In this 4K HDR TV comparison, we look at the Samsung QN82Q6FN vs Sony XBR-75X900. Which would you choose?
AVS Forum member todd1010 is thinking about a larger 4K HDR TV for his media room because it won’t accommodate a projector. He’s considering the 82″ Samsung QN82Q6FN and 75″ Sony XBR-75X900F. Why the discrepancy in sizes? The 85″ X900F costs way more than the 82″ Q6FN; the 75″ X900F is more in line with the Samsung’s price. So, he started a thread to ask for opinions on which one he should get.
I studied the Rtings’ reviews of each model and came up with the following table summarizing the results and indicating which one has the advantage in each performance parameter. As you can see, the Sony gets much brighter, but its black level is twice as high as the Samsung’s. The Samsung uses edgelighting with quantum dots, while the Sony uses a FALD (full-array local-dimming) backlight without quantum dots. The use of quantum dots is probably why the Samsung has a larger color volume.
Regarding HDR, the Samsung supports HDR10, HDR10+, and HLG, while the Sony supports HDR10, HLG, and Dolby Vision. I decided to give the advantage to the Sony because Dolby Vision is much more widespread than HDR10+ at this point, though they both use dynamic metadata.
I generally much prefer FALD backlighting over edgelighting, which leads to the Sony. However, I also prefer lower black levels over higher peak brightness, which leads to the Samsung. Still, in this case, I’d pick the Sony, especially since edgelighting has more uniformity problems at larger screen sizes. (I don’t know what screen size Rtings reviewed, but I bet it was smaller than the 82-incher.) Plus, the Sony has a lower MSRP, even when compared with the Samsung’s promo price; the Sony has no promo price on its website. Yes, the Sony is 7″ smaller than the Samsung, which could be a deciding factor the other way.
Take a look at the table comparing the Samsung QN82Q6FN vs Sony XBR-75X900F. Which performance parameters are most important to you?
|Samsung QN82Q6FN||Sony XBR-75X900F||Advantage|
|Peak Brightness (HDR Mode)||524 nits||894 nits||75X900F|
|Black Level||0.08 nit||0.16 nit||82Q6FN|
|# Local-Dimming Zones||N/A||Unknown||75X900F|
|ABL Effect on Peak Brightness||Slight||Moderate||82Q6FN|
|HDR Formats Supported||HDR10, HDR10+, HLG||HDR10, HLG, DV||75X900F|
|Grayscale Calibration (avg dE)||0.19||0.13||75X900F|
|Color Calibration (avg dE)||1.42||1.33||75X900F|
|Color Volume (% normailized P3)||86.90%||78.80%||82Q6FN|
|Off-Axis Image Degradation||Pronounced||Pronounced||—|
|Input Lag (Game Mode)||~15 ms||~13-41 ms||82Q6FN|
|Promo Price at Writing||$3,799.99||$3,499.99||75X900F|
This set of comparison data is based on the results obtained by Rtings in its TV reviews. Rtings provides comprehensive measurements and evaluations, much more than I can summarize in a single table. Here is a brief explanation of how I derived the values in the table.
Peak Brightness: Rtings’ “HDR Real Scene Peak Brightness,” which uses a specially selected scene to measure peak brightness. Measuring peak brightness with a white window depends on the size of the window; using a real scene is more representative of watching real content. Higher is better.
Black Level: Calculated by dividing the HDR Real Scene Peak Brightness by the ANSI contrast ratio with local dimming on. Lower is better.
Uniformity: Rtings conducts several objective uniformity tests, including full-screen gray fields at 50% and 5% brightness as well as black. I take them all into account to come up with an overall judgement.
Backlight Type: FALD (full-array local-dimming), edgelit, emissive. Includes an indication if quantum dots (QDs) are used in the backlight, which generally increases peak brightness and color volume. Emissive is best, followed by FALD, then edgelit.
# Local-Dimming Zones: The number of local-dimming zones. Higher is better. In emissive displays, such as OLED, each pixel can be independently dimmed or brightened, so they have the highest number of dimming zones. Some manufacturers do not reveal the number of local-dimming zones.
Local-Dimming Artifacts: Local dimming can create artifacts such as haloing or loss of dark detail. I come up with a judgement based on Rtings’ comments on local dimming.
ABL Effect on Peak Brightness: ABL (Automatic Brightness Limiting) lowers the overall brightness as larger areas of high brightness are displayed. This is particularly problematic on OLED TVs. I come up with an overall judgement based on Rtings’ peak-brightness measurements at different window sizes.
HDR Formats Supported: HDR10, HDR10+, Dolby Vision (DV), HLG, Technicolor. The more HDR formats supported, the better.
Grayscale Calibration (avg dE): The average delta E error value for grayscale obtained after calibration. Lower is better. Values less than 3 are considered indistinguishable from perfect.
Color Calibration (avg dE): The average delta E value for colorimetry obtained after calibration. Lower is better. Values less than 3 are considered indistinguishable from perfect.
Color Volume (% normalized P3): The percentage of the DCI P3 color volume the TV can reproduce when adjusted for the TV’s maximum brightness. Higher is better.
Motion Performance: This is a huge performance category that encompasses several aspects, including frame interpolation, black-frame insertion, stutter, and judder. I come up with an overall judgement based on Rtings’ comments in its motion section.
Upscaling: Modern 4K/UHD TVs must upscale content at lower resolutions. I come up with an overall judgement based on Rtings’ comments on the TV’s upscaling performance with 480p, 720p, and 1080p content.
Off-Axis Image Degradation: As a viewer moves away from being centered on the screen, the color can appear to desaturate and shift, and the black level can appear to increase, leading to lower contrast. LCD TVs universally suffer from this effect, especially those that use VA (vertically aligned) panels, while OLED TVs generally do not, other than a slight color shift. I take Rtings’ off-axis results into account to come up with an overall judgement of color and black-level degradation.
Anti-Reflective Effectiveness: Most TVs have an anti-reflective coating on the screen that mitigates reflections of objects in the room, especially lights. I take Rtings’ comments about reflections into account to come up with an overall judgement.
Image-Retention Potential: Image retention is the temporary appearance of a static image that has been displayed for some time. Examples include a channel logo in the corner of the screen or a news ticker along the bottom. This is a real concern with OLED TVs but not LCD TVs. I come up with a judgment based on Rtings’ results.
Burn-In Potential: Burn in is the permanent appearance of a static image that has been displayed for a long time. This is a real concern with OLED TVs but not LCD TVs. I come up with a judgment based on Rtings’ results.
Input Lag (Game Mode): Input lag depends on resolution and frame rate. The number here is a rough indication of input-lag times measured by Rtings in the TV’s Game mode. Lower is better.
MSRP: Manufacturer’s Suggested Retail Price as indicated on the manufacturer’s website.
Promo Price at Writing: Many manufacturers offer a promotional price on their websites. This price may be available only for a limited time; the price listed here is accurate at the time of writing.