Lossless Zoom Camera: Facts, Benefits And How It Works

Lossless Zoom Camera on Phones

We are in an age of fast developing technology, so it is important for developers to sort out new ideas to remain relevant in the world of technology. Behind the scene, a lot of what if’s has played vital roles in compiling amazing ideas that was resonated into reality.

In a bid to make life easier and also remain relevant in the world of mobile phone technology, mobile phone manufacturers have asked a fair share of what if’s.

This manufacturers might have asked themselves questions like, what if we added more pixel?

What if we made the screen bigger?

What if we made a proper zoom on phones?

These are few possible questions that brought about many amazing innovations on smartphone devices.

Smartphones are usually built with cameras that fit user’s needs, these phone cameras can perform many task and allows users have thrilling experience while shooting. However, the ability of a phone’s camera to perform more tasks may depend on some inbuilt software, camera lens, the price range of the phone etc.

Most phones have that ability of shooting image that are far away, but the problem with this is that when you zoom in into this picture it might appear blur which will alter the details of the image.

Because of this, users play safe by standing not so far from the phone so as to get a clear shot.

Image Quality

There is good news! With the lossless zoom, shooting experience is seamless plus you can now shoot far distance shoot with having to fret about the possible of losing some details in your shoot.

The lossless zoom made its debut with the release of Nokia lumia 1020 and Sony xperia Z1 and Z1 compact.  These smartphone came with giant sensors that rely on large resolution which aids the lossless zoom.

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The context lossless is usually used for data manipulation where output and input data is same at both ends. For instance, when you set your image storage in JPG and set it at super high instead of super fine probably because you want to save space, this is called lossy.

Basically, this means that you have actually sacrificed some data in order to save space. Now when you save raw image in PNG format, there will be no loss in quality when you decide to convert the PNG image back to raw image, this is lossless.

In the same way, this also applies in the Nokia lumia zooming capability, simply put, you don’t have to sacrifice the quality if your image when zooming.

lossless zoom

The lossless zoom simply allows users zoom in photos that were taken from a far without losing any detail from the scene.

The logic behind this is the use of many pixels (high resolution) in cameras, when you snap a picture and zoom it, the pixel will still be enough to project a clear detailed picture even after been cropped.

Resolution is important for shooting clear image, and this must be why the nokia 808 pureview is considered one of the best devices with good camera today.

By the way, 808 Pureview bags an amazing 41-megapixel sensor that can create fabulous photos; it is obvious that the 808 Pureview is the god father of the Lumia 1020.

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Lumia 1020 can zoom x3 without any significant loss in clarity, the further you zoom in, the lesser the available pixel.

When you reach the zero point which is x6 zoom in 720p, the photo still appears clear but will experience insignificant loss in clarity.

At the zero point, no further lossless zooming can be done because the level of zoom has gone beyond the capabilities of the sensor and going further will cause significant loss in detail.

While Nokia Lumia 1020 can shoot 5 million megapixels, the Sony Xperia Z1 can shoot 8-megapixel which is capable of zooming up to 1.8 times without significant loss in clarity.

This is good but not so impressive when compared to the zooming capacity of the Lumia 1020.

Facts about digital lossless zoom

Earlier I mentioned that the release of Nokia lumia 1020 brought into light the lossless zooming, but to be frank the concept is not all that new. In the past, smartphones like Nokia lumia 808 pureview which is a predecessor of the lumia 1020 and olympus cameras could also carry out this task without losing clarity in photo. Most companies refers to this zooming technology with the term digital lossless zooming while Nokia prefer to call theirs high resolution x3 zoom.

What is the benefit Of Lossless Camera Zoom ?

Many users might find this irrelevant, but looking at it closing it actually beneficial as you will not need to use mechanical lenses for zooming.

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This simply means that using a high density optical sensor that can capture high resolution photos, this will ensure the photo quality is maintained even after zooming. This technology works well with phones with smaller thickness and does not consume much power plus there are smaller chances of experience mechanical malfunctioning.

Smart or not?

Before now, it was difficult to make high density sensor that could capture up to 38 megapixel.

But now it is very possible to capture with resolution as high as that as in the case of Nokia lumia. On a norm, 5 to 8 megapixel is enough for shooting, so you can use the lossless zoom without having to use lens to magnify image while still maintaining the image quality. Now that is smart!

How Does Camera Zoom Work

Optical zoom

Optical sensor captures image at about 5 megapixels, to achieve zooming the image is increased to about 15 megapixel using interpolation.

Now when this is done with mechanical contraption of lens in front of the sensor leading to a magnified object, no interpolation is done and all the magnifications are carried out by the lenses.

This process is called optical zoom, and the lens have nearly infinite resolution. also the image quality comes out better than what a digital zoom will give.

Digital lossless zoom

The digital sensor can also shoot 5 megapixels and move it anywhere on a massive 38 megapixel and crop it.  Doing this will not alter the image quality, this simply means that the image is clear even after cropping.


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