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As this article went to publishing it was reported at HD Library that Panasonic is providing a $1,000 USD rebate and one member found this projector for $2,749 USD. This is nearly half the price of projectors that can do better and taking all of its performance points into perspective this price level definitely hits the bang per buck category of entry level gear representing great value! ![]()
Serial #SG6640008R Warranty: 1 year parts and labor Summary: Entertaining big screen pictures at 1080p/24, with the widest installation capability for a front projector
Transmissive LCD projection technology is well over a decade old using red, green and blue LCD panels. No color wheel is required and therefore no concerns over rainbows; those are a DLP issue only related to the size and expense of 3 chip capability as well as supply and demand of the devices. In the early days fill factor of the pixels was quite large, creating a screen door effect that could not be missed with less than 8 screen heights. In this area transmissive LCD has improved by leaps and bounds, becoming one of the hallmarks of the Panasonic line; no pixels to be seen at even unreasonably close viewing distances. This technology does come with one thorn though that has yet to be tamed, natural dynamic range. To produce black, transmissive LCD has to block the light trying to pass through it, which remains difficult and results in a poor black response. Transmissive LCD also takes a hit in peak light output due to inefficient pass through losses of the LCD panels. This absorption of light, regardless of image, also requires the LCD panels be constantly cooled lest they or their neighboring optical parts suffer a melt down. One way to improve dynamic range is to employ an auto iris and manipulate the gamma response. Most call this a "dynamic iris". Many are using this technique to enhance the viewer's perception of dynamic range while also improving spec numbers for higher contrast ratios. For a proper ISF calibration, the feature must be turned off or the numbers will never make sense; the feature changes things that much. Many transmissive LCD products use this process to create a competitive perceived dynamic image. This inspired HD Waveform 10 - Dynamic Iris and Gamma, which uses the PT-AE1000 for the measurements. Please see the above article for the specifics.
There are so many features and options related to video setup in addition to the 7 presets provided that it made my head dizzy. Out of those seven, four of the presets engaged a function making it known by a motorized sound and a significant reduction in light output. The three presets having the highest light output are CINEMA3, NORMAL and DYNAMIC. I went with NORMAL and selected a color temp that appeared correct. First up was King Kong on HD DVD. While I was mesmerized by my first 1080p experience, I also found my first problem; some of those yellow taxi cabs showed signs of clipping where bright yellow was clearly white instead. Next up was my gaming PC, which brought out the second problem: loss of clarity. I adjusted focus several times and then tried turning the iris off and that helped. Nonetheless I found myself looking for an expected level of sharpness and detail at the pixel level that could not be found. Going to a PC game though, I was floored and remained floored for days due to the level of detail provided with another 1,152,000 pixels to work with, yet I also found myself frustrated when using things such as forums and web surfing. Time for a calibration to hash out this experience!
Pictures are taken with a digital camera, which has limitations of its own inducing artifacts that are not there. The main purpose of the pictures is to provide a reference for the review, regardless of quality, and provide a fair impression of actual performance as compared to other pictures to which they may be compared.
For this projector there is practically no fill factor. There is little to be seen between the pixels even when you are within a foot of screen. With LCD you are focusing on the panels and they have enough depth that when you are setting focus there are three steps that appear to be in focus. Without clearly visible fill factor at the screen it could be difficult for the novice to discern which of the three is correct as the focus pattern itself has an artifact adding to the elusiveness of this adjustment; I chose the middle focus point. If your desire is short viewing distances and big pictures without being able to see the technology, this one excels.
