Exynos 8895 processor supports 4K video at 120 fps and 28MP cameras: Digital Photography Review

Exynos 8895 processor supports 4K video at 120 fps and 28MP cameras

Published Mar 1, 2017 | Lars Rehm

Comments

All (79)

Most popular (5)

Editors' picks (0)

DPR staff (3)

Oldest first

Aroart

Apple fanboy is supper jealous .... Actually not really .. Every Samsung product I've bought and tested was not as reliable as my Apple.. Tried Samsungs for Dji Phantoms and ap is glitchy.. Have a Note 12.5 pro and crashes way to much in my art aps compared to my iPad pro .. Had to return my Note 7 a little problem with the battery..

6 months agopermalink

xslavic

Samsung and Android is not for everyone.Its a professional tool , not like your DJI.

6 months agopermalink

coreyweb

I'd love to see this level of R&D/tech come to bigger sensors. Come on......what's the hold up?!

6 months agopermalink

jimrpdx

I'm not sure I want to know how It recognizes those are boys and not girls..

6 months agopermalink

Massimo480

People keep talking about SENSOR SIZE and making comparisons with older technologies. Remember when Computers were the size of an entire room? How big are Computers now? Smaller than your hand.

I'm very curious about this new processor!

6 months agopermalink

jwasturias

Can a small mobile phone sensor with even the best possible lens resolve 28mp?
I read somewhere that a 18mp dslr far outresolves that super high resolution Nokia phone (Nokia Lumia 41 Megapixel Camera Phone) in terms of real pictures.

6 months agopermalink

wakaba

A full size sensor in a Nikon 600 and a good prime lens - is waaay better. Its does not compare whatsoever - with any kind of phonecam - and I had the Lumia. I downgraded to a Lumia 640xl because there was no gain - phones are just crappy sensors with crappy plasticlenses. This chip however might just be what Nikon needs to make a Mediumformat DSLR Back with 4k vid.

6 months agopermalink

ewitte12

The very "sharp" 1.8 prime I have on my 24MP APSC DXO rates at 15MP. The best I've seen for 24MP APSC is about 17MP. This lens gets about 19 on a D610 and 28 on an D810. If the optics can't support 24MP on APS-C it isn't going to on a phone! Probably not even 8-10 which is what cheaper lenses get on APS-C.

6 months agopermalink

wakaba

Agree. The max 28 is also only the lenscenter and only on a perfect cold day in a lab in a closeup. At 28 or more you start to see the air vibrating and the sensor vibrate when heating up.

6 months agopermalink

Raintitan

Think of the megapixels as a more accurate way to "round" the image pixels with more precision. With a more precise grid, a large square can still be positioned more accurately even if the square is lacking in detail. The point is that in many scenarios there are gains with rasterization precision. Laser printers have leveraged this for years.

6 months agopermalink

Enginel

@jwasturias
You read, that is. You should have looked at images -- Nokia 808 has an edge in resolution over 18 mp aps-c.

6 months agopermalink

xslavic

..i personally dont think so, but technology evolves.I can get 35mp sharpness from 42mp sensor.

6 months agopermalink

sportyaccordy

I hope Samsung buys Nikon and gives them this tech. It's a shame it's being wasted on cell phones.

6 months agopermalink

digilt

If Nikon uses the battery from Galaxy Note 7 and Samsung uses Nikon's DL product development experience on their phones, that would not be good.

6 months agopermalink

George1958

Worth remembering that Samsung had a strong product range with its own cameras but got out and left its camera customers in a difficult position.

Perhaps if we stopped using mobile phones as an image capturing device, bought a small compact instead , then Nikon and others would flourish?

As much as i have to admire the technology and innovation by Samsung and the like I will always carry a compact and use it over my cell phone on principle.

There was a time when we could not get by without the traditional camera industry. Why not support them?

6 months agopermalink

sportyaccordy

Eff principle. Do you process all your digital photos at a film store too? Times change. Compacts are increasingly worthless. Camera companies need to make products that deliver value to customers.

6 months agopermalink

vFunct

Nikon could just as easily buy these chips to replace their Expeed chips.

And they might be forced to do that and buy their ISP from an outside vendor like Samsung since the flaws in their own chips were apparently the cause of the DL line cancellation.

