12-06-2010, 01:49 AM | #1 |
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Screen flickering and color blotches?
Hello,
I was just wondering if anyone else had the same issues with their NOOKcolor. The first is screen flickering where it appears to look fuzzy, especially when lowering the brightness. This doesn't always happen, but I've noticed it a few times. Also, when watching movies or looking at images, in dark areas the colors tend to look blotchy/dithered. There's isn't a smooth transition between the colors. For instance, I downloaded the following image (iPad 1024x1024 version) and set it up as my wallpaper. The darker top half looks pretty bad, with patches of blue that don't blend in well. Same goes for movies. Does anyone else notice this? http://interfacelift.com/wallpaper_b..._sunlight.html Thanks for any help in advance! |
12-06-2010, 01:54 AM | #2 |
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The first thing I'd say is get a correct resolution image (this isn't an iPad and isn't 1024x1024). Re-sizing for display rather than actually resizing to true 1-to-1 pixels is always quirky, even on a high-powered Windows PC or Mac. Frankly, this seems to describe the problem you're referring to. As for movies, I've yet to read anything that says the NOOKcolor does movies well. Then again, I also think that watching movies on a hand-held device is moronic... I have a 46" TV at home, why do I want to watch movies on a tiny screen in my lap? I've had movie-capable laptops for 10 years and never once watched a movie on them.
Anyway.... I'm curious, but haven't seen or heard of these problems. |
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12-06-2010, 02:26 AM | #3 |
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12-06-2010, 02:36 AM | #4 |
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Well, the resolution is close enough to iPad so I just go with it. I don't know the exact size since the wallpaper moves to the left and right when looking at the other home screens, but it's close enough. I don't think that has anything to do with the color dithering.
The flickering seems to be pretty constant when pulling up the menu using the small arrow at the bottom of the screen. When the gray screen overlay appears, it flickers. After making a selection, it goes away. |
12-06-2010, 02:49 AM | #5 |
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I've noticed that as well at low brightness. Like you said, the gray screen overlay is where it's pronounced. I haven't experienced any other flickering.
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12-06-2010, 02:52 AM | #6 |
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I, too, use the iPad resolution wallpapers. I change my wallpaper on a regular basis using the images from the same website. I haven't encountered any that look bad. What about other images from the site?
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12-06-2010, 03:03 AM | #7 | |
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Quote:
http://help.adobe.com/en_US/creative...gif_dither.png It may just be that the display can't display that many colors, but wanted to check if anyone else thought it was particularly noticeable. |
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12-06-2010, 03:11 AM | #8 | |
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Quote:
Here's a thread with links to high quality video clips you can test. https://www.mobileread.com/forums/sho...=107571&page=3 This is the link to one of the test files if you don't want to read the thread in its entirety (only 18MB): http://www.mediafire.com/?oz0baqsy5sli8sf |
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12-06-2010, 03:51 AM | #9 |
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Thanks for the links. I actually found and copied over those very movies just before your reply. For the most part, they look great. The dithering is still noticeable in certain shots (dark clouds in the sky, some of the darker shots in the Tron trailer), but it's not terrible. My guess is that it's a screen limitation and that I'm perhaps looking a little too closely.
I don't notice the effect on my iPad with the same movies, but it's not a deal breaker. The flickering worries me a little more, but I'll wait it out and see if anyone mentions it as well. There's a user on the B&N forum asking about it, but no one seems to have a response. |
12-06-2010, 04:07 AM | #10 |
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I saw the post that you were referring to on the B&N forum. His sounds like an extreme case if he's noticing the flickering while reading (should have exchanged it). I don't have that issue and I keep my brightness setting at 1/3 or less. I do use the night mode without noticing any flickering. Until you pointed out the gray overlay scenario I hadn't noticed it. I guess because I was looking for it.
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12-06-2010, 08:46 AM | #11 | |
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Quote:
The nookcolor doesn't rescale images down for its desktop, which is a wee bit annoying. What I do is resize them on my PC before transferring them over. It is the best way to get quality images. |
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12-06-2010, 09:29 AM | #12 |
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I was going to chime in to say that I think the Nook does video exceptionally well. They just have to be converted correctly to begin with. I'm very happy. I make sure to turn the brightness up prior to watching a movie but they play smoothly with great color, crisp and audio and vidoe are 100% in sync.
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12-06-2010, 03:19 PM | #13 | |
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Quote:
No? |
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