To perform these tests, we use a high-speed camera that shoots at 1000 frames per second. Analyzing the video frame-by-frame allows us to observe the exact time it takes to go from a zero-percent signal to a 100% white field.
The pattern generator is placed at the base of the monitor so our camera can capture the precise moment its front-panel LED lights up, indicating that a video signal is being received by the monitor. With this camera placement, we can easily see how long it takes to fully display a pattern after pressing the button on the generator’s remote. This testing methodology allows for accurate and repeatable results when comparing panels.
Here’s a shot of our test setup. Click on the photo to enlarge.
The brighter section of the camera’s screen is what actually appears in the video. You can see the lights of the pattern generator in the bottom of the viewfinder. We flash the pattern on and off five times and average the results.

The F8500 has a game mode that reduces processing to lower input lag. It does not affect the screen draw time, which is already lightning-fast. A plasma panel goes black between frames, rendering motion blur almost non-existent. Even though you’re limited to 60 Hz, that fact contributes to very smooth motion on-screen.
Here are the lag results:

Game mode certainly does improve our input lag measurement. But Samsung's F8500 is still well behind the performance of even a typical computer monitor. If you plan to hook up a gaming PC to a plasma panel, Pioneer's Kuro is a better choice. It’s too bad they’re not made any more! Console gaming shouldn't pose as much of an issue; you can only move and turn so fast with a joystick or directional pad.
One spec that may catch your attention is the F8500’s 96 Hz refresh rate. Unfortunately, the TV cannot accept a 96 Hz signal. For that, you’re still limited to 60 Hz over HDMI. The 96 Hz figure refers to the output rate, which is designed for the proper handling of 24p content, where each frame is repeated four times. If you turn on frame interpolation, you can enjoy smoother motion in games, though you might see the occasional tear.
- Samsung PN51F8500 51-Inch Plasma HDTV Review
- Packaging, Physical Layout and Accessories
- Setup And Calibration Of The Samsung PN51F8500
- Real-World Testing: Movies and 3D
- Real-World Testing: SmartHub
- Measurement And Calibration Methodology: How We Test
- Results: Brightness and Contrast
- Results: Grayscale Tracking and Gamma Response
- Results: Color Gamut and Performance
- Results: Viewing Angles and Uniformity
- Results: Pixel Response and Input Lag
- Video Processing and 3D Crosstalk
- Samsung PN51F8500: We Still Love Plasma

@n3cw4rr10r It's not overpriced at all, but rather an outstanding value (though not as good a value as the sorely-missed Panasonic P50ST60). The image quality is tremendously better than any 4K TV, even with perfect 4K source content, even if they sold the 4K TVs for $1500 or less. The difference in contrast(dynamic range) is the most important, and it is huge. Side-by-side with the plasma, no one would pick any 4K LCD.
I got a Panasonic VT60 at the beginning of the year, just as stock was running dry. I'm still amazed by the picture quality.
Actually OLED is arguably already there or getting there. Some people were able to pick up LG's 55" OLED TV for $2000 (not a typo) via in-store at Microcenter.
For a more universal price-point, it's newest revision is now going for $3500.
Most HDTV's have a "GAMING MODE" option which disables video processing inside the HDTV for a particular HDMI input such as your game console might use.
Having said that, burn-in issues have never been completely solved so I wouldn't game on a Plasma anyway (seems an important thing to mention doesn't it?).
It's a very important factor for plasma and OLED screens, particularly for anyone who wants to use them for gaming. Permanent burn-in is almost nonexistent with modern plasmas, but a bright spot from a network logo or HUD element that takes dozens of hours to clear up is a major deterrant to buying a plasma or OLED screen. And some plasmas handle this much, much better than others do.
I'm still on a 2005 Sony flat screen I got for $15 last year. I don't know how to express this properly, but it's one of those TVs with a... big back? It's not one of those thin TVs.
My only regret is being talked into paying $195 for an extended warranty at Circuit City which was never used...but this was still new tech back, then. My only complaint is that it sucks a lot of power and produces a lot of heat (short winters where I am)...hence the reason for only being used at night and for a limited duration in the bedroom anymore. I know the newer ones run cooler and are more efficient but I would never pay $1800+ for a 50"+ 1080p HDTV ever again unless it's OLED.
With that said, it's great to see sites like Tom's still taking the time to review plasmas!
It's got a nice, good quality image and it says it's assembled in Poland. To be quite honest I did find it provided the best bang for buck and since I wanted plasma anyway ( I think it's better than LCD for TVs ) I'm super happy.
Didn't even know LG made plasma TVs but I wouldn't be surprised if the actual screen is made by Panasonic or something.
Yes, I'd really like OLED but OLED would be great as a smaller PC monitor first and then for a large TV. For a TV I think plasma is fine but even though I got a good IPS LCD I'd just love an OLED 23-24 inch monitor.
It's got a nice, good quality image and it says it's assembled in Poland. To be quite honest I did find it provided the best bang for buck and since I wanted plasma anyway ( I think it's better than LCD for TVs ) I'm super happy.
Didn't even know LG made plasma TVs but I wouldn't be surprised if the actual screen is made by Panasonic or something.
Yes, I'd really like OLED but OLED would be great as a smaller PC monitor first and then for a large TV. For a TV I think plasma is fine but even though I got a good IPS LCD I'd just love an OLED 23-24 inch monitor.
I bopught my 50" Plasma last year. I just bought my LG 65" 4k TV this year because while 4k may not be prime right now i got a steal on it. My 4k is equipped with one of hte best IPS displays (after calibration) that I've encountered so far. The picture quality on this set easilty surpassed the other 4k TV's I was looking at in the electronics store probably because the display gets so dang bright.
Side by side with my Sammy 1080p content in my basement is a hit or miss. Blu-rays look great on both so its hard to say which one is "better". The upscaler on the 4k does a hell of a job processing the image because even up close I can't detect pixels. However on the Plasma with 1080p content I can see obvious pixelation while standing right in front of the television. Dark space scenes look better on my plasma thought w/o a doubt but only when the room is dark. Any amount of light seems to bring the IPS 4k display back in range with the Plasma.
Now on to 4k. Native 4k content on this TV is breathtaking; and takes the viewing experience beyond what my Plasma could ever offer. The clarity, sharpness, and amount of detail is simply stunning and I'm not wowed easily.
So will a good 1080p Plasma offer better contrast levels In a dark room than a good 4k LCD? Yes, Yes it will. Does that benefit translate into a better picture than a good 4k display showing native 4k content? Not in my viewing experience. Not even close. It's debateable @ 1080p as it is with my 2 TV's.
Also, as far as I recall, 2.2 gamma and the sRGB gamma are not exactly the same.
Image retention would have been useful to see as part of the testing. I have a 2008 Panasonic Plasma and although it has no problems at all with television and movies it has drastic IR with games. I don't know if it has something to do with me using a DVI to HDMI converter, but it is completely unusable with PC gaming because of IR and that is with the set even set to minimum brightness.
Also, as far as I recall, 2.2 gamma and the sRGB gamma are not exactly the same.
Image retention would have been useful to see as part of the testing. I have a 2008 Panasonic Plasma and although it has no problems at all with television and movies it has drastic IR with games. I don't know if it has something to do with me using a DVI to HDMI converter, but it is completely unusable with PC gaming because of IR and that is with the set even set to minimum brightness.