6 months agopermalink

George1958

sportyaccordy, I agree that times do change but my reference point is not past technology. I don't agree that compacts are worthless. Sony, Canon, Fuji and Panasonic still think there is demand for compacts and in the round they are impressive devices that are more caperble than mobile phones.

Equally I do not see the value characteristic of mobile phones. They are expensive, you are tied to another contract (add your cellphone contract to that of your broadband and multiply x 12 and see how much you pay) In some instances the IO is buggy, the product refresh cycle keeps you spending on upgrades, they are not especially or consistently good at their primary purpose, voice messages, after which you are left with a bunch of fun gadgets and gimmicky apps that are not strenuous to live with out.

IMHO cell phone are over rated, over valued techno junk. I am amazed that any one is impressed with them. There are plenty of superior alternatives available for photography both older and new.

6 months agopermalink

ewitte12

TBH they are good for what they are in good light. I was about to get a secondary M43 for size and was less than impressed. If I had paid what I did for the DLSR I'm sure I would have had a better experience but for a cheap secondary camera??? I really love the performance on my D7200 with a good stabilized prime lens though.

6 months agopermalink

sportyaccordy

Camera companies can think whatever they want.... CIPA shipments show customers (the group who's opinion matters) don't.

You intentionally ignore the obvious value proposition of mobile phones. For photography they are obviously inferior to real cameras, but they are called smart phones, not camera phones. Here's a SHORT list of some of the devices they've replaced:

- GPS navigation
- MP3 music players/radios
- universal remotes
- clocks/watches
- personal computers (for some)

Etc.... you can get a phone with all that and a (admittedly seriously limited) camera for $50.... how exactly is $50 for all that capability "overvalued"? Are you one of those weirdos who makes it a point to use their phone for nothing but the phone part? If so that is your personal choice and in no way a poor reflection of the phone itself.

6 months agopermalink

trungtran

In the future, DPreview would be more about cellphone cameras.

So much tech in cell phones these days to discuss while we wait for 1d and 5d releases.

6 months ago*permalink

George1958

Sportyaccordy if we disagree then that is ok and surely does not justify calling others weirdos for holding opinions that differ from your own.
Most of the devices you mention have no value to me personally. Being able to reliably make a call when needed should be a triumph for me. I would not bet my life on a smart phone given current performance.
At least we do agree that smart phone imagery is sub par next to cameras.
As for value , it's how you calculate it. Currency is one thing, real world Improvements to you life is another and I am talking the things that matter. Smart phones don't matter all those most are deluded to into thinking they do by skill full marketing. Truth is they are expensive toys and are socially corrosive in many situations

6 months agopermalink

DesoloZantas

PLEASE MAKE MIRROR LESS CAMERAS AGAIN WITH THIS NEW TECH
DX

6 months agopermalink

IdM photography

A chip? Is that of any interest for a photographer? Maybe there are other pages better suited to publish such news...

6 months agopermalink

Lars Rehm

if you read the article you'll see that it very much focuses on the camera capabilities that this chip enables on a device it is implemented in.

6 months agopermalink

Objectenco

Well, by reading this type of news, you get a feeling what is coming into a DSLR in near time....

6 months agopermalink

sh10453

Nice processor!
This coincides with today's release of AMD's powerful Ryzen, 8-core processors for the desktop computer market.
Time to build my new desktop.

6 months agopermalink

photomedium

I'd stick to the Intel new i7 7700 'baby kale' or whatever its called.

6 months agopermalink

sh10453

I think you need to read reviews about the new AMD Ryzen 7 line of 8-core, 16 thread processors (1700, 1700X, and 1800X).
I have been building desktops with Intel and AMD processors for over 20 years.
I will not go back to greedy Intel.
AMD's launch is today, and the 1800X is already out of stock.
Initial launch batch of the above 3 processors was 1 million. So they have been very well received by computer builders and enthusiasts.

6 months agopermalink

sh10453

Also, the i7-7700 is a 4-core processor, and sits at the bottom of the line of the i7 processors. Intel's i7-6900K is $1050. AMD's 1800X beats it hands down at $500.

6 months agopermalink

Favorable Exponynt

let's do a AMD vs Intel war :p

6 months agopermalink

photomedium

sh10453,
I built several clusters for computer simulations in my time and I left AMD behind in 2005-7. It simply could not compete. I use intel Xeons and I could not be happier. You get what you pay for.
This ryzen does look nice and I like the name.

