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Posted by Perroboc 3 hours ago

E Ink Kaleido 4(www.eink.com)
https://web.archive.org/web/20261015180401/https://www.eink....
86 points | 49 comments
ihuman 2 hours ago|
Mirror (eink.com isn't working for me): https://web.archive.org/web/20261015180401/https://www.eink....
okuntilnow 1 hour ago||
The contrast improvement is welcome for sure, but it remains to be seen what difference 15% white reflectivity makes.

Previous Kaleido products are fundamentally flawed. I'd hoped they would bin it for something better rather than make incremental improvements. Think it's also debatable what value colour brings unless you are regularly reading full colour magazines, PDFs etc.

smith7018 47 minutes ago||
Bringing full colour _and_ high refresh rate would move these out of the eBook world into more into every day technology. There's definitely a market for colour eInk monitors, tablets, phones, etc. but the technology just isn't there yet. More and more people are wanting to disconnect from tech or at least minimize its addictiveness and a colour eInk screen would be a great step for people. That way they can still watch youtube, take photos, scroll their apps but the experience will feel less saturated and alluring.
a2800276 29 minutes ago||
Not sure if you are being facetious, but how would eink displays with the same color vibrancy and refresh rates of conventional displays help "disconnect from tech"?
layer8 1 hour ago|||
50% contrast improvement is significant, but it’s from a base of only around 1:10, so will still be fairly low in absolute terms.
Shorel 47 minutes ago|||
If you don't want colour then any discussion about the shortcomings of this tech are moot, as you will use a display with much higher contrast.
szundi 1 hour ago||
[dead]
OptCohTomo 24 minutes ago||
https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-3-6017 See section 5 on Kindle display measurements by optical coherence tomography. The Kaleido display is similar but with a matrix color filter layer. Those images weren't published.
MattTheRealOne 2 hours ago||
Hopefully this means a new Kobo Libra before too long.
real_faxenoff 1 hour ago||
I've always wanted a color E-Ink tablet, but I could never figure out exactly why. Doctor, what's wrong with me?
thmoonbus 1 hour ago||
I find e-ink screens infinitely more pleasant to look at than *LED

I know that’s the point, but I also know some people care more than others. I happen to be one of those who cares a lot.

benoau 54 minutes ago||
E-ink tablets are also much more pleasant to hold for prolonged reading sessions!
blacksmith_tb 8 minutes ago||
Is that because they're lighter-weight plastic? That would appear to be one of the primary differences between a Kindle (until recently) and an iPad...
ncr100 1 hour ago|||
What do you mean - the color part? That is for information density.

Do you mean the e-ink part? That is for natural-light readability w/o requiring backlight, and for power-efficiency w/o requiring a heavy battery/frequent charging.

mulderc 48 minutes ago|||
In theory they should be amazing. Full color, looks like paper, basically an interactive magazine!

In practice the color isn't great, the screens are slow to refresh in an annoying way, and the resolution is a noticeably worse than an iPad. I also find that apps not explicitly made for e-ink are generally garbage when used on an e-ink device.

So far I have personally been incredibly disappointed with e-ink devices outside of e-readers. I want them to be good but the experience is just so much worse than an iPad.

qzw 1 hour ago|||
Me too. But it’s better than wanting a megayacht or some other more ridiculous affliction, isn’t it?
0cf8612b2e1e 1 hour ago|||
I justified one to myself to read papers that have colored plots. Eink performance is still so marginal that the experience is too frustrating to rely on, and I would rather use a tablet.

Maybe if you wanted to read comics that only ever had mediocre artwork?

wkjagt 1 hour ago||
I have one but wish I'd bought a monochrome one. I barely use the colors, but the whites aren't as white as on a monochrome one.
xd1936 1 hour ago||
I wish there was a DIY company targeting hobbiests that sold large poster-size eInk panels with tinkering in mind, like TRMNL or InkPlate.
ryanckulp 1 hour ago||
TRMNL made one of these, 31.5” spectra 6. will start selling in a few weeks. fully hackable
coinfused 1 hour ago||
I would love this as well. I dream of a clean dashboard for things like a shared calendar in my home.
packetlost 2 hours ago||
Too bad this didn't make it into the new Kindle Colorsoft. Oh well
prometheus1992 1 hour ago||
for anyone who already has a colored reader - is it better than ipad? i enjoy reading on my ipad and i can read for 2-3 hours on it daily without feeling any strain on my eyes.
wrxd 1 hour ago||
I have a Kobo Clara Color. I like the product but colors are mostly a gimmick. Useful for the occasional chart and for books cover and that’s pretty much it.

Don’t expect iPad quality color, they’re very washed out.

I think a dedicated e-reader is a great choice (I only read books, not comics or other graphics heavy documents) but for that grayscale would be more than enough and color is an extra.

I would recommend you to go to a store and have a look live at a color eink screen to get a feel for what they offer.

dombiscoff 53 minutes ago|||
I agree it's probably an unnecessary expense for 99% of people, but I actually find it very useful reading articles, news and academic work. Also, I really like the washed out newspaper look the colours have even though this makes them ill equipped for graphic novels.
giarc 42 minutes ago|||
My kids have Clara's and they love them for graphic novels. They had b/w kobo's before but would never go back (unless they stopped reading graphic novels).
torginus 45 minutes ago|||
Personally no. I've been reading a lot on LCD screens (PDAs if you know what those were), way back before eInk existed.

