Samsung S20 ultra comparison

Started 6 months ago | Discussions thread
Lee Jay Forum Pro • Posts: 56,114
Re: My own comparison

RDM5546 wrote:

Lee Jay wrote:

RDM5546 wrote:

The 108mp main sensor for normal 24-110mm field of view (in the 35mm equiv)

This is a misleading statement. It's a fixed focal length lens of 26mm equivalent (7mm actual - look at your own EXIF data). All the rest is done by cropping and processing of the 108MP image taken by the sensor behind that lens. If you're outputting 12MP images, the cropping reaches 1:1 at 78mm-equivalent. Beyond that, it's up-resing from the sensor.

I errored in my representation of a normal 35mm field of view being 24-110. But i find 78mm equivalent not likely right either If the12 million (4000x3000) pixels in the middle of the 108 million (12000x9000) pixel sensors are are used this would be a 3X zoom or a 72mm equivalent not 78 mm.

It starts at 26, not 24, according to Samsung.

https://www.samsung.com/global/galaxy/galaxy-s20/specs/

  • 108MP Wide-angle Camera
  • PDAF, OIS
  • Pixel size: 0.8μm (12MP 2.4μm)
  • FOV: 79˚F.No (aperture): F1.8
  • 1/1.33" image sensor size
  • FOV Rectilinear = 2*arctan(sensor size/(focal length*2))
  • solve for focal length = sensor size/2*tan(FOV/2)
  • focal length = 43.3mm/2*tan(79°/2) = 26mm

43.3mm is the 35mm diagonal.  Now, it's not precise because it's comparing two different aspect ratios, but we usually use diagonals when doing that.

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Lee Jay

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