6 months ago*permalink

sh10453

Yes, I agree. AMD went to a deep sleep for a whole decade, but they are now Ryzen from the ashes :)
I almost bought an 18-core Xeon on ebay less than a month ago, but I lost the bid.
The Xeon is a hell of a powerful processor, especially the V3's and V4's, in the E5-2690's range..
I went to order the Ryzen 7 1800X this morning from Newegg, but the site said it is out of stock.

6 months agopermalink

Peiasdf

No point in getting 1800X or 1700X, just get the 1700 if you are looking to compete with Intel on price as they all have the same cores and everything except clock speed.

I haven't see the number on power and heat though so I'd suggest you wait till the numbers are out before buying.

6 months agopermalink

sh10453

I agree about waiting, but the 1700X or the 1800X is a better choice.
Tom's Hardware is in the processing of doing a review, but their frustration is that neither the applications, games, etc., nor the testing software has been optimized for the Ryzen. It will take time.

6 months ago*permalink

ShatteredSky

Hmm, time to save up for that NX700 I have been waiting for :-D

6 months agopermalink

guest2015

if i start saving up now for this sensor i'll be able to afford a flagship phone by 2027

6 months agopermalink

sh10453

"if i start saving up now for this sensor i'll be able to afford a flagship phone by 2027"
A used one you meant!!!

6 months agopermalink

guest2015

yes a used or refurbished

6 months agopermalink

Combatmedic870

Well first we need a smart phone camera sensor capable of 4k @120fps.

6 months agopermalink

ovrebekk

Not really. The content doesn't have to be created on a phone to be watched on a phone.

6 months agopermalink

Dragonrider

And what is the point of watching 4k on a phone display? You can't see the pixels on a 30" 4k display so putting that many pixels on a 5" display is nuts.

6 months agopermalink

Combatmedic870

I wasnt talking about watching anything. I said camera sensor.

6 months agopermalink

Dragonrider

Sorry, I was referring to ovrbekk's comment. A good 4k sensor would be useful, but the required processing is probably a bit of a power hog even at 10 nm.

6 months ago*permalink

ovrebekk

I guess VR (where you use your phone for the display) is the only way to really utilize 4K on a 5" screen, but the processor could obviously be used for tablets, smart TV's and other things as well.

6 months agopermalink

Dragonrider

Oh, I think that processor or one similar will be used in phones for capture as sensors progress and once you have captured 4k material you need a 4k player to decode it, even if the display can't use the resolution effectively.

6 months agopermalink

cosinaphile

i hope to see this amazing new processor with 27 percent better perf but 40 percent less power cons. in a phone by moto zte .. others

6 months agopermalink

zodiacfml

I kinda wonder why we never see such CPUs/SoCs in cameras regardless of cost.

6 months agopermalink

Peiasdf

Because you won't be willing to pay the price. GH5 is $2000 and it comes with crap sensor.

6 months agopermalink

pkcpga

Doesn't mention if it's fire proof?

6 months agopermalink

photomedium

Canon users take a good look because you'll never see one of those from your favorite No1 camera maker! Only yester-decade tech in those.

6 months agopermalink

J A C S

Will Nikon, Sony, etc., users see it ever? Why you are obsessed with Canon?

6 months agopermalink

RayVagh

I bet the last image will win every photo contest 2017 because technology alone is everything!

6 months ago*permalink

teh herp3r

True, you will probably never see this in any canon, nikon, DSLR, or mirrorless camera.

6 months agopermalink

trungtran

Not buying a Canon camera unless it has 4k

6 months agopermalink

RedFox88

Of course not. It's a tiny phone sensor!

6 months agopermalink

ivan1973

as if every one here has a 5K monitor for editing or 4K TV to view it.

6 months agopermalink

Satyaa

I wish that Samsung comes back into making camera sensors though they went out of camera market. They will be such a good match to the Sony sensors.

If they just increase that 28MP resolution to 32, that would cater to 8K videos!

6 months ago*permalink

Peiasdf

If Samsung were ever close to Match SONY, Samsung smartphone wouldn't have to use SONY sensor would it?

