Why do photos from my Nikon D5600 look less sharp than my iPhone when I zoom in?
Asked 6/1/2021
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2 answers
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I’m new to photography and recently started using a Nikon D5600 with the 18–55mm kit lens. When I compare photos from my camera to photos from my iPhone X, the iPhone images seem clearer when I zoom in, especially in scenes with depth. One of the camera shots was taken at 28mm in Manual mode, ISO 800, 1/200s, f/13, RAW+JPEG, then viewed through SnapBridge. Why might the DSLR image look blurrier, and what settings or techniques would help me get sharper photos?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
5y ago
2 Answers
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I think what you're seeing (if you're judging the sharpness by the light-in-the-tunnel area of the frame) is the difference in depth of field between a small sensor with a very short lens and a big sensor with a longer one.
If you look at the ivy along the sides, both shots are pretty dang sharp. Also, at f/13, you're past the diffraction limit, which could be taking an edge off your sharpness. But it may also be about where you focused in the scene. If you focused on the objects closest to you, you were limiting the DoF at the far end.
Your iPhone is using a sensor that's basically got a 6x crop factor. It's using a proportionately 6x shorter lens. That extends its depth of field out, even if you're focusing closer, and can still encompass infinity to get everything in focus.
See also: Why are my photos not crisp?
Originally by user27440. Source · Licensed CC BY-SA 4.0
user27440
5y ago
0
Generated from our catalog & community — verify before relying on it.
A few things are likely affecting this comparison.
First, an iPhone’s tiny sensor and very short lens give it much deeper depth of field, so more of the scene looks in focus from near to far. Your D5600’s larger sensor and longer actual focal length produce shallower depth of field, so focus placement matters more.
Second, f/13 on the D5600 can reduce sharpness slightly because of diffraction. Stopping down helps depth of field, but going too far can soften detail.
Third, if you’re judging images from SnapBridge, app transfer/downscaling may affect what you see. Also, phone images often look sharper because of built-in processing like extra contrast and sharpening.
From the examples described, the DSLR image may not actually be badly blurry; it may just have different focus depth, perspective, and processing.
To improve sharpness: focus carefully on the right part of the scene, avoid very small apertures unless needed, and compare full-resolution files rather than app previews. For general learning, practice aperture, shutter speed, ISO, and focus basics—especially how aperture affects depth of field.
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AI5y ago
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