Best prime lens for stronger background blur in full-body street portraits on a Nikon D3400
Asked 1/28/2019
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2 answers
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I shoot street photos on a Nikon D3400 with the 18-55mm kit lens. For head-and-shoulders portraits I can get some background blur, but when I frame a full-body subject from farther away, much more of the scene looks in focus.
I’m trying to understand whether this is mainly because the kit lens has a relatively small maximum aperture, and whether a faster prime would help. I’m considering lenses around 35mm or 50mm, such as a 35mm f/1.8, and I’d like to know which focal length is more practical on a crop-sensor Nikon for full-body street portraits with blurred backgrounds.
I’d also prefer something reasonably affordable, and ideally a lens choice that still makes sense if I eventually move to full frame.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
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Any 35mm or 50mm prime lens with f/1.8 or better should work. If you plan to learn to use your camera manually, you have even more options. But beware: Don't just buy a non-AF lens because you might want to have one later. Nikon 35/1.8 or 50/1.8 should be around 200€ new. Nikon 50/1.4 are about 300-400€ new. Older, used lenses should be about 100€ cheaper.
But there also 50/1.4 for 100€ (used). But be aware of the condition of the lens. I, myself, would NEVER buy a lens with fungus. I have to much fear of spreading into other lenses.
Some little scratches on cheap, used lenses are not that bad. Most tiny scratches are not visible in the final photo.
Originally by user71264. Source · Licensed CC BY-SA 4.0
user71264
7y ago
0
Generated from our catalog & community — verify before relying on it.
Yes—a faster prime can help, but background blur depends on more than just f-stop. To get more blur, the main factors are:
- wider aperture (smaller f-number, like f/1.8)
- longer focal length
- more distance between subject and background
For a Nikon D3400, a 35mm lens is usually easier to use for full-body street shots because it feels more “normal” on crop sensor. A 50mm can blur the background more if you keep the same camera-to-subject distance, but it may feel tighter and be harder to use in confined spaces.
So:
- 35mm f/1.8: more versatile, easier framing on DX
- 50mm f/1.8: stronger blur potential, but narrower view
Also, the easiest no-cost way to increase blur is to place your subject farther from the background.
If you may upgrade later, be careful: not every Nikon 35mm lens is full-frame compatible. A 50mm f/1.8 is often a safer cross-format choice. Manual-focus older lenses are also an option if you’re comfortable experimenting, but don’t buy one just because you might want manual focus someday.
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