6 months agopermalink

AngularJS

Hope Samsung will be kind enough to donate a few chips to Canon :)

6 months agopermalink

Mared

It would be great to see them integrated into Canon products. Of course Canon would turn off six of the processor cores, down rate the 4k to 1080, turn off machine vision, etc. and charge 10 to 20% more all in the name of protecting their other lines...

6 months agopermalink

Flashback

All that just for selfies. . .

6 months agopermalink

Shlomo Goldwasser

It is at times like this that you wish Samsung was still in the camera market to bring over these goodies.

6 months agopermalink

villagranvicent

Exactly, it is a shame they drop the towel!

6 months agopermalink

asdf photographer

I wish they'd sold their NX line to Nikon, as rumored.

6 months agopermalink

zodiacfml

Samsung can simply put this SoC on a high end APSC camera such as the NX1 and obliterate all the competition in terms of frame or data rates while having Wi-Fi and an LTE connection that uploads photos or videos in realtime.

They were even ahead of Sony by releasing the NX1 with a back illuminated sensor.

Is the camera market really that small for Samsung to abandon it?

6 months agopermalink

badi

zodiacfml, Samsung can do whatever they want ... provide 8k video at 120fps and store it real time to a private server on the moon - they will not gain the trust of professionals back.

6 months agopermalink

Revenant

"Is the camera market really that small for Samsung to abandon it?"

According to CIPA, the Japanese manufacturers (which account for the vast majority of cameras sold) shipped 24.2m digital cameras in 2016 (12.6m fixed-lens, 8.4m DSLR, 3.2m mirrorless).

That's not a huge market compared to, say, smartphones. Also, the market is still shrinking, and Samsung reportedly had a very small market share, so they probably didn't think there was much prospect for growth, despite making excellent cameras.

6 months agopermalink

Peiasdf

@zodiacfml
You are thinking back with rose colored neurons. Samsung never beat SONY in sensor. Samsung released a BSI APSC sensor and hailed it as some feat of engineering and SONY dropped the BSI FF sensor in A7R II and Samsung closed shop.

Before Samsung's APSC BSI sensor, the largest BSI sensor is the 1" from SONY. Samsung wasn't aware how far ahead SONY was when Samsung announced the APSC sensor.

6 months agopermalink

TheDarmok74

The obvious question being if they Put it in the S8.

6 months agopermalink

mick232

I think the answer is at least as obvious as the question.

6 months agopermalink

Lars Rehm

apparently nobody is releasing any devices with Snapdragon 835 because Samsung has grabbed them all for the S8...that said the Exynos could be implemented in the Asia region version of the S8...

6 months agopermalink

TrojMacReady

As usual, there will likely be two versions, the Qualcomm Snapdragon (SD835 in this case) and the Exynos version (8895). The only recent exception was the S6, which was released with Exynos SoC's only.
The Exynos S7 (as most other Exynos versions) was released in Asia (minus China) and Europe. So it's likely that Europe will receive the Exynos version of the S8 too.

To me, the more interesting question is, whether the SD835 equipped S8 will end up with inferior specs to the Exynos version, because the latter SoC is simply more capable when it comes to 4K recording and playback (120fps vs 30 fps), or whether they will cap the Exynos version to the limit of the Snapdragon version... I hope the latter is not the case and I can think of one precedent, where the Exynos version of the S4 was capable of 120 fps 720P recording, where as the Snapdragon version was not.

6 months ago*permalink

Rob Bernhard

[[apparently nobody is releasing any devices with Snapdragon 835 because Samsung has grabbed them all for the S8]]

http://www.trustedreviews.com/news/snapdragon-835-phones-processor-specs-speed-benchmark-chipset-cores

This claims that Sony is using the 835.

6 months agopermalink

Lars Rehm

yes, @Rob Bernhard, but the Sony is not going to be available before June or so, by that time there will be enough 835s for everybody :) The S8 is expected to launch late March.

6 months agopermalink

Rob Bernhard

I realize that, in internet-time, slightly more than 2 months to some may as well be 2 centuries, but I find the use of "nobody" and "any" a bit of a stretch here. But, hey, what would the internet be without unpicked nits? :)

6 months ago*permalink

Robert Zanatta

The S8 will not be announced until March 29, and release is expected by the end of April. It will use both the Snapdragon 835 and the Exynos 8895.

Sony uses the Snapdragon 835 in their newest smartphone.

The S7 uses the Snapdragon for the US market, and the Exynos for the rest of the world.