First, eInk used to be glossy, and not backlit which sucked, since you needed a light source to illuminate it well enough, but not so much that it shone on the screen and caused weird reflections.

After they added backlight, it became much better, but I'm not sure how it's better than an LCD (I dont think it is).

The only thing that sucks both about the iPad and most ereaders is the lack of physical buttons to flip pages, which makes 1 handed operation clumsy at best.

apparent 21 minutes ago|||
Kindle's color tablets look a bit better than Kobo's, by my estimation. But neither is anywhere near iPad-level color saturation or contrast.

I think Amazon does some special stuff with the backplane or something. Seems like it's not 100% marketing gimmicks if it actually looks better.

jkestner 53 minutes ago|||
I have a b/w page-sized Kobo, but I can tell you one nice thing vs the iPad is the weight. I don’t think the color (at lower resolution) is worth it for me.
Foobar8568 11 minutes ago|||
Colors are as vibrant as late 90s cheap laptops.
izacus 16 minutes ago|||
Why is iPad even mentioned here? This is better than iPad in the same way as a printed book is better than an oled TV.

They're two different things for different uses, one blasts light and colour in your eyes, other has a paperly look.

latexr 46 minutes ago||
> is it better than ipad?

Only you can answer that, “better” is a personal choice. A dedicated e-ink reader does less than an iPad (some see that as a bonus, others as a disadvantage). E-ink colours aren’t as vibrant and devices are slower, but the battery life, weight, cost, and reduced eye strain can more than make up for it.

If possible, I recommend grabbing one at a store nearby and playing with it a bit. You’ll soon understand if the weight, speed, and colours are enough for you.

BoingBoomTschak 2 hours ago||
Still nothing for people who don't care about the color gimmick? I mean my Aura One is still going strong, but I fear it'll never be replaced by something better (or even as good).
stuxnet79 1 hour ago||
Once I saw that Kobo was going all in on the color e-readers I decided I'm going to sit this whole trend out and bought another Aura One. Between it and the one I currently own they should carry me for a long, long time.

The Aura One is essentially perfect. The only gripes I have are the USB port and non-removable battery. It is a bit slow with the stock OS but with KOreader it runs amazingly well.

teroshan 2 hours ago|||
I'm in the exact same situation, still rocking an Aura One with KOReader and can't find anything with that form factor in black/white that satisfies me.

There's something to be said with a device that has a single purpose and supports custom firmware: other than the micro-USB port and the slightly shorter battery charge I don't think I will be changing it soon.

jdprgm 1 hour ago|||
I also have a kobo aura one and was just recently researching potential upgrades and was shocked even looking outside of strictly kobo that I couldn't find anything that was a clear upgrade or equivalent on various features against it. For a product almost ten years old it's so weird.
abletonlive 1 hour ago||
Color is a gimmick for e-ink now? I wonder if people thought the same thing when they brought color to television.
izacus 18 minutes ago|||
It comes with a massive loss of contrast so it's a bit of a gimmick, yeah.
abletonlive 13 minutes ago||
That doesn't mean it's a gimmick. Again, I implore you to actually look up what "gimmick" means. Just because there's a tradeoff doesn't mean that it's a gimmick. In fact, the very issue that you're talking about is something that is improving from Kaleido 3 to Kaleido 4. So even people that use this argument have something to take note of in this release.

When we went from black & white photography to color photography we also introduced a lot of tradeoffs. Would you have considered color photography a gimmick ?

jkestner 49 minutes ago|||
Color ink remains a niche in books.
abletonlive 41 minutes ago||
Perhaps revisiting what "gimmick" means would help you. Plenty of people use their e-ink readers to look at magazines, comics, news. Plenty of people have a highlighting system. Arguing that color is a "gimmick" is silly considering there are practical applications of color, as we can see around us in the real world. Some of you are seriously living in the weirdest of bubbles.

Biology spent a ton of time adapting and evolving for the ability to see color but sure, it's a gimmick. I guess you should consider syntax highlighting a gimmick in code editors as well? Charts/graphs in textbooks use color as a gimmick, any book that include illustrations/images in color are gimmicks

abletonlive 1 hour ago|
Amazon just refreshed their colorsoft kindles with Kaleido 3 so this is an interesting development. I wonder if Amazon had a heads up, I would have buyer's remorse right now if I bought a new colorsoft kindle recently knowing that there's a better version of the screen just around the corner.
mulderc 47 minutes ago|
I feel like amazon tends to wait a couple of years before using whatever the latest e-ink screen is and claim to do a lot of customization and calibration as compared to their competitors.
abletonlive 39 minutes ago||
They don't have a great trackrecord here with QA or any of that for all the waiting. The first colorsoft noticeably has an issue with yellow banding on the bottom edge. It's a well documented issue and if waiting was supposed to help with issues like that, it clearly did not.
mulderc 2 minutes ago||
True, although I do think people have generally thought the colorsoft was a bit better viewing experience than the Kobo color options. The QA seems to always be a bit off with amazon and I would always recommend waiting a bit before buying from them.
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