At 1920 you will also note the highly saturated red and blue chroma response bleeding the primary of red or blue in the 1920 pattern removing any trace of the secondary cyan or yellow. This was an odd response and during the review it was not as if this artifact reared its ugly head with video or PC graphics. As noted earlier, video does not support a 1920 chroma response so it would seem safe to say that this would not cause a problem with a video source. On the other hand, if PC graphics are going to be a primary source this could show up with the right image. From experience this type of response is related to filtering of a multiple line response also representing a specific reoccurring frequency. I have calibrated and tested many displays that could not pass the multiple alternating black and white single pixel burst at all providing only a grayed out field in it's place, yet could pass (not a correct response mind you - but pass) a single pixel white or black line from a pin pattern or the Sencore focus pattern of alternating E's formed out of single pixels. This is yet another example of how just the right image may be required to show the error. The component 1080i response does not have the color bleed error at 1920. At 960 it does not have the clear pattern of red and cyan or even the ghostly blue and yellow response of HDMI. The 1920 luminance response remains consistent with HDMI. Key point for this test is that there are projectors on the market that pass these patterns correctly via either connection type. Looking at the reference response you can clearly see each and every line and pixel of either luma or chroma information. This particular reference also shows the difference in pixel visibility between a full 1920x1080 chip DLP and this LCD. On the component 1080i image I happened to catch a clear shot of the LCD pixels; as you can see the fill factor is overwhelming good. While one might suspect that the differences in how these images were captured could easily account for what you are seeing, for the record, they are a fair facsimile of what you would perceive with the naked eye. The lack of detail and soft response is inherent of transmissive LCD technology. While the projector clearly does 1:1 pixel mapping, this test not only shows response errors but also provides clues as to why a full chip DLP, as an example, would outperform it for detail and sharpness. At the viewing position, you cannot clearly make out pixels or fill factor of the DLP any more than the LCD, yet the perceived difference in response for these patterns would be strikingly clear. With real images you would note a difference in sharpness and detail.
Calibration Notes
NORMAL Gamma Pre-calibration NORMAL Gamma Post-calibration With the iris turned off the gamma was actually not bad for pre-calibration. The contrast had to be turned down significantly to even-out the steps and open up the peak white from 90 to 100IRE. This compression of gamma at the top in most cases infers a large color temperature error as well; yet another reason to try and obtain a proper response.
NORMAL Delta C Pre-calibration NORMAL D65 RGB Chart Pre-calibration NORMAL Delta C Post-calibration NORMAL D65 RGB Chart Post-calibration While not provided when I looked at the data charts, I could see the light output dropped by half creating a significant loss; so significant that I looked up a few front projection displays for comparison and indeed the PT-AE1000 was rather unique. It is commonly known that calibration will cause a loss in light output and a 25% drop is not unusual when bringing the two stronger primaries back into spec. Looking at the RGB chart you can see that both green and blue output were dramatically increased over red. Red is the Achilles heel of all arc lamp based displays as it is the primary with the least amount of light output. All display products have a weak primary so no big deal. What this means for an arc lamp source is to increase light output for sales and marketing you turn up green and blue since they have more light output to offer which ends up pushing the color temperature towards cyan. This creates a fairly common marginal error and correcting it has marginal impact on light output. For the Panasonic LCD this was not the case. What we see here is a heavy handed boost of green and blue creating horrendous cyan errors to provide a competitive bright image in the market. While I did not measure the results I did return the contrast back to pre-calibration which helped boost light output quite a bit while keeping things under some control. I tried returning the color temp to preset creating a huge boost in light output but that made white clearly cyan shifted. Delta C errors typically come in two peaks for many consumer displays. As mentioned earlier, the response was difficult to tame but I gave it another go and managed to squeak out the final shown here below with two strong peaks and a fairly good valley below 1, which also happens to be in the prime area of most video levels for an image. In the world of consumer displays this is an average response. NORMAL Delta C Post-calibration (second attempt) NORMAL D65 RGB Chart Post-calibration (second attempt) Look at all three RGB graphs and you will see red never flattens out and remains a humped response regardless. I will not say this was the last word on a proper color temperature calibration but looking at the forest rather than this one tree the meadow has more problems than this one.
The product does not provide any means to isolate the red, green and blue color channels to professionally check color decoding. The PT-AE1000 appeared to pass within the limitations and errors created when using color filters for this test.
