Optoma HD23 Projector – Performance Posted on July 16, 2013 By Art Feierman 1. Optoma HD23 Home Theater Projector Review - Optoma HD23 Projector Highlights - Optoma HD23 Projector Overview2. Optoma HD23 Special Features - HD23 Superwide - HD23 Lamp Life - 1.2:1 Zoom Lens - HD23 ImageAI3. Optoma HD23 Projector – Physical Tour - Optoma HD23 Projector - Appearance - HD23 Control Panel - HD23 Projector - Input/Output4. Optoma HD23 Projector – Physical Tour 2 - HD23 Menus - Optoma HD23 Remote Control - Optoma HD23 Lens Throw - Lens Shift - Anamorphic Lens - Wide Screen5. Optoma HD23 Projector – Image Quality - Optoma HD23 Out of the Box Picture Quality - Optoma HD23 Projector - Flesh Tones6. Optoma HD23 Projector – Image Quality 2 - Optoma HD23 Black Levels & Shadow Detail - Black Levels Comparison - Shadow Detail Performance - Shadow Detail Comparison - Black Level and Shadow Detail Performance: HD23 Projector - Bottom Line7. Optoma HD23 Projector – Image Quality 3 - Optoma HD23 - Overall Color & Picture Quality8. Optoma HD23 Projector – Image Quality 4 - Optoma HD23 Projector: HDTV and Sports Viewing - Optoma HD23 Projector: Bottom Line on HDTV Sports9. Optoma HD23 Projector – Performance - Optoma HD23 Brightness - Post Calibration: User "best" mode = 713 lumens - Effect of zoom on lumen output (Bright mode)10. Optoma HD23 Projector – Performance 2 - Comparing Image Modes11. Optoma HD23 Projector – Performance 3 - Optoma HD23 Sharpness - Sharpness Comparison Images - Optoma HD23: Bottom Line Sharpness12. Optoma HD23 Projector – Performance 4 - Light Leakage - Image Noise - Audible Noise13. Optoma HD23 Projector Calibration and Settings - Optoma HD23 Color Temperature - Optoma HD23 Basic Settings14. Optoma HD23 Projector Calibration and Settings 2 - Optoma HD23 Post Calibration Grayscale: User Mode - HD23 RGB Settings15. Optoma HD23 – Projector Screens - Optoma HD23 Projector Screen Recommendations16. Optoma HD23 Projector – Warranty - Optoma HD23 Projector - Warranty17. Optoma HD23 – Review Summary - Optoma HD23 Projector - The Bottom Line - The Very Bottom Line on the HD23 projector - Optoma HD23 Projector: Pros and Cons - Optoma HD23 Projector: Pros - Optoma HD23 Projector: Cons18. Optoma HD23 – Full Specifications In this section, we consider the brightness (including full measurements), sharpness, and other issues including image, light leakage, and audible noise of Optoma’s HD23 home projector. Optoma HD23 Brightness Lumen Output and Color Temp at 100 IRE (mid zoom) Cinema 1081 lumens @ 7773 Bright C1045 @ 9291, 1176 @ 7892 on Warm color temp, 1319 @7983 with Brightness on default of 50 Photo 1045 @ 9045 Reference 736 @ 8578 User 736 @ 8578 The HD23 is a brighter than average home projector, although not by much. That’s despite the published spec of 2500 lumens. If you like to judge a projector based on how well the product meets the manufacturer’s claims for brightness, then we have here an Optoma that doesn’t come close. But what matters is the projector’s actual abilities. I’ll try to forget that this projector comes up shorter, compared to claims, than any other low cost projector, (even the Optoma HD33 we reviewed earlier this year) which was also well below claim. Setting that aside, what we have here is a reasonably bright projector. We are using Cinema as our “brightest” mode, and interestingly, after Mike tweaks (quick-cal) the settings for a better picture, Cinema mode gets brighter, not dimmer (dimmer is typical)! Those numbers above, lumens and color temperatures, are all “right out of the box”, without any adjustments to settings like contrast or brightness, which can affect overall brightness. Now don’t let this freak you out. As I just said, our “Brightest” mode turns out to be Cinema! Our best mode is based on the default User, and is dramatically less bright than Cinema, but still a good deal brighter than average. (On most projectors modes with names like Cinema or Theater tend to be the “best” mode, or at least one of the better lower brightness modes.) Color Temp over IRE Range (Cinema mode) 30 IRE 7991K 50 IRE 7991K 80 IRE 7840K 100 IRE 7773K Here’s what Cinema mode looked like as far as color temperature across the brightness spectrum. or some reason, Mike didn’t give me the equivalent IRE measurements for User mode, but that’s OK, afterall, a little further down, you’ll have our post calibration numbers, and of course we tell you how to set the HD23 projector to achieve those. Back to the default Cinema mode. It’s definitely on the cool side, but not terribly so. And, per Mike, an easy calibration to improve. Mike noted this: No QuickCal of Bright mode was