Quick answer
If you want modern features like Wi-Fi, better low-light performance, and a more responsive autofocus system, go with the used Nikon D5600. If you're on a tight budget and just need a basic DSLR to learn on, the used Nikon D3100 is a capable starting point.
Why the D5600 is a bigger step up than the numbers suggest
The Nikon D5600 was released years after the D3100, and the jump in technology is substantial. The D5600 uses a 24.2MP DX-format CMOS sensor with an EXPEED 4 processor, while the D3100 uses a 14.2MP sensor with an older EXPEED 2 processor. This means the D5600 captures more detail and performs much better in low light, with an ISO range up to 25600 versus the D3100's 3200 (expandable to 12800).
The D5600 also has a larger 3.2-inch vari-angle touchscreen, built-in Wi-Fi and Bluetooth for easy image sharing, and a faster 5 fps continuous shooting rate. The D3100 lacks a touchscreen, Wi-Fi, and shoots at only 3 fps. If you plan to share photos quickly or shoot moving subjects, the D5600's advantages are clear.
Where the D3100 still makes sense
The D3100 is much cheaper, often available for under $200 used. It's a simple, lightweight camera that still takes good photos in good light. Its 11-point autofocus system is basic but reliable for static subjects. For someone who just wants to learn the basics of aperture, shutter speed, and ISO without spending much, the D3100 is a fine entry point.
However, the D3100 lacks an internal focus motor, so it cannot autofocus with older AF lenses. It also has no video autofocus during live view, which makes video recording clunky. If you think you might want to explore video or use older Nikkor lenses, the D5600 is a better long-term investment.
D5600 vs D3100: trade-offs at a glance
- Image quality & low light: The D5600's 24.2MP sensor and wider ISO range produce cleaner, sharper images in dim conditions. The D3100's 14.2MP sensor is fine in good light but shows noise sooner.
- Connectivity & sharing: The D5600 has built-in Wi-Fi and Bluetooth for instant photo transfer to your phone. The D3100 has no wireless connectivity; you'll need a card reader or USB cable.
- Ease of use for beginners: The D5600's vari-angle touchscreen and Guide mode make it easier to learn exposure settings. The D3100's simpler interface is straightforward but lacks touch control and live-view video autofocus. If you're new to photography and want to grow into the camera, the D5600 is more forgiving.
- Budget: A used D3100 body can be found for $150–$250, while a used D5600 with kit lens typically costs $500–$700. The D3100 saves you money upfront but limits future capabilities. The D3100 is a solid starter if you only have a small budget and aren't sure photography is for you.
Key product differences at a glance
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Nikon D5600 with lens 18-55mm (pre-owned): The Nikon D5600 features a 24.2MP DX-format CMOS sensor and EXPEED 4 image processor, with an ISO range of 100–25600. This gives you higher resolution images and better low-light performance, making it suitable for indoor events, portraits, and travel photography.
Nikon D5600 with lens 18-55mm (pre-owned)
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D3100 Nikon viewfinder for sale: The Nikon D3100 Viewfinder is an essential accessory for precise framing and focus, especially in bright outdoor conditions. While the D3100 lacks a touchscreen, the optical viewfinder remains a reliable way to compose shots and conserve battery life.
D3100 Nikon viewfinder for sale
Which used Nikon should you buy?
Best for
- Hobbyists or aspiring photographers who want modern features, better low-light performance, and wireless sharing.
- Anyone who plans to shoot video or use older AF lenses (the D5600 has a built-in focus motor).
Not ideal for
- Budget buyers who just need a basic camera to learn on and don't mind older technology.
- Users who only shoot in good light and don't need Wi-Fi or a touchscreen.
