28 votes
Accepted

How can a camera be both 12MP and 1080p, when 1920x1080 is just 2,073,600?

The 12MP designation is usually used to refer to still photography while the 1080p designation refers to video. The sensor has 12 megapixels - sometimes a little more which gets masked out. This ...
user avatar
  • 101k
19 votes

How can a camera be both 12MP and 1080p, when 1920x1080 is just 2,073,600?

1080p refers to video: 1920×1080 progressive scan. The phone is capable of 12 Mpixel still images but only 1080p video. (This is fairly typical; it takes a lot more processing power to take video at a ...
user avatar
  • 490
15 votes

Why do different smartphones with the same megapixel camera resolutions have different quality of image?

There are a lot more to image quality than resolution (i.e. number of megapixel). First of the light from the subject has to be gathered to the image sensor. This is done by one or several optical ...
user avatar
  • 8,138
15 votes
Accepted

Continue taking photos from smartphone or buy a camera to practice?

You should shoot with your phone - best way to get better is to shoot more, which is great if you already enjoy it. But you should get a dedicated camera if you're interested. They work differently ...
user avatar
  • 533
13 votes

Can smartphones with the same camera sensor have different image quality?

Note: This is a simplified answer. It does not go into detail, and therefore, please do not take it as authoritative answer on specifics about the exact processes that take place inside a digital ...
user avatar
  • 6,307
12 votes
Accepted

Why the faces in the corner tends to skew a bit in almost all smartphone cameras

I initially assumed that the reason to the skew faces was a result of curvilinear properties of the lens, but JohannesD pointed out in the comments that it could be due to rectilinearity itself since ...
user avatar
  • 8,138
11 votes

Can smartphones with the same camera sensor have different image quality?

To take a digital picture you need: Optics Sensor Image processing (CPU and algorithms) As you see, sensor is just a one link in a chain, and the chain is as weak as it's weakest link. Currently, we ...
user avatar
  • 2,040
11 votes

How to estimate pixels per degree for an image from a camera phone using EXIF data?

I assume this is a still frame from a video, because 16:9 is a common video ratio. In order to maintain constant frame size, "digital zooming" needs to be reinterpolated. Thus, yes, you need to ...
user avatar
  • 31k
10 votes

Why do different smartphones with the same megapixel camera resolutions have different quality of image?

Megapixels just tell you one thing: the number of individual tiny detectors on the sensor. They do not tell you anything about: the size of the sensor overall the sensitivity and size of each sensor ...
user avatar
  • 140k
9 votes

Can I change the camera aperture value on my Honor 8 phone?

Camera phones don't have variable apertures (apart from a handful exceptions) because they are not designed like full sized cameras. Owing to their tiny size, decreasing thickness of phones in general ...
user avatar
8 votes
Accepted

How well do smart phone light meter apps work?

Disclosure: I'm the guy behind Cine Meter and Cine Meter II, so take what I say with a grain of salt, grin. Do these apps really work, or are they gimmicks? They really work, within the limits of ...
user avatar
  • 196
8 votes
Accepted

Why are there black dots on all photos taken with Sony phone?

It's highly unlikely that this many pixels on the sensor would become "dead" in quick succession, or in this pattern (groups of pixels, rather than individual pixels). This is clearly dust directly ...
user avatar
  • 1,057
8 votes

Why are there black dots on all photos taken with Sony phone?

Looks really bad. Normally, dust gets on top of the stack of optical filter which sits above the sensor. It then shows as small blurry disks which get smaller and darker at narrow apertures because ...
user avatar
  • 101k
8 votes

Why does it seem like large sensors are necessary for good low-light performance?

Why does it seem like large sensors are necessary for good low-light performance? Because for the same amount of light passing through a lens a larger sensor will collect more of it. Your tire size ...
user avatar
  • 167k
7 votes
Accepted

How would a mobile phone with external zoom lens compare vs DSLR?

The QX10 and QX100 aren't actually lenses for your phone, they are a miniature point and shoot camera that uses your phone for control and display of the images. (Think of it kind of like a remote ...
user avatar
  • 34.4k
7 votes

What is the focal length on your typical cell phone camera?

Focal length does not change with sensor sizes - what actually changes is the field of view: FOV [°] = 2 * arctan ( d [mm] / (2 * f [mm]) ) FOV is our field of view in degrees, d is one of the ...
user avatar
  • 6,307
7 votes

How do I make a perfect photosphere?

What you're running into, in terms of the places where the photos don't join up seamlessly, could be one of two issues. It could be that you missed covering that part of the scene (blank screen; no ...
user avatar
  • 49k
7 votes

Continue taking photos from smartphone or buy a camera to practice?

Although a "system camera" (an interchangeable lens camera made to work within a certain system of lenses and other accessories) captures way better pictures than a phone, still the art of photography ...
user avatar
7 votes

What hardware specifications make a great phone camera?

With phone cameras it is as much about the computational things done to it after the raw data is collected from the sensor as it is about the hardware specs. You can certainly use hardware bad enough ...
user avatar
  • 167k
6 votes

Continue taking photos from smartphone or buy a camera to practice?

I would like to know whether it's OK to practice photography with phone's camera until I buy a camera or buy a camera and go ahead? Of course it is. No photographer can take photographs without a ...
user avatar
  • 49k
6 votes

Can smartphones with the same camera sensor have different image quality?

Probably the same image quality, but not necessarily. It's not only the sensor that takes the picture. It's also the lens. The sensor doesn't have an integral lens, it's the camera manufacturer that ...
user avatar
  • 6,032
5 votes

Why do camera phones have lenses of inferior quality?

The lenses in mobile phones are typically made from molded plastic elements rather than ground glass elements, and these are in optically inferior to glass in general (higher dispersion, lower ...
user avatar
  • 117k
5 votes

What are the advantages and disadvantages of compact cameras vs phone cameras?

To answer question 1, a large difference between phone and compact cameras is the lens. Phones typically have simple lenses with few elements which are designed to fit flush with the phone's body. ...
user avatar
  • 321
5 votes

What are the advantages of a low-cost compact camera vs. a high-end smartphone for photography?

Here are just some examples. Low light photography You say that your main concern is low light photography. This is actually an area which will show a significant difference. On a continuum ...
user avatar
  • 13.2k
5 votes

Are there particular limits to camera phone print size, beyond general rules of thumb?

Apple made billboard advertisements using iPhone images. Even for phones with a mere 8 mp, I'd expect lens sharpness to be the limiting factor. You'll have to photograph a resolution chart with your ...
user avatar
  • 26.2k
4 votes

How to set shutter time on an Android phone?

The properties of phone cameras vary a lot. With some you can set certain values, with others you can't and just shoot in an "auto" mode. Just the pixel count and the operating system aren't enough to ...
user avatar
  • 371
4 votes
Accepted

How do add-on lenses for smartphones work?

The correct name for these add-on devices is “supplemental lens”. We can fit supplemental lens to most any camera. For the phone camera or any camera, they work in exactly the same way as eyeglasses. ...
user avatar
4 votes
Accepted

How to remove scratches from LG mobile camera lens (with coating)?

From your photo it looks like someone added a plastic protection cover over the lens. Whether it was supposed to be temporary or permanent, I would just remove it, as it now yellowed and cracked. Just ...
user avatar
  • 11.4k

Only top scored, non community-wiki answers of a minimum length are eligible