Would a 60mhz 46 inch LCD TV produce less quality video than a 60mhz 40 inch LCD TV?
After custom setting the video based on my preferences on a 40 inch LCD TV with 60mhz cycle, we watched the last Harry Potter film and then Phantom of the Opera, both in Blu-Ray discs. The video quality was great, perfect for me with its lush, vibrant and crisp contrast and colors.
Wanting more screen size, we exchanged the 40 inch with a 46 inch. Same brand, same model line. When I duplicated my preferred custom video settings however, I couldn’t get the same rich and satisfying video quality that I got from the 40 inch.
Did I make the mistake of assuming the 46 inch would perform as well as the 40 inch when it just plain couldn’t since they both run on mere 60mhz cycles? Would there be any way for me to compensate at this point? We really prefer the bigger screen. Thanks!
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That’s because HDTV sets have a screen ratio of 16:9 and a resolution of 1920 by 1080 pixels regardless of the size of the screen. So when you moved to a bigger screen, the pixels got slightly larger. While not readily obvious, your brain is probably noticing a more grainy picture. There’s also factors besides MHz that affect picture quality. The quality of the darks, for example. Staying with the same brand and same model line doesn’t mean all things are equal except for screen size. To keep costs down, the maker could have skimped on quality on the bigger set so that the price would be just a little more.
@HungryGuy I’m afraid you’re right. The difference in cost was just 100 bucks. : )
As HD is a standard size of 1920×1080, the only way to maintain conformance with the standard is to make the pixels bigger. I like small pixels, Apple brags about small pixels, so therefore, pixel density matters; higher is better. And now you know why I went with a 32” instead of a 46” or larger. I use mine as a computer monitor, and from my normal working distance, the pixels disappear.
The 60Hz has nothing to do with it; it’s all about the size and number of pixels, as well as the backlighting. A larger screen generally has either a dimmer backlight, which screws with your contrast, or a higher price tag. Now, can your 46” get as bright as your 40” did if you crank the brightness? It may be just that the same settings don’t work.
Also, as far as MHz goes, higher isn’t always better. I know this isn’t your case, but once you go beyond 120 MHz, the higher refresh rate actually causes the image to degrade and causes herringbone patterns and other distortions in the image.
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