Posted on June 3, 2019 By Phil Jones
NEC P525UL Laser Projector Review – Picture and Sound Quality: Color Modes, Video Image Quality, Text Readability, Audio Quality
Color Mode: High Bright
Color Mode: Presentation
Color Mode: Movie
Color Mode: Graphic
Color Mode: sRGB
The above screenshots are intended to give only a rough idea of the color accuracy for each picture mode. However, when viewed in person the color accuracy will generally look somewhat better than shown in these photos.
There are seven factory color presets. The following observations were generally made with the projector using its factory default picture settings.
For those who want to further fine tune the P525UL color reproduction, there are additional advanced color adjustments including color temperature and RGB balance (contrast, brightness). There is even a Wall Color Correction feature which make it easy to apply color correction to image projected on screen and wall that are not white.
Color Mode: DICOM Simulation
Color Mode: High Bright
The P525UL offers several picture modes and I found the best quality, in terms of color accuracy, to be the sRGB mode. For the screen shots below, the factory default settings were used for SRGB mode except the Lamp mode was set ECO. Since the P525UL includes user adjustments for white balance, gamma and colors temperature so I am sure it could be calibrated to produce a more accurate picture..
Looking at the images on the player above, the first are our test images of color pie charts and skin tones, for the different Preset modes. Next are images of a variety of videos and photos in 4K and HD resolution. Like all our photos, they remain unadjusted for color, so they do not look as good as what the projector produced.
Switching from DLP to 3LCD had a big impact on colors reproduction especially in the brighter picture modes. The P525UL reproduced good reds and very respectable yellows, which is normally a huge challenge single-chip DLP projectors that have relatively low Color Light Output (compared to white light output).
Overall the picture quality for displaying video is very good for this class of projector. While not perfect, the overall color accuracy as very good, with natural looking skin tones, and reasonable image contrast. The P525UL has a dynamic contrast feature than can be turned on or off. However, when turned on it operated much too slow to be of any real benefit for viewing video.
The NEC P525UL image resolution and text clarity are only limited by its native 1920 x 1200 resolution. Even 8-point text was very easy to read in both black text on a white background and with white text on a black background. When my attached laptop PC was set to the projector’s native 1920 x 1200 resolution you couldn’t really ask for any better readability of the projected text.
The 1st photo above shows the full-text readability test image while the 2nd and 3rd images show close-ups of just the upper portion and just the lower portion of the test image respectively. There was no visible color fringing on the text indicating the projector’s lens does not exhibit any significant chromatic aberration. I was able to get sharp focus over the entire image. P525UL is well suited for displaying presentations with lots of small text and fine details in the graphics.
For maximum sharpness, the NEC P525UL can accept up to a [email protected] and NEC’s signal proprietary video processing/scaling chip did a great job downscaling the higher resolution image to the projector native resolution.
The NEC P525UL has a single, 20-watt built-in speaker that can play loud enough for use in a moderately large size conference room but the sound quality is rather ‘thin’ due to the lack of any bass and the sound can become distorted when you turn the volume too high. It’s OK for voice narrations or background music, but less than ideal for playback of video tracks where music is important. This is no worse than what many other business/installation projectors offer in the way of performance from the build-in speaker(s). If higher quality audio is needed, the projector has line-level audio outputs that can be used to connect to a powered external speaker system.
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