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Found 6 results

  1. Hola a todos Me pille con éste youtube chileno que habla de teles, led, oled, 4k y otras yerbas. Son interesantes sus comentarios. Alguien lo ubica??? Saludos dominicales
  2. Tal como lo menciono @Mocho en otro hilo existe un proyector 4k a un valor de U$ 2.00.000, lo que lo hace "accesible" comparado con otros modelos que no bajan de los U$ 10.00.000. Como me interesan los proyectores busque más info, y descubrí que no es solo uno, son dos modelos recién lanzados por la prestigiosa marca Optoma NEW PRODUCT ANNOUNCEMENTS Optoma UHD60 and UHD65 Evan Powell, June 5, 2017 ProjectorCentral.com Optoma stuns the projector world today with its release of the Optoma UHD60, a projector featuring TI's new 4K DLP chip, priced at $1,999. Also released today is a higher performance variation of the same model called the Optoma UHD65, priced at $2,499. These are the first 4K projectors to come to market anywhere near this price level. Differences between the Optoma UHD60 and UHD65 UHD60 UHD65 ______ ______ ANSI Lumens 3000 2200 Contrast 1,000,000:1 1,200,000:1 Frame Interpolation No Yes Color Wheel RGBCY RGBRGB Case Color White Black ___ ___ Retailers and Pro Resellers B&H Photo Beach Camera ProjectorPeople Amazon Best Buy ProjectorPeople Visual Apex Full Compass Price $1,999 $2,499 Optoma UHD65 w/ Black Casework (the UHD60 is white) Preliminary Notes -- Our Assessment So Far We have had a pre-production test sample of the Optoma UHD65 since last Wednesday -- not enough time to complete a full review. And we'd rather save the full review for a production unit anyway. However, we've spent a lot of time with the UHD65 in the last few days, so here is our take on it so far. Some of the key video processing components were set to OFF when the UHD65 came out of the box. So the picture was improved considerably with some calibration work, especially after experimenting with some of the unique controls such as PureContrast and PureColor which operate independently of and in addition to the conventional picture controls. Once we were able to get the UHD65 dialed in, it was capable of producing a beautiful, razor sharp 4K picture that is quite remarkable for its price of $2,499. The Big 4K Question The Optoma UHD65 uses the new 4K DLP chip which puts 3840x2160 discrete pixels on the screen. However the chip itself has 2716x1528 micro-mirrors and pixel-shifting technology is used to achieve the result on screen. The HUGE question is whether this method of achieving a 4K picture can match the image detail of fully native 4K chips. To answer this, we set up our UHD65 side by side with the Sony VPL-VW365ES, a native 4K projector that retails for $9,999. Now of course such a test is hugely problematic from the outset -- there is no way to isolate the imaging precision of the chips themselves from other factors such as the optical precision of the lenses, very subtle chip misalignment in the 3-chip engine, ANSI contrast variances not related to the chips themselves but other factors in light engine design, or other video processing features that would affect perceived image acuity. What we can do is set them side by side and note the differences in picture characteristics without making too many initial assumptions about what is causing them. With those caveats in mind, we fired up our trusty OPPO UDP-203 4K Blu-ray playerand the Scarlett Johannson movie LUCY in 4K UltraHD, and we were able to see side by side how these two projectors interpret the same 4K source. Initially the VW365ES appeared to have a subtle advantage in image sharpness. However, the UHD65 has a factory default on its Sharpness control of 8 on a scale of 1 to 15. Once that slider is moved to 11, the resolution of extreme detail such as hair and subtle skin textures appeared identical on both projectors. A subsequent evaluation of Sharpness test patterns revealed no objectionable artifacts related to the boost in sharpness processing. Based on our first independent look at a native 4K projector against a single chip 4K DLP projector, there is no question that the 4K DLP chip is capable of producing a 4K video image that is the visual equivalent in image detail of a native 4K chipset. Whether it can produce a visually equivalent image with complex stationary 4K graphics is a separate question that we have not had time to look at, and that test would be more stringent. The Optoma UHD65's top lid opens for access to manual zoom slider and lens shift control This is not to say that the UHD65 and the VW365ES are equivalent projectors -- not at all. Image resolution is only one factor in overall image quality. The VW365ES is brighter, has higher ANSI contrast, better image depth and uniformity, and a variety of other features. It produces the higher quality picture overall, but it should for 4x the price. The remarkable aspect of the story is that the Optoma UHD65 produces an impressive 4K picture and stands its ground remarkably well against the Sony VW365ES for $2,499. After comparing the UHD65's image sharpness to the Sony VW365ES, we then set it up against the Epson Home Cinema 5040UB. The 5040UB uses a similar pixel shift technology to enhance the