necessary, because the calibrated (Cinema) mode was higher than the Bright mode with default color temp and the calibrated Cinema mode was only 59 lumens less than Bright mode on Warm color temp. Considering our calibrated User mode looks a lot better than Bright mode, no one will care about 59 lumens (give or take). So, what are the final brightness numbers? Post Calibration: User "best" mode = 713 lumensPost Calibration: Cinema “brightest” mode = 1117 lumens As it turns out both Cinema, and the User mode calibrate very well, Mike immediately pointed out that skin tones look better in User mode. There is a Bright mode, but Cinema is virtually as bright and a better choice, so Mike chose Cinema as the best “brightest” mode. You’ll notice below, that the User mode has a tighter range of color temp across the brightness range from 20 to 100 IRE, which no doubt explains the better skin tones. Measurements for both modes post calibration found below. Lumen Output (Standard Lamp (eco), Bright mode): 832 It should be mentioned that Standard is Optoma’s low power lamp mode – many projectors call that eco-mode. Optoma calls their full lamp power Bright, so when the projector is at its brightest, it’s actually Bright (color mode) and Bright (lamp mode). That should confuse everyone, at least for a few seconds. That represents a drop of just over 20% of the HD23 projector’s brightness, . Expect that same amount of drop in any mode when switching from bright lamp to standard lamp. There is also an Image AI lamp setting. In this mode, Optoma lowers lamp brightness dynamically to reduce black levels (and the bright ones too), similar to a dynamic iris. Image AI’s action, as we have reported with some other previous Optoma projectors, is noticeable. It tends to snap on or off, a second or so after a major scene change in brightness. I’d recommend leaving ImageAI off. Why? I expect you’ll notice it’s snap dropping and brightening, to be more distracting than any benefit it offers in terms of blacks. Effect of zoom on lumen output (Bright mode) Effect of zoom on lumen output (Bright mode) Zoom out 1129 Mid-zoom 1045 Zoom in 940 No surprises above. With a 1.2:1 zoom we don’t a dramatic drop in brightness between wide and tele, and as you can see, the variation is only about 17%. On projectors with 2:1 type zooms, the drop can be as much as 40%. Of course, the trade-off is placement flexibility. 1. Optoma HD23 Home Theater Projector Review - Optoma HD23 Projector Highlights - Optoma HD23 Projector Overview2. Optoma HD23 Special Features - HD23 Superwide - HD23 Lamp Life - 1.2:1 Zoom Lens - HD23 ImageAI3. Optoma HD23 Projector – Physical Tour - Optoma HD23 Projector - Appearance - HD23 Control Panel - HD23 Projector - Input/Output4. Optoma HD23 Projector – Physical Tour 2 - HD23 Menus - Optoma HD23 Remote Control - Optoma HD23 Lens Throw - Lens Shift - Anamorphic Lens - Wide Screen5. Optoma HD23 Projector – Image Quality - Optoma HD23 Out of the Box Picture Quality - Optoma HD23 Projector - Flesh Tones6. Optoma HD23 Projector – Image Quality 2 - Optoma HD23 Black Levels & Shadow Detail - Black Levels Comparison - Shadow Detail Performance - Shadow Detail Comparison - Black Level and Shadow Detail Performance: HD23 Projector - Bottom Line7. Optoma HD23 Projector – Image Quality 3 - Optoma HD23 - Overall Color & Picture Quality8. Optoma HD23 Projector – Image Quality 4 - Optoma HD23 Projector: HDTV and Sports Viewing - Optoma HD23 Projector: Bottom Line on HDTV Sports9. Optoma HD23 Projector – Performance - Optoma HD23 Brightness - Post Calibration: User "best" mode = 713 lumens - Effect of zoom on lumen output (Bright mode)10. Optoma HD23 Projector – Performance 2 - Comparing Image Modes11. Optoma HD23 Projector – Performance 3 - Optoma HD23 Sharpness - Sharpness Comparison Images - Optoma HD23: Bottom Line Sharpness12. Optoma HD23 Projector – Performance 4 - Light Leakage - Image Noise - Audible Noise13. Optoma HD23 Projector Calibration and Settings - Optoma HD23 Color Temperature - Optoma HD23 Basic Settings14. Optoma HD23 Projector Calibration and Settings 2 - Optoma HD23 Post Calibration Grayscale: User Mode - HD23 RGB Settings15. Optoma HD23 – Projector Screens - Optoma HD23 Projector Screen Recommendations16. Optoma HD23 Projector – Warranty - Optoma HD23 Projector - Warranty17. Optoma HD23 – Review Summary - Optoma HD23 Projector - The Bottom Line - The Very Bottom Line on the HD23 projector - Optoma HD23 Projector: Pros and Cons - Optoma HD23 Projector: Pros - Optoma HD23 Projector: Cons18. Optoma HD23 – Full Specifications Optoma HD23 Projector – Image Quality 4 Optoma HD23 Projector – Performance 2