specialist performing the work are reduced,
- the optimal scale is selected for the most efficient use of the wall surface.
The first and most important indicator that you should pay attention to is the projection distance of the projector. According to this parameter, all projection equipment is divided into the following categories:
- telephoto with a projection ratio (PO) over 2.0,
- mid-focus or standard with software from 1.3 to 2.0,
- short-focus, where software is 0.8 … 1.3,
- ultra-short throw, in which PO is less than 0.8.
PO or Throw Ratio is the quotient of the distance between the projector and the wall divided by the width of the screen. As a rule, in the technical documentation this indicator is indicated as follows – 0.5: 1. This means that this projector can expand an image with a width of 1.0m from a projection distance of 0.5m.
In our case, you need to buy a projector with a minimum throw ratio. By the way, such projectors are also called wide-angle.
A short-throw projector at the same distance from the wall deploys a larger image area on the screen than a long-throw model. In addition, an important advantage of wide-angle projectors is that the artist does not block the light flux from the projector to the wall during work, thereby not obscuring the projected image.
This parameter is of particular relevance when it is necessary to paint walls in apartments and cottages. Sometimes, due to the small distances between parallel walls, the image is divided into cards and then transferred to the wall in stages. This method of successive image transfer in separate parts has a proven technology, which can be found using the appropriate search on the Internet.
In the ABIS Company catalog you can easily sort the projectors by this parameter by activating the appropriate boxes – “ultra short throw projectors” or “short throw projectors”.
The next most important parameter is the resolution of the projector. It indicates the number of points of light, also called pixels, which make up the image on the screen. For example, the resolution of a FullHD projector is marked as 1920×1080. This means that the horizontal line on the screen consists of 1920 points of light (pixels), and the vertical line of 1080.
The higher the value of this parameter, the clearer and more detailed the image on the screen will be. Low-resolution projectors will have a “blurry” picture on the screen and small details will be indistinguishable. However, when choosing a model for this parameter, it should be borne in mind that the higher the resolution of the projector, the greater its cost.
The strength of the luminous flux
Projector brightness is a critical parameter when choosing a projector screens for wall painting. This is due to the fact that the master performs his work in the daytime under conditions of sufficiently active artificial or natural lighting. Therefore, the luminous power of the projector must be sufficient to form a clear image on the wall in such conditions. The parameter is measured in ANSI lumens. A projector with a brightness of 3000lm can be considered the most suitable for working in an illuminated room. Of course, if your work will proceed in dark conditions, the requirements for this parameter can be significantly reduced.
As with projector resolution, increasing the brightness of a projector increases the cost of projection equipment. This is due to the fact that high brightness increases the power consumption of electricity and places special demands on heat dissipation.
Projector contrast is another parameter to consider when choosing a projector for wall painting. It is defined as the ratio of the brightest whites to the least bright blacks on the screen. Projectors with this setting set to a low value will display black as dark grey.
When choosing your model, you need to focus on projectors with a contrast ratio of 10,000:1. This value provides a comfortable work for the artist.
Availability of a USB connector
The ability to independently read information from a “flash drive” will greatly facilitate your work. Otherwise, otherwise, in addition to the projector, you will have to bring not only the projector, but also a laptop in which the image for transfer is recorded.
We have listed the most essential parameters and their values that a wall painting projector should have.
But there is another essential point that you should know – it concerns the design of the projector. Do not purchase projection devices that use mirroring. Their design is such that the image unfolds on the wall with some indentation from the floor, approximately half a meter. Below is a photo of one of these projectors.
The purchase of a wall painting projector will significantly increase the efficiency of your work and improve its quality, but the cost of such equipment is at least 80 thousand rubles.