image resolution of its native 1080p 3LCD chips. Though the 5040UB produces a picture that is much higher in apparent resolution than a standard 1080p projector, the UHD65 clearly exceeds the sharpness and 4K image detail of the 5040UB when they are placed side by side with a 4K source signal. There should be no surprise here since the 4K DLP chip has double the number of mirrors on the device that the 3LCD chips have. Moreover, the pixel shifting on the 3LCD 1080p devices result in partial overlay of one pixel upon another, whereas the shift technology on the DLP chip, though it overlays, is able to define a second discrete pixel. Now ... TWO important qualifiers. First, the image detail advantage of the UHD65 over the 5040UB exists ONLY with a native 4K UHD source. Once you switch to a standard 1080p input, these two projectors look identical in image sharpness. And this is no surprise. The UHD65 is able to display image detail that exists in a 4K signal that the 5040UB cannot, but it cannot create 4K detail that is not there. So with 1080p signals both projectors are upscaling 1920x1080 information and practically speaking they end up with the same results (detail wise). Second, once again we must qualify the observation--we are comparing image sharpness and detail resolution only, not all components of image quality. And in point of fact, the 5040UB has similar advantages to the VW65ES--it is brighter than the UHD65, it has higher ANSI contrast, better image three-dimensionality and uniformity. So we would not say one is "better" than the other. They each have competitive advantages over the other, and it depends on what is most important to you. If you want incrementally higher contrast, the 5040UB will give you that. If you want maximum image detail from your 4K UltraHD Blu-rays, the Optoma UHD65 is the clear choice. Frame Interpolation -- Do you need it? A key difference between the two projectors released today is that the UHD65 has Optoma's PureMotion processing, commonly known as frame interpolation, while the UHD60 does not. This is designed to smooth rapid motion, reduce motion artifacts, and reduce or eliminate the highly annoying judder commonly seen most frequently in camera panning sequences. Does it work, and do you need it? We tested the UHD65's PureMotion processing with 1080p/24, 1080p/60, and 2160p/24 inputs. Frankly, this feature is outstanding, perhaps the most impressive frame interpolation processing we've seen yet. In most FI systems we see a trade-off between motion smoothing and judder reduction on the one hand, and the appearance of the digital video effect on the other. The trick in most FI implementations is to choose the Low setting in order to reduce some of the motion artifacts without having the processing be so aggressive as to create the hyper-real "soap opera" look. The UHD65 gives you three option on PureMotion -- 1, 2, and 3, with three being the most aggressive. The fascinating thing about the UHD65 is that even the lowest setting is extremely robust, virtually eliminating judder while introducing either no digital video effect at all, or in some cases just a very slight hint of it that most people would not notice or object to. To the contrary, with 1080p sources the effect tends to impart a slight sharpening to the picture that most viewers would consider beneficial. Furthermore, in addition to the digital video effect most people don't want, most FI systems tend to introduce other undesirable motion artifacts in certain situations. On the UHD65, when studying clips in which those artifacts should show up, they don't. This PureMotion processing is remarkably clean. Oddly enough, the lowest setting, PureMotion 1, is so potent in eliminating motion artifacts and judder that there is little left for the more aggressive settings, 2 and 3, to do. When switching to 2 or 3, one does not see much additional improvement in smoothness on the one hand, or strangely, not much additional hint of soap opera effect on the other. The bottom line is that the PureMotion frame interpolation system on the UHD65 performs surprisingly well. In our view the extra $500 you pay for the UHD65 is worth it just for the PureMotion processing alone. We would consider the richer color from the RGBRGB color wheel and the (possibly) incrementally higher contrast of the UHD65 over the UHD60 additional bonuses. Performance These are preliminary readings based on our pre-production test sample. They will be updated once we have the chance to review a production model. Brightness. The UHD65 is rated at 2200 ANSI lumens. We measured the maximum output of our test sample at 2024 lumens in Bright mode, which is a decidedly green-pushed color mode, not ideal for optimum video display. Nevertheless, all of the better calibrated modes for video and game display are of ample brightness for home theater: Optoma UHD65 ANSI Lumens MODE Bright ECO Cinema 1279 885 HDR 1156 800 Vivid 1402 965 Game 1334 920 Reference 896 616 Bright 2024 1400 Eco mode. Eco mode reduces brightest by 31% from Bright mode and extends anticipated lamp life from 4000 to 10,000 hours. Zoom lens effect. The projector is at its brightest when the 1.6x zoom lens is set to its widest angle