HDTV BT709 Color Space Pre-calibration HDTV BT709 Color Space Post-calibration For NORMAL using out of the box settings all three primaries fall way outside the HDTV color space. Currently this is being used as a sales marketing tool with tag lines of deep color, rich color, lifelike color, etc. While Deep Color is a new and valid technology, there are currently no sources available. This projector does not support the standard nor meet that vastly larger color space specification. In this case, and for a while to come, this is nothing but an artificial expansion of standard color space and while not accurate more or deeper color claims are perceptually valid. This was by far the easiest alignment and it still wasn't all too easy. It provides this neat cursor that makes you think what you are adjusting is what you will get once you press enter but the projector goes through a processing sequence for your new target and you find that the target moved. Ultimately this became a song and dance of making a small adjustment and pressing enter to see where the target would end up. In the end I was able to achieve an overall satisfactory response but was unable to get the red on target for HDTV or EBU. If SMPTE-C is your target the red does line up quite well for that specification.
Magenta and Green Error Reference Response for All Colors The Panasonic shows a very clear and visible error with magenta and green in the 2-3 pixel range of size. The rest were fine. Note the error between magenta and green only occurs when magenta follows green (to the left of green) as well a difference in error between magenta and cyan depending on if it is on the right or left of green. These differences are not uncommon when an error shows itself. In the reference image you can slightly detect the same type of error between magenta and green, yet this was only 1 pixel in size with a marginal error in color allowing it to blend well, making it difficult to see from the viewing position.
With the Dynamic Iris OFF, and using a calibrated D65 light output at 96 lamp hours, I obtained 367fl at 100IRE and .522fl for 0IRE yielding a contrast ratio of 703:1. On the surface that is a good number. In reality it is somewhat poor because in a real system the perceived contrast is directly related to how black your blacks are. A CRT can easily have a lower contrast ratio but perceptually beat the pants off of a higher one because it can do inky jet blacks. In the world of performance front projection and micro display technology this is an average response. Please refer to the article, HD Waveform 10 - Dynamic Iris and Gamma, for an in depth look at this feature.
Due to the extensive zoom range you have some variation in light output there as well. When set for the widest setting, the light path through the lens is spread out across the surface improving pass through efficiency. To take advantage of this will require the projector be placed quite close to the viewing screen. A disadvantage to that is that you take a hit in focus uniformity which means the edges will have a different focal point than the middle.
Lamp replacement will come. The great thing is the projector will tell you at 1800 hours that you ought to order one with a 30 second message when you turn it on. After 2000 hours the message remains until you make it go away by pressing any button. If mounted on the ceiling you will be pleased to hear the lamp cover is on the top (or in this case the bottom), which is the part you see when looking up! The customer menu allows you to reset the lamp timer.
As a calibrator there is a point where you begin to realize that if science is not the products strength then you mix science and art for a better perceptual picture, which is exactly what I ended up doing for my large screen. I tried returning to the out-of-box setup conditions, which greatly improved things overall on a perceptual level, and is why insiders call that the "sales mode"! Knowing how wacky things were though I decided to keep the color temp settings and simply boost the contrast back up to 0 which definitely pointed things in the right direction without cyan whites. This did create a dramatic perceptual and real world improvement. Even in this mode my experience of better performing real world contrast ratios still left me disappointed with any scene that veered towards darkness. I was perceptually fooled only with bright images, yet even those retained a subtle flat look to them. Staying in this mode I watched The Devil Wears Prada on Blu-ray, Superman Returns on HD DVD and the first hour of West Side Story via HDNet and cable. All were entertaining. One strong characteristic came out though and that was a lack of color detail, creating a smeary poorly-focused look, very pronounced in saturated primary colors.
