02-07-2012, 05:02 PM | #16 | |
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I am not sure, but I think there is a slighlty coloured edge on the letters of the JetBook. This could suggest that in BW mode all subpixels are being used as if the filter wasn't there and in normal viewing you won't notice the edges. Furthermore the microscope shots on the italian forum reveal a trick used: every second line of filtered pixels is shifted one subpixel to the side, so you can achieve a black pixel of any four blackend subpixels grouped in a square. There is some noncoloured space between the filters too which helps getting things higher contrast in BW, but gives lower colour saturation. So all that being said, I think the jetBook can indeed retain the 1600x1200 resolution in BW mode and even something better than 800x600 in colour mode, with smart filter layout and perhaps a little "cheating". The downside is the visibly lower overal contrast of the whole screen. Will need good lightning for comfortable reading. |
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02-07-2012, 05:15 PM | #17 | ||
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02-07-2012, 09:57 PM | #18 |
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Just try to take a picture with a magnifying glass, no need for expensive lenses :-)
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02-08-2012, 12:59 AM | #19 | |
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please note that the analysis I done was performed on an early Triton prototype. Maybe the production Triton can differ from the tested one. Unfortunately the prototype I tested wad a non-working unit, so the image was a still image. This is an almost white portion of the display: Luke Last edited by eBookLuke; 02-08-2012 at 01:05 AM. |
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02-08-2012, 02:11 PM | #20 |
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jetBook Color screen at 400x
Here we go, my first attempt with a shiny new USB microscope. This shows the intersection of a one pixel diagonal line and a one pixel horizontal line. You can clearly see the driver uses individual sub-pixels for black, giving a slight colour fringe from the "left over" sub-pixels of each 2x2 block that are set at white.
Many more pictures to come I'm sure when I get the hang of it... (click to embiggen...) Andrew |
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02-08-2012, 02:57 PM | #21 |
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interesting!
On the earlier triton model you had the diagonal pixel setup, on the picture you sent there's a vertical pixel lineup, which is better for text). Each pixel switches between their color and black. The 4 colors are rgb and white. Which means the jetbook's strength actually lies in displaying black, and it's weakness in displaying color. I presume a white back ground is all pixels in 'open' position (meaning not black)? And what happens when you eg want to see a blue screen (00,00,ff), how does it display that color? (I presume by closing red and green, and leaving white and blue open)? Also interested to know what would happen when one of the pixels would be half open (eg displaying a darker or lighter blue (color 88,88,ff ; and 00,00,88),how would those look? Last edited by ProDigit; 02-08-2012 at 03:02 PM. |
02-08-2012, 03:12 PM | #22 | ||
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One thing I do find interesting is how black the black is - if only they could lighten the areas that are supposed to be white and still have colour capability. Andrew Last edited by andyh2000; 02-08-2012 at 03:15 PM. |
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02-08-2012, 09:01 PM | #23 |
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I suppose it's either this way, or have each pixel switch between white and color. In such case your whitest white will be white, but also your darkest black will be somewhere around light grey.
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02-09-2012, 06:51 PM | #24 |
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Hello,
Nice review. Me too I'm interested in acquiring a color Jetbook to read technical pdf and research papers. Could you try this one http://www.plosbiology.org/article/f...esentation=PDF and report how the jetBook is handling this 2 columns document with colored diagrams (e.g. page 7). Besides, could you show us how the Jetbook is handling the same document with pure b/w text (e.g. page 9) Thanks |
02-09-2012, 07:26 PM | #25 |
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Just got my Jetbook color so I thought I would help too. I loaded the pdf in the above post and the text is small. It is readable but it is the absolute smallest and it is a strain to read. You can zoom in but the whole zoom functions seems slow and clunky to me. Colors look fine. Best way I can explain the colors is that it looks like how color ink is printed in newspapers. Just my quick $.02 before I leave computer the day. Sorry for the blurry pic, was in a hurry.
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02-10-2012, 04:37 AM | #26 | |
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I'll try and take a decent photo of it tonight if someone hasn't beaten me to it. Andrew |
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02-10-2012, 05:38 AM | #27 |
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Excellent, thanks netboy and andyh2000
Indeed, this is the article explaining how a telepathic interface could be constructed, some day, LOL My point was to see how colors were rendered, seems good to me Besides, it was also to compare pure black and white documents with a pdf page containing color. My understanding is that the color filter is applied only to the surface containing a color to render (hypothesis can be checked against pure b/w pages e.g. page 9 of the aforementioned pdf document). So on the other parts (black and white or up to 16 shades of gray) the color filter should be transparent thus achieving a full 1600x1200 resolution on the not colored surface, ie the text). As for zooming in and out, it seems that the forthcoming iPad 3 (available next month(?) with its 2048 x 1536 retina display will be the best, but not for outdoor reading. So probably I'll end up with both devices, one for day light the other one for nocturnal study ;-) |
02-10-2012, 06:08 AM | #28 | |
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02-10-2012, 12:47 PM | #29 |
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If what you say is true, then a page containing a text with a tiny colored image would look worse than the same text from a page without the colored image, could you confirm this?
Color is not essential to me but crisp text from 2 columns research papers produced from LaTeX are the main rationale for this purchase. Of course, there is still the Onyx Boox M92 and the Hanvon WiseReader E920 to consider, do you know if those are substantially better than the Ectaco color JetBook when rendering b/w documents? |
02-10-2012, 01:31 PM | #30 |
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