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AAXA P4X - Image Quality

Posted on August 6, 2013 by 

AAXA P4X Pico Projector - Picture Quality

To date, pico projectors have not proved to be anything approaching "home theater" quality, when discussing the actual picture.  It is no surprise then, that the same is true of the P4-X pico projector.  There are a fair amount of image controls, but don't expect a "near flawless picture".  Keep in mind, though, you are going to have to opt for something a great deal larger and heavier (at least 3-4 pounds) to get something dramatically better, and one that is also a real home projector costing far more.

On the "bright side" note that with approaching 80 lumens plugged in, and almost 45 lumens on battery, the P4X pico can do a respectable job of showing your photos and videos. the AAXA P4-X also does well enough for running some business presentations to very small groups of 1 or 3.  In fact, in a darkened room, you could (plugged in) do a respectable 40" diagonal image, with decent color.

kin tones, tend towards red, and a bit ruddy.  They start out very much so, but you can dial down saturation, and adjust color in the User mode, or switch to cool color to end up with respectable color quality, rivaling basic business projectors in their average, but not very best modes. The Bond "bar" image above is a good example.  In this image I have already dialed down saturation a good bit, and color a little.    Not a bad image, though his face is still over the top at least on my Macbook screen.  Further reducing saturation would have further improved the photo.  I didn't notice any real difference in photos coming from the USB input compared to those run from images on the micro-SD card, although we do not actually meaure color for the P4X or other pico projectors

There are three Picture modes, plus User:  Standard, Dynamic, and Mild.  Default is Standard, but Mild is probably the best place to start if you aren't going to make an effort to really adjust the projector's controls

Overall, I was able to get satisfactory color for watching a movie such as Casino Royale.  Again, the point is, for a pico projector this one is reasonably watchable, reasonably good for movies, photos, and presentations. For pico projectors in general, another generation or two is needed, with emphasis on picture quality before these little guys rival the "big boys".

Color Accuracy

This projector's color controls aren't exactly what you would hope for to calibrate this projetor, but they do provide enough adjustment to come up with reasonable color accuracy.  Again, don't expect this to rival even an $600 to $1000 home entertainment projector, but it is reasonably watchable, much as "Brightest" modes are, on many home projectors.

The images below show the effect of different color saturation settings, starting first, with the default setting of 50.  I probably should have picked an image that didn't have the menu running right through James Bond's face - oh well!



Click Image to Enlarge

The color on the last one above looks pretty respectable in terms of color saturation, although the colors are a touch yellow.  By comparison, above it, the image with saturation at 34 is still a little oversaturated, but I had also messed with the color here, and it has the best skin tones, and the suit looks better.  All considered, the settings for the middle image, but with saturation reduced to 29 or 30 works rather well.

Looking at the color chart above (default), reds are oversaturated, as we also see in the other photos. Yellows are a bit murky and cyan definitely off a bit, blue with a touch of red (shift toward purple), and green with too much yellow... Ultimately though, for a pico projector, if you are willing to work the adjustments, the picture should serve you well enough as demonstrated by various images in this review.

In this image above, without color adjustments, skin tones are generally decent, but look at the pink/red of the bricks which start out, fairly neutral gray on the test disc. Again, due to an oversaturated red.

Color 29
Color 34
Color 50


I've run video from both the USB port (it works) and from my Macbook and my iPad via HDMI.  There is no way I can figure out how to run photos, sound, or video directly from an iPhone or itouch via the USB, which is for things like thumb drives, however all works just fine when using the P4X projector via the HDMI, as intended.  If there's an issue, it's primarily that the resolution of this projector is only WVGA like many picos.  Officially 858x480 That's a hair wider than the 854x480 that is the standard for those old fashioned DVDs. In other words, from a pixel basis, the projector has only about 1/3 the pixels of a standard 720p HD video, and less than 1/6 the pixels of a 1080p video. Hey we survived the '90's and most of the first decade of this century with standard DVDs.

For all that "criticism" it runs videos just fine.  Twenty minutes of viewing Caddyshack worked out just dandy.  You certainly will get better resolution and color on an iPad, but with the lights out, and the P4X projector plugged in, I was able to enjoy the movie on a screen size a bit bigger than 40" diagonal, and could have gone a little larger.  At 40 inches diagonal the brightness was approaching that of a typical home theater projector when watching a movie. 70 lumens on 40" diagonal is the equivalent of about 375 lumens on a 100" diagonal screen.

Bottom Line Image Quality:  Not bad image quality performance for a pico projector.  In fact much better than many picos we've reviewed over the last 3 years.  Still, if you are looking for excellent image quality, the P4X isn't quite going to get you there.  Nor will any other small pico I can think of.   Even the best of the 300 - 500 lumen "pocket" pico projectors are still struggling to get great color.

Is the quality good enough for a business presentation with some photos and a video?  I don't see a problem, as long as you have lighting control and don't try to show anything that requires precise color.  Of course, if you are making the most important presentation of your life, find a better projector that's not a pico, or a pocket.  -

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