position (largest image for any given throw distance). When set to its longest throw telephoto position, lumen output is curtailed by 28%. This is in line with expectations for most 1.6x zoom lenses. Brightness uniformity. Depending on the zoom lens position uniformity averages around 70% with the brightest portion of the image in the center to lower center of the screen. While 70% uniformity is lower than ideal, in our experience it is typical of most popular lower priced DLP home theater projectors. On a 100 IRE white pattern the image fades somewhat on the left and right edges. With active video on the screen the edge fading will not be noticed by the viewer since the video breaks up the image and the eye is focused on the action in the middle 80% of the screen anyway. But it is visible on a solid color image such as a test pattern. Fan noise. Fan noise is low in volume and moderate in pitch. Overall it is unobtrusive. It is quieter than most low priced home theater projectors, but not as stone quiet as the very best in this regard. We suspect very few users will have any problem with it. Input lag. The input lag measured 82 ms with PureMotion (frame interpolation) set to OFF, and 154 ms with Pure Motion ON. Rainbow artifacts. Since this is a single-chip DLP light engine, rainbow artifacts will occur on occasion. In our many hours of viewing so far, they are few and far between, causing no distractions of consequence. On-board Audio. Most advanced home theater projectors do not have speakers on-board because manufacturers assume you will have independent surround sound. The UHD65 does have audio on board, and it is surprisingly good for what it is. It is not as tinny and thin as the vast majority of projector speakers are. It obviously does not have the bass depth or power of a good sound system, but it is clear, clean, and distortion free all the way up to its maximum of 10. It is not overly loud, but it will give you very decent sound track reproduction if you happened to need it. 3D. There is no 3D capability on these models. Set Up / Installation Throw range.According to our measurements on the test sample, the UHD65 has a 1.56x zoom lens with a throw ratio of 1.42 - 2.22, which will let you hit a 120" diagonal 16:9 screen from a distance of about 12.3 to 19.2 feet. Lens Shift and Vertical Offset. This projector has a limited vertical lens shift range, equal to about 18% of the picture height, and no horizontal lens shift. In addition, there is a built-in vertical offset, or fixed projection angle. With the lens shift at its lowest setting the entire image is above the centerline of the lens, and the centerline intersects the bottom edge of the image. From this position, using the manual lens shift, the bottom edge of a 120" diagonal image can be raised a maximum of 10.75 inches. Conversely if you ceiling mount the projector you can lower the top edge of a 120" image up to 10.75 inches below the centerline of the lens. There is no keystone adjustment on this projector. So you may not tilt the projector to hit a screen, planning to square it up with keystone. With the built-in vertical offset, no significant vertical lens shift range and no keystone, mounting the projector on a rear shelf or rack behind the seats will in most cases be impossible to manage. In theory you could place it on a coffee table or low table between the seats, but given its minimum throw distance, this may mean you are sitting farther back from the picture than many home theater fans would prefer. So the bottom line is that most users of this projector will want to ceiling mount it above and behind the seating area. As always, do some planning and get your throw distance and offset geometry squared away before hanging the screen and drilling holes for the ceiling mount. Conclusion Our initial experience with the Optoma UHD65 pre-production sample is quite satisfying. It required professional calibration to get the best performance from it, but once that is done the extreme image detail and overall picture quality with 4K source material is outstanding for the money. It has ample brightness for dark room home theater use. It shows very good but not leading edge contrast and black levels, but certainly the contrast and black levels are sufficient to produce a balanced and thoroughly engaging video image. The frame interpolation system is simply outstanding, and with PureMotion 1 active it delivers an amazingly smooth, stable picture that is virtually free of annoying side effects. In our view the PureMotion processing is a substantial advantage of the UHD65 over the UHD60, and easily worth the extra money. We look forward to seeing a final production unit, and we will write a formal review once we've had time to put it through its paces. But from what we've seen so far it looks like the Optoma UHD65 is going to rock the projector world with its price/performance proposition. There is simply no such thing as a high precision projector with an extreme detail 4K video image anywhere near its price. If you want to see ALL of the detail in your 4K UHD Blu-rays or other 4K sources on a very large home theater screen, the Optoma UHD65 is an exciting new way to do it without breaking the bank.
