Register
Notebookcheck

Autor Thema: 3x optical zoom for the Galaxy S20 and S20+? Not quite  (Gelesen 159 mal)

Redaktion

  • Editor
  • High End NB
  • ****
  • Beiträge: 63592
  • Karma: +36/-3
3x optical zoom for the Galaxy S20 and S20+? Not quite
« am: Februar 14, 2020, 07:07:59 »
The Galaxy S20 and S20+ both have 3x optical zoom, right? Well, not quite. A quick look at the phones' official technical specs reveals that they likely offer just 2.5x optical zoom, with some image cropping done to reach the 3x lossless mark.

https://www.notebookcheck.net/3x-optical-zoom-for-the-Galaxy-S20-and-S20-Not-quite.453855.0.html

Anonymous

  • Gast
Re: 3x optical zoom for the Galaxy S20 and S20+? Not quite
« Antwort #1 am: Februar 14, 2020, 10:34:21 »
NO, it is NOT 2.5X optical zoom. Both S20 and S20+ have ONLY 1.05X optical zoom, and the rest is purely digital. Here is how it works.

If you look at the official spec sheet you see they have a 64MP telephoto lens with 76 degrees of FoV. This roughly translates into 28mm equivalent FL, which in turn shows this 'telephoto' camera features a WIDE ANGLE LENS, just a bit narrower than the main camera's.

What does this indicate? Basically, S20 and S20+ have two main cameras with different resolution, and switch to the higher resolution 64MP camera from the regular 12MP camera when a user starts zooming in. This is NOT how optical zoom is supposed to work on a phone.

What a disappointing advertising strategy from Samsung, I can easily imagine average consumer falling into their misleading descriptions. I'm not impressed.

Avi

  • Gast
Re: 3x optical zoom for the Galaxy S20 and S20+? Not quite
« Antwort #2 am: Februar 14, 2020, 10:36:08 »
The S20 has no optical zoom. The lens on the “telephoto” camera has same field of view as the main camera. It achieves ~2.5 “zoom” by heavily cropping the sensor.
So you essentially get a 12mp image that was heavily cropped from the 64mp sensor. The sensor doesn’t use Pixel Binning in this mode as it needs all pixels to produce a 12mp crop, so you get effectively a tiny sensor and tiny pixels.

 

 
C 2018 » Impressum     Sprachen: Deutsch | English | Español | Français | Italiano | Nederlands | Polski | Português | Русский | Türkçe | Svenska