This was found on the website: In the brochure I found the following: Pure Color Filter Pro" for Professional-Level Color Reproduction. We equipped the PT-AE1000U with a specially developed optical filter that optimizes the light from the UHM projector lamp, helping to achieve deeper blacks while improving purity levels in the three primary colors (red, green and blue) that compose the image. It combines with our multilayered vacuum plating technology to create what we call the Pure Color Filter Pro. This advanced filter system improves color purity to such an extent that the color gamut is expanded nearly to the level specified in the Digital Cinema Initiatives (DCI)*4. To viewers at home, this means you see the kind of bright, vibrant colors and deep, rich blacks that make for great entertainment. The Color Filter Pro appears as the most logical candidate and seeing a picture of this optical device in the brochure it is also quite dark inferring a loss of light. Ultimately I could not test this setting at its full potential due to the enormous loss of light. That by itself will prevent it from looking comparable to any of the other displays I have in the house, regardless of technology or form. I decided to set up the product for a 77" screen and disregard the light problem. Images improved on many subtle levels, especially the dark scenes where instead of a blue black I had some black blacks and a better sense of color rendition. Based on what I was seeing, this mode appears to represent the product at its best. To take advantage of this mode will require a higher than normal gain screen with a small size and easily over 2.0 for larger screen sizes.
Conclusion One potential confusing element in this story is the benefit of calibrating. It is clear that a full calibration correcting all aspects of the product is not going to be in your best interest unless you are shooting for the CINEMA 1 mode. That said I did find value by mixing some experience and art into the process. An ISF calibration does not stop at the display either covering your sources as well. In essence we are calibrating the complete video system from source to screen confirming you are getting the best response possible.
If you are a performance enthusiast willing to go through the hassle of a correct installation and screen while keeping your viewing distance at 3.2 screen heights or more, why not consider imaging science 720p instead. Due to the rampage for 1080p those prices have dropped. A 1080p response is just one aspect of quality imaging and a close viewing distance is required for the payoff. You can still get the Samsung SPH710AE from $2,200-2,400 USD on line and that is a reference projector designed by one of the best known names in the business synonymous with performance; Joe Kane Productions! This is top notch performance on a budget. Bear in mind that for Samsung, this projector is considered an old model and out of stock. All that remains is what A stock (new factory sealed) is left in the distribution system or is being sold as B stock (refurbished). If you are a 1080p performance enthusiast willing to go through the hassle of a correct installation and screen then why not spend $1-2K more and go with clearly better performance as well. Check the upcoming BenQ W10000 review or the Optoma HD81 which one of our authors recently purchased. I have yet to review reflective LCD technology. Greg Rogers did a review on the Sony Pearl for Widescreen Review and there were some response similarities in the technical portion. Its reputation is also based on the dynamic iris technique.
Note: As this article went to publishing it was reported at HD Library that Panasonic is providing a $1,000 USD rebate and one member found this projector for $2,749 USD. This is nearly half the price of projectors that can do better and taking all of its performance points into perspective this price level definitely hits the bang per buck category of entry level gear representing great value! Posted by Richard Fisher, May 7, 2007 8:32 AM Reader Commentarym-roll • May 8, 10:55am I have a few comments about this review. First, the CR calculations are incorrect. You divide the 100 IRE lumen output by the 0 IRE lumen output to calaculate On/Off CR, not multiply it. Second, there must have been something wrong with your review unit, as there shouldn't be a problem with a 480p input over HDMI. Mike... Richard • May 10, 7:22am First, the CR calculations are incorrect. You divide the 100 IRE lumen output by the 0 IRE lumen output to calaculate On/Off CR, not multiply it. Considering how many eyes have seen this review and another article in which the same error was made you deserve kudos for catching it and for reporting it! It is something rarely checked in calibration as the display and viewing environment is what it is and in my experience that typically will not be changed. Original With the dynamic iris feature, the Panasonic potentially comes with two measurements. When a projector provides that I measure the response with the dynamic iris turned off, this is a simple