  3. Ice Age Collision Course Bluray 4K UHD Usado, como nuevo Envio gratis por Chileexpress Precio: 18,900-
  4. Hola a todos. Les vengo a dejar un dato de este aparatito que compré hace unos meses. Es un splitter HDMI (version 2.0b, que es la que soporte HDR) que tiene como objetivo sacar la señal de audio de una señal de video 4K con HDR y que soporte también HDCP 2.2. Básicamente, soporta todos los estándares de ahora, exceptuando el HDMI 2.1 que es el de 48GBps que se usará para 5K, 8K, 10K, y así. Utilidad que le doy en este minuto y por qué tuve que buscar algo así? Bueno, mi receiver de audio Yamaha tiene ya sus años y solo venía con la opción de 4K passthrough, pero con una versión antigua de HDCP y HDMI, por lo que no puede pasar ningún standard HDR que exista ahora. Solo puede pasar 4K que no tenga esa característica, por lo que comprenderán, me desesperé un poco al darme cuenta de esto al momento de probar las primeras películas en 4K en un Oled LG. Acababa de comprar la TV y por supuesto no iba a comprar un receiver nuevo solo por esta razón, así que busque una solución dentro que fuese monetariamente posible y supliera con lo que necesitaba de momento. Hasta ahora, el aparato ha funcionado casi perfecto. Hay veces que creo no funciona del todo bien y no envía señal a la TV, pero estoy empezando a sospechar de que pueden ser los cables que compré y que son de mala calidad. Creo que pediré unos por amazon y ver que tal. Todo se arregla al prender y apagar el splitter (enchufar y desenchufar de la corriente). Lo demás, flawless. Lo uso con un Nvidia Shield TV, viendo pelis con Plex o lo que sea en 4K. El audio sale en el formato correcto, sin problemas. Antes tenía conectado el Shield directo a la TV y salia por optica. Por alguna razon, la TV nunca pudo sincronizar bien el audio y siempre tenía un pequeño desfase. Esto me mataba y me ponía de mal genio cada vez que veía algo en la TV. Nunca logré arreglarlo, incluso usando la opción de delay de la TV y del Shield que también tiene. Haste del receiver!... y nada, nunca puede. Lo que me llevó a pensar que es algo de la TV. Tengo la impresión de que la TV demora ciertas milésimas de segundo en descodificar el audio para que que pase de, por ejemplo, Dolby True HD a Dolby Digital o de DTS-MASTER HD a DTS, ya que tienen distinto bandwidth y que es necesario para que pase por señal optica. Pero estás milésimas de segundo no siempre eran idénticas y por eso nunca logré hacer sincro. Bueno, no los aburro más y les dejo el link del splitter: ViewHD UHD 18G HDMI Audio Extractor/Splitter Support HDMI v2.0 | HDCP v2.2 | 4K@60Hz | HDR | ARC | 3.5MM Analog Audio Output | Toslink Optical Audio Output | HDMI Audio Output | Model: VHD-UHAE2 http://a.co/d/88bVaUe
  5. Estimados: Quería contarles mi experiencia con un HTPC que me acabo de armar para ver películas en 4K@60Hz, donde aún estoy luchando por configurar todo ya que es un tema muy verde aún. Para empezar, elegí la sexta generación de Intel (Skylake) debido a que trae soporte para 4K y con un procesador y placa baratos es suficiente. La piezas que usé para armar el HTPC fueron las siguientes todas estas se pueden adquirir en Chile en diferentes tiendas, pero es stock va cambiando muy rápido, por eso no pongo links directos, pero recomiendo que usan la página www.solotodo.com para cotizar los precios más baratos): Lo primero: Televisor 4K LG UF4900 49" Procesador: Intel Pentium G4400 (con IGP capaz de reproducir 4K@24Hz) Placa Madre: MSI H110 PRO-VH Video: PowerColor Radeon RX460 (HDMI 2.0 y DisplayPort 1.4 para 4K@60Hz) Memoria: 8GB Kingston HyperX PC2133 Disco Duro: SSD Crucial 128GB (Tengo un NAS de 3TB para las películas) Fuente: Spektar 650W (con conectores para tarjeta de gama alta) Gabinete: Coolmaster mATX (no he encontrado ganinetes para HTPC decentes). Otros: Cable HDMI 2.0 o cable HDMI que diga en el cable "High Speed". Si poseen un TV/Monitor con DisplayPort, cable display port 1.2 o superior. Armado: Primero armé todo el PC sin la VGA debido a que el embarque en TTChile se trasó un poco, por lo que me sirvió para probar si el procesador con su Intel HD Graphics 