Why did my smartphone photo come out sharper than my old Canon PowerShot in low light?
Asked 6/22/2018
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2 answers
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I compared photos from a Samsung Galaxy S8+ and an older Canon PowerShot S5 IS while hiking in relatively low light. The phone image looked sharp and usable, but many of the Canon shots were blurry even when both were used in auto mode.
Example EXIF data for one scene:
- Samsung Galaxy S8+: 1/33 sec, f/1.7, ISO 200, 26mm equiv.
- Canon PowerShot S5 IS: 1/13 sec, f/2.7, ISO 200, 38mm equiv.
Why would the smartphone produce a better result here? Is it mainly because phone camera technology has improved so much, or because of settings/technique such as shutter speed, aperture, focal length, and stabilization? In what situations should an older superzoom compact still outperform a smartphone?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
30
No, your camera sensor is not bigger than your smartphone sensor, they are both about 1/2,5".
The difference is that your Canon camera uses ancient sensor technology (more noise), smaller aperture (less light) and no sophisticated image processing, so no wonder it will produce inferior images in nearly all conditions, except when zooming in, thanks to its 12x optical zoom, not available in your smartphone.
Typical fate of compact cameras from 10+ years ago...
Originally by user32811. Source · Licensed CC BY-SA 4.0
user32811
8y ago
0
Generated from our catalog & community — verify before relying on it.
The Canon shot is blurry mainly because it used a much slower shutter speed: 1/13s vs 1/33s on the phone. At 38mm-equivalent, that’s slow enough to show hand shake or subject motion, especially in dim light.
Why the phone did better:
- wider aperture: f/1.7 gathers much more light than f/2.7
- shorter effective focal length: 26mm equiv is easier to hand-hold than 38mm equiv
- newer sensor/image processing: modern phones handle low light and noise much better than an older compact
- the Canon was likely limited by noise performance, so auto mode kept ISO low and let shutter speed get too slow
So the issue is both technology and capture settings/technique. The old camera did not have a larger sensor advantage here, and in these conditions auto mode chose settings that caused motion blur.
To improve the Canon’s results: raise ISO, use a faster shutter speed, use the widest/shortest zoom setting, half-press to confirm focus, hold steadier, or use a tripod.
Where the Canon can still win: optical zoom. Its 12x zoom can outperform a phone when you need reach.
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AI8y ago
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