Optoma HD91 LED Home Theater Projector – Performance 2 Posted on June 11, 2014 By Art Feierman 1. Optoma HD91 Home Theater Projector Review - Optoma HD91 Projector Overview - Optoma HD91 Highlights2. Optoma HD91 Projector – Special Features 1 - LED Light Engine - The Lens - Pure Engine - Pure Motion/CFI3. Optoma HD91 Projector – Special Features 2 - Pure Color - UltraDetail - Dynamic Black Performance - Light Source Dimming4. Optoma HD91 Projector – Special Features 3 - 3D, 3D Glasses - 2D-3D5. Optoma HD91 Projector – Hardware Tour 1 - Optoma HD91 Hardware Tour - Optoma HD91 Input Panel - Power and Source Controls6. Optoma HD91 Projector – Hardware Tour 2 - Optoma HD91 Remote Control - HD91 Menus - HD91 Lens Throw - Closest and Furthest Placement - HD91 Lens Shift7. Optoma HD91 Projector Review – Picture Quality 1 - Out of the Box Picture Quality - Optoma HD91 Skin Tones8. Optoma HD91 Projector Review – Picture Quality 2 - HD91 Black Level Performance - HD91 Dark Shadow Detail9. Optoma HD91 Projector Review – Picture Quality 3 - HD91 Sports and HDTV Viewing - 3D Picture - HD91 Overall Picture Quality10. Optoma HD91 LED Home Theater Projector – Performance - HD91 Brightness in Different Modes - HD91 - Post Calibration - Zoom Lens Effect on Brightness - "Eco Mode" - Pre Calibration Color Balance11. Optoma HD91 LED Home Theater Projector – Performance 2 - Post Calibration Color Temperature - HD91 Sharpness - Image Noise - Audible noise12. Optoma HD91 Projector Review – Warranty - HD91 Warranty - Support Program - Express Service13. Optoma HD91 Home Theater Projector Review Summary - HD91 Brightness revisited... - A Dedicated Home Theater Projector - Optoma HD91 Projector - The Bottom Line14. Optoma HD91 Specifications OPTOMA HD91 PROJECTOR – PERFORMANCE PAGE 2: Post Calibration Color Temperature, Sharpness, Image Noise, Audible Noise Post Calibration Color Temperature Post Calibration Color Temp – Cinema IRE Color Temp (K) 100 6071 90 6490 80 6539 70 6589 60 6567 50 6622 40 6627 30 6547 20 6495 The color temperature band is pretty consistent, not exceptional from 20 IRE to 90, but moving up to full white the color shifts 500K temp to the red side of things. Mike wasn’t able to come up a way to bring the very brightest area back up. Numbers are nice, but ultimately it’w what you see on the screen. Since the amount of red in skin tones is never going to be near maximum brightness, after this calibration the red is no longer as obvious in skin tones. HD91 Sharpness Most impressive. While these last couple three years most 3LCD and LCoS 3 chip designs in the HD91’s price range address the inherent minor mis-convergence of their 3 “chip” configurations, with digital alignment solutions, it’s not just as good as starting without any mis-convergence. Overall the HD91 produces a very sharp image. It does a very nice job edge to edge with very little softness even in the corners. Take a look at our two pair of images above. In addition to the native sharpness, the Ultra Detail was turned on. To the On setting, not the over the top HD+ setting. Following the closeup of the HD91 on spiderman’s wrist gadget is the same basic image from the BenQ W7500 (another DLP), the JVC RS4910, which is a $5000 3 chip LCoS projector, and finally an Epson Pro Cinema 4030, the model below their UB series (we didn’t shoot this image with the 6030UB). And for fun, the last one is the $27,000 true 4K Sony VW1000ES (a 3 chip LCoS) (look at all the texture). The magnifications vary slightly as do the frames and the brightness. Have fun comparing. Image NoiseNo obvious problems with image noise. Although a DLP projector, it doesn’t seem to have as much background noise as most other DLP’s, which I find noisier than the other technologies. Most of the “noise” it seems, comes from the the various dynamic controls especially if you push them hard. The HD+ (highest) setting of Ultra Detail really brings out the noise, makes close up faces look hard. All considered no issues at all with noise. If you encounter noise around the edges, the HD91, I like that it offers edge masking rather than Overscan (which doesn’t maintain 1:1 pixel mapping. Audible noiseThe HD91 is one quiet projector. The spec sheet says 23 db. Remember that the HD91 doesn’t really have an “eco” mode. It is anywhere from much quieter to the Epsons and should also be noticeably quieter than the JVCs and Sony’s out there, but not as much. Bottom line – few projectors will be quieter. No problem. 1. Optoma HD91 Home Theater Projector Review - Optoma HD91 Projector Overview - Optoma HD91 Highlights2. Optoma HD91 Projector – Special Features 1 - LED Light Engine - The Lens - Pure Engine - Pure Motion/CFI3. Optoma HD91 Projector – Special Features 2 - Pure Color - UltraDetail - Dynamic Black Performance - Light Source Dimming4. Optoma HD91 Projector – Special Features 3 - 3D, 3D Glasses - 2D-3D5. Optoma HD91 Projector – Hardware Tour 1 - Optoma HD91 Hardware Tour - Optoma HD91 Input Panel - Power and Source Controls6. Optoma HD91 Projector – Hardware Tour 2 - Optoma HD91 Remote Control - HD91 Menus - HD91 Lens Throw - Closest and Furthest Placement - HD91 Lens Shift7. Optoma HD91 Projector Review – Picture Quality 1 - Out of the Box Picture Quality - Optoma HD91 Skin Tones8. Optoma HD91 Projector Review – Picture Quality 2 - HD91 Black Level Performance - HD91 Dark Shadow Detail9. Optoma HD91 Projector Review – Picture Quality 3 - HD91 Sports and HDTV Viewing - 3D Picture - HD91 Overall Picture Quality10. Optoma HD91 LED Home Theater Projector – Performance - HD91 Brightness in Different Modes - HD91 - Post Calibration - Zoom Lens Effect on Brightness - "Eco Mode" - Pre Calibration Color Balance11. Optoma HD91 LED Home Theater Projector – Performance 2 - Post Calibration Color Temperature - HD91 Sharpness - Image Noise - Audible noise12. Optoma HD91 Projector Review – Warranty - HD91 Warranty - Support Program - Express Service13. Optoma HD91 Home Theater Projector Review Summary - HD91 Brightness revisited... - A Dedicated Home Theater Projector - Optoma HD91 Projector - The Bottom Line14. Optoma HD91 Specifications Optoma HD91 LED Home Theater Projector – Performance Optoma HD91 Projector Review – Warranty