6 months agopermalink

DPPMetro

Only thing bad about this is that, unlike the Qualcomm processors, no hacking can take place to unlock the bands from different regions. This is a severe shortcoming in Samsung phones for those of us that travel. However, we can get around Samsung's territory restrictions by rooting and turning the bands of the destination country on.

6 months agopermalink

Sezano

Don't travel so much

6 months agopermalink

iZugar launches 220-degree super fisheye lens for Micro Four Thirds

The new iZugar 3.25mm F2.5 super fisheye lens offers an insane 220-degree angle of view. That means it can basically see behind itself... good luck keeping your feet out of the shot.

Sep 23, 201729 lens news

Apple's auto-generated Memories videos are still kind of weird in iOS 11

You'll laugh, you'll cry, you'll remember that time you took a picture of the frozen pizza baking directions.

Sep 23, 20177 mobile

Craigslist poster raises the bar on terrible car photography

A Craigslist poster has discovered the worst possible way to photograph a car: taking pictures of pictures displayed on a cracked and scratched up smartphone screen.

Sep 22, 2017141

The iPhone 8 Plus is the best smartphone camera DxOMark has ever tested

With the iPhone X coming out soon, the title probably won't last, but the iPhone 8 Plus is officially the best smartphone camera DxOMark has ever tested, and the iPhone 8 is second.

Sep 22, 2017276 mobile

This Kodak Moments chatbot digs through your old photos and tries to sell you prints

Kodak's new Facebook Messenger chatbot is trying to bring back the 'Kodak Moment' by digging up your old social media photos and trying to sell you prints and custom coffee mugs.

Sep 22, 201730

Affinity Photo for iPad adds extremely useful drag-and-drop feature with iOS 11 update

Affinity Photo for iPad was touted as "the first full blown, truly professional photo editing tool to make its way onto the Apple tablet." This update makes it that much more convenient.

Sep 22, 201728

Yashica teases 'Unprecedented Camera': Coming to Kickstarter in October

Yashica has released a new teaser video, and this one claims they'll be releasing an "unprecedented camera" in October on Kickstarter. Ready... set... speculate!

Sep 22, 2017114 camera news

Synology launches its first 6-bay NAS tower, updates more affordable options

Storage solutions company Synology has just released its very first 6-bay NAS tower. Combined with the DX1215 expansion units, it can hold and control up to thirty drives.

Sep 22, 201714

New product overview videos: Canon EOS 6D II and more

We're always expanding our collection of product overview content, and we've just added videos for the Canon EOS 6D Mark II, the EOS Rebel SL2 and EOS M6.

Sep 22, 201784 video

Throwback Thursday: the Canon PowerShot G1

The venerable Canon PowerShot G1 was announced seventeen years ago this week, marking the start of a line of enthusiast-focused compacts that's still alive and kicking.

Sep 21, 2017138

Incredible microscopic close-ups of a peacock feather

Super macro photographer Can Tuncer captured these incredible close-ups of a single peacock feather using a special setup and three different microscope lenses.

Sep 20, 201795

Oprema Jena revives Biotar 58mm F2 lens with record-setting 17 aperture blades

After successfully crowdfunding the Biotar 75mm F1.5, Oprema Jena is at it again. This time they're bringing back the Biotar 58mm F2: the world's only lens with a 17-blade aperture.

Sep 20, 2017127 lens news

Adobe announces record-breaking $1.84 billion in revenue for Q3

Adobe's move to a subscription model is treating it very well indeed. The company has posted record revenue for the second quarter in a row, hauling in a mind-boggling $1.84 billion.

Sep 20, 2017450

Report: Blackstone working with Morgan Stanley to sell 45% Leica stake

More details have emerged about the potential sale of Blackstone's 45% stake in iconic camera brand Leica.

Sep 20, 2017106

Snapseed app updated with new interface and presets, adds perspective tool to iOS

Popular mobile editing app Snapseed just got a major update that includes a new interface and 11 new presets for both Android and iOS, as well as adding the Perspective tool to the iOS version.

Sep 20, 201750 mobile

Photo Experiment: Shooting macro photos of boiling water

It might sound like a strange idea, but taking macro photos of boiling water can actually result in some really cool photographs. A good photo experiment for a rainy day.