measurement of a 0IRE raster and 100IRE window after calibration. Edited This measurement is provided for the purpose of comparison only to other reviews of front projectors to illustrate true contrast ra... m-roll • May 10, 8:04am It is something rarely checked in calibration as the display and viewing environment is what it is and in my experience that typically will not be changed. Quite true. I never check it for an installation, but have done it for projector reviews and in my own controlled environment. It's commonly included in projector reviews due to the constant one-upmanship of each new projector boasting a higher CR. Thanks for making the correction. The actual formula is PEAK - MIN divided by MIN = contrast ratio:1 peak equals maximum light output and MIN equals minimum light output Can't say that I've seen that formula before, but it has little value as it would only change the ratio by 1. This would likely be less than the error of the probe or light meter used. If applied to your calculated CR, it would reduce the total from 703 to 702. Also, using a calibration probe for on/off CR will result in muc... Richard • May 10, 12:16pm Can't say that I've seen that formula before, but it has little value as it would only change the ratio by 1. Me either but that appeared a number of times. We both agree that including MIN in the calculation is irrelevant to a darkened room but under ambient light conditions it can make a huge difference. Think of a stadium display during the daytime... Also, using a calibration probe for on/off CR will result in much lower CR than could be obtained with a light meter that can accurately read well below 0.5 ft-L and is less susceptible to overload on the high end. I will have to look into that and find the money. Without writing that contrast ratio article now it does appear that the difference in contrast ratio is not as relevant as one would imagine. As an example in the upcoming BenQ review it has a much higher contrast ratio than the Panasonic yet the Panasonic specs claim a ratio 1000 times greater. Some of th... Richard • May 27, 2:29pm Original Overscan Via HDMI, 720p, 1080i, and 1080p all chopped off a few pixels on the right side. This also revealed two interesting observations; 1) the unit does not accept 480p digital video, and 2) it remembers vertical and horizontal centering positions by scan rate. Via component analog video, 720p and 1080i had the same result with only a one pixel loss on the left side for 720p. 480p over scan varied from 4-6%. While this never came up in my system, the lack of support for 480p via HDMI was a surprise. That could be a problem for some users who have their satellite or cable set top box set to output SD content at 480P so they have full access to formatting features of the display and appears to be the only possible concern one could have over this. Edited Overscan Via HDMI, 720p, 1080i, and 1080p all chopped off a few pixels o... SodaPop • Jun 1, 4:05am "For this projector there is practically no fill factor. There is little to be seen between the pixels even when you are within a foot of screen. With LCD you are focusing on the panels and they have enough depth that when you are setting focus there are three steps that appear to be in focus." The fill factor is very close to 100% and thus perfection. Use the focus pattern to easily adjust for perfect focus. For 1920 progressive sources the projector does no pixel processing. All the pixels are displayed as received. This projector is extremely clear. I have an April build. The best screen for most installations today is the 2.8 gain Da-Lite High Power. Everyone loves its brightness and clarity with NO side effects. It mates especially good with this Panasonic. The image is BRIGHT! (Set the zoom to about 1/4 from minimum and place the projector just over your head at the center of the screen coordinates). Smok'in on my 119" Hi-Power! It... Richard • Jun 1, 8:51am The best screen for most installations today is the 2.8 gain Da-Lite High Power. Widescreen Review, Number 4, Issue 119, April 2007 Joe Kane... jhecondevsys • Jun 1, 11:36am Where does one go for a realistic look at a front projector? I tried at BestBuy but it was washed out...looked terrible...... Richard • Jun 1, 12:54pm That can be a very tough nut to crack. I have provided demos here at the home for clients and some of our old clients will provide a demo if requested. Unfortunately it is rare to see one or more in a retail environment setup well. I think this is one of those areas where you have to take faith in the fact that most videophiles are into projection and for very good reason; they get far more imaging aspects correct over other display types. That said, to get the full benefits you need to work with a pro. www.isfforum.com... jhecondevsys • Jun 1, 3:31pm
Thank you. Would you please be so kind as to compare (positives and negatives) a front projector/superior screen in a dark room with similar sized (60"+) panasonic plasma? Thank you.... More from Richard Fisher
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