510 era capaz de mover 4K a 24Hz (la placa tiene HDMI 1.4). Configuración: Bueno, después de instalar Windows 10 y los drivers necesarios, probé varias películas 4K descargadas, como Deadpool, Mad Max, Life of Pi, San Andreas, X-Men. Estas películas poseen pesos muy distintos, y por lo tanto, deben haber sido encodeadas con diferentes técnicas. Me voy a detener un poco en el H265, que es nuevo formato de codificación y decodificación de video. Este nuevo códec permite reducir el peso de las películas a 50% más que H264, lo que es de mucha ayuda al descargar y almacenar, debido a la reducción de peso, pero no al decodificar, ya que al estar mucho más comprimda, el PC necesita mucha más fuerza para descomprimir el archivo, por lo que las piezas de generaciones anteriores van a sudar para decodificar estos archivos (hagan la prueba con un 1080p en H265). Lamentablemente, al estar muy verde el tema 4K, al parecer los encodeos son muy distintos, ya que hay películas de 25Gb como otras de 3GB, donde la calidad es similar. Al probar estas películas con los distintos reproductores clásicos (VLC, MPC, Windows Media Player y otro nuevo que trae Windows 10) los resultados fueron dispares, y algunos de plano no reproducian el archivo, otros lo repoducían mal (cortes de video y audio), otros solo imagen sin audio, y otros perfecto, pero todo dependía de la película. En general las películas con másc ompresión eran las más difíciles de reproducir. En el apartado de YouTube en 4K, no usen Google Chrome, ya que su optimización es horrible. Dejo el link de unas pruebas de 4K entre Chrome y Edge (el nuevo explorer de W10), y las diferencias en el uso de CPU son gigantes. Google Chrome ocupa más del 80% de recursos, generando cortes en video y audio. http://winphonemetro.com/2016/08/google-chrome-vs-edge-anniversary-update-rendimiento-reproduccion-video VGA: Elegí esta VGA (RX460), por ser una tarjeta barata, pero con prestaciones de gama alta (como toda la línea nueva de VGAs de Nvidia y AMD), que integran HDMI 2.0 y DiplayPort 1.2 o superior, necesario para 4K@60Hz. Esta tarjeta en Chile en este momento tiene un costo de 103.000 cash en TTChile, lo más barato con esas prestaciones. Al instalarla y conectarle el cable HDMI highspeed, logré una resolución full de 4096x2160 a 60Hz. Si embargo aún estoy viendo el tema de optimización (me llegó ayer solamente). Lo otro bueno es que la tarjeta aguanta HDR a 10bit (que resalta aún más los colores), lamentablemente mi televisor no lo soporta (no sabía de eso al comprarlo, my mistake) Audio: Ahora el problema que estoy teniendo es el audio, ya que el computador, por alguna razón, solo me está tirando audio en 2.0 al televisor (que a su vez está conectado a un receiver via óptico). He visto algunos foros y al parecer hay que conectar el HDMI a la entrada ARC (http://www.xatakahome.com/televisores/hdmi-arc-que-tipo-de-conexion-es-esta) y configurarlo para que haga passthrough del 5.1 y de ahí por SPIDF al receiver (mi receiver no es HDMI 2.0, por lo que no puedo conectar el HDMI al receiver primero) Conclusión: El 4K está aún en pañales. Para poder armar este HTPC investigué mucho tiempo en internet, pero el tema está muy verde aún y es difícil encontrar gente que haya hecho lo mismo y soluciones a los problemas que se van presentando. Sin embargo, puedo decir que vale totalmente la pena si eres un cinéfilo, ya que la calidad de imagen es absolutamente superior y volver a ver pelúculas en resoluciones menores es por decirlo menos, triste. Iré actualizando este post con cosas nuevas a medida que vaya solucionando problemas o encontrando cosas nuevas. Si tienen consultas, comentarios o aportes no duden en postearlas para tratar de resolver las dudas para todos lo que quieran probar esta nueva tecnología. Saludos
  6. Dn_pio

    Drone...

    De gustarme mucho la fotografía, por fin conseguir un equipo muy bueno, complementar con otros tipos de cámaras (gopro por ejemplo), caer en el vicio del Hifi, los TPA y ahora caer nuevamente, pero en esta locura tecnológica que son los Drone... alguien más ha caído en la tentación de estos bichos voladores?