Sep 20, 201737

Diversify Photo launches database of photographers of color to promote diversity

The database was created to "break with the narrow lens through which history… has been recorded" by equipping those who commission photography with "the resources to discover photographers of color available for assignments.

Sep 20, 2017170

Lensbaby unveils Creative Bokeh and Sweet 80 optics

Lensbaby has released two new optics for their special "optic swap system." The Lensbaby Sweet 80 Optic gives you that trademark sweet spot of focus, while the Creative Bokeh optic gives you 9 different drop in aperture plate options to play with.

Sep 20, 201726

iPhone 8 Review: Pushing the limits of photography

TechCrunch has already posted their review of the upcoming iPhone 8 (not yet the iPhone X), and they're calling it "a look into the augmented future of photography."

Sep 20, 2017techcrunch.com 34

Review: Affinity Photo 1.5.2 for desktop

Affinity Photo is a $50 photo editing software with no subscriptions. That's it – pay for it once and you're done. And we think it's actually pretty darn good.

Sep 20, 2017260 review

Instagram is testing a four-photo grid, and some users are freaking out

Instagram is currently testing a major change to the app's profile layout: replacing the 3-photo across grid with a 4-photo grid... and some users are NOT taking the news well.

Sep 19, 2017108

Zenit's full-frame mirrorless camera will use components made by Leica

A report by USSRPhoto is shedding some light on the return of the famed Zenit camera brand. It seems the full-frame mirrorless camera they're working on will be made in part by Leica using components from the Leica SL.

Sep 19, 2017230

Report: Samsung is developing a 1,000fps mobile image sensor

According to a reliable Korean report, Samsung is developing a smartphone sensor that's capable of super slow motion. Translation: Samsung's next batch of Galaxy smartphones may be able to shoot 1,000fps.

Sep 19, 201770 mobile

This is the story behind that tragic, viral photo of a seahorse holding a Q-tip

This simple photograph of a seahorse and Q-tip has taken the internet by storm. We spoke to photographer Justin Hofman about how it was captured, and what it means to him.

Sep 19, 2017201

The Profoto A1 is the 'world’s smallest studio flash' and Profoto's first on-camera flash

After a massive leak last week, Profoto has officially debuted the Profoto A1: the company's first on-camera flash system that they're calling "the world's smallest studio flash."

Sep 19, 201798

Why hyperfocal distance charts are inaccurate

"When the first hyperfocal distance charts were designed, someone decided that an acceptably sharp background contained some blur — enough to notice in a medium-sized print [...] After that point, nearly every other hyperfocal chart followed suit."

Sep 19, 2017Photography Life 40

Canon EOS Rebel SL2 / EOS 200D Review

The Canon EOS Rebel SL2 (also known as the EOS 200D) is the company's impressively compact entry-level DSLR. Packing a 24MP APS-C sensor, DIGIC 7 processor and Dual Pixel AF, it promises a lot of bang for the buck. And while not mind-blowing, it handles most tasks very well.

Sep 19, 2017469 review

Video: Four common composition mistakes and what to do instead

Correct these four common composition mistakes and your photos will be more balanced, tell a better story, and lead your viewer's eye where you want it to go.

Sep 18, 2017137

Kodak PixPro Orbit360 4K VR camera now on sale in the US

The rugged, compact 360° action camera Kodak unveiled at Photokina in 2016, the Kodak PixPro Orbit 360, is finally available in the United States.

Sep 18, 20177 camera news

Bookmark this HEIC to JPEG converter if you're upgrading to iOS 11 tomorrow

iOS 11 launches tomorrow, and it'll save all of your pictures in a new high efficiency image format called HEIC. Fortunately, there's now a converter that will let you turn those photos back into JPEGs.

Sep 18, 2017161

Tips or suggestions? Contact us!


Report: Samsung is developing a 1,000fps mobile image sensor Sep 19, 2017	Apple's auto-generated Memories videos are still kind of weird in iOS 11 Sep 23, 2017	The iPhone 8 Plus is the best smartphone camera DxOMark has ever tested Sep 22, 2017	Snapseed app updated with new interface and presets, adds perspective tool to iOS Sep 20, 2017


.....the ROYAL LOTUS 2017/08/25-NEW YORK..... by Chiwat from Wild flowers	Coffee and Mango cake by clicker88 from Another cup of coffee