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Choosing a second lens

A second lens after the kit: five bright primes

A kit zoom is a fine start, but it is slow at the long end. A bright prime is the classic second lens: it gathers far more light, blurs the background and costs less than a better zoom. These five come from our reviews, chosen to cover the main mounts, with prices read on Amazon.com on November 2, 2026.

By

Five picks, three mounts

For Sony E: the TTArtisan AF 50mm F1.8, about $89, the Sigma 16mm F1.4, about $414, and the Samyang AF 75mm F1.8, about $314. For Canon RF: the RF 45mm F1.2 STM, about $429. For Nikon F DSLRs: the AF-S 50mm f/1.8G, about $167.

Why bright matters

Each full stop doubles the light. A kit zoom at f/5.6 against a prime at f/1.8 is a difference of more than three stops: a much faster shutter speed or a much lower ISO in the same light.

Read both apertures on a zoom

A zoom marked f/3.5-6.3 is f/3.5 at the wide end and f/6.3 at the long end. The second figure decides what it can do as light fades.

Manual or autofocus

All five autofocus. The TTArtisan has no focus ring, so it cannot be focused by hand.

How we chose

Each pick is a lens we review, on sale on Amazon.com when read.

Which one belongs in your bag?

You shoot indoors
The stated maximum aperture does more than the focal length.
You often frame too wide
A telephoto is what you need, not a bigger sensor.
You photograph objects
The stated reproduction ratio becomes the only criterion that counts.
You travel light
Weight and focal range outrank aperture.

Picking by what you shoot

Portraits

A fast prime changes the image more than a newer body does.

Landscape

The wide angle changes the frame, and aperture counts for far less there.

Sport and wildlife

The long focal length decides, and weight is what limits in practice.

What matters once you are shooting

The published mount
It rules out everything that will not fit. It is the first filter, never the last.
The stated maximum aperture
It describes what the lens passes at best, and weighs on the weight as much as on the price.
The published focal length
It decides the frame. No body setting replaces it.

Which figure for which picture

What is missingWhat you look atWhat does not replace it
LightMaximum apertureRaising the sensitivity
FramingFocal lengthCropping
ReachA long focal lengthDigital zoom
Close detailReproduction ratioAn improvised close-up lens

Where photographers go wrong

Buying a duplicate of the kit
A lens covering the same range adds nothing. The second lens is chosen on what is missing.
Overlooking weight
A heavy lens stays at home, and a lens that stays at home is useless.
Confusing stabilization with shutter speed
Stated stabilization is a maker’s measurement under its own protocol. It does not freeze a moving subject.

By the photographer you are

The portraitist
Goes for a fast prime and accepts moving their feet.
The hiker
Favors a wide, light range even at the cost of aperture.
The object photographer
Looks only at the stated reproduction ratio and minimum distance.

Shutter life, care and how long it holds value

A lens ages through its rings and its front element. Dust settles in a zoom ring and makes it gritty, and a scratched front element does not get repaired.

  • Keep a filter or a hood on rather than cleaning often.
  • Clean from center to edge, with what the maker recommends.
  • Avoid abrupt temperature changes that condense inside.
  • Store with caps on; most scratches happen in the bag.

Safety

This site publishes stated specifications and dismantles no lens.

  • Dismantling a lens is a workshop matter, not a tutorial.
  • Stated weather sealing describes precise test conditions.
  • Do not point a telephoto at the sun, even without looking through it.
  • Mount adapters sometimes change the stated behavior.

Prices quoted in this text were read on November 2, 2026. The live price is at the top of the page.

What goes in the bag, and why

  1. Prime lenses

    TTARTISAN AF 50mm F1.8 Neo (FE)

    Sony E, full frame · 50mm · f/1.8 · STM autofocus with eye AF · no focus ring · 156 g (5.5 oz) · glass-fiber composite body · 0.48 m close focus · 45° view

    An $89 autofocus 50 mm f/1.8 for Sony full frame, at 156 grams, with no focus ring at all. Sold by TTArtisan, with 15 ratings so far.

    Best for: Beginners on Sony full frame who want a cheap, light, bright lens.

    7.6/10

    ≈ $89

    Check price on Amazon Read the review: TTARTISAN AF 50mm F1.8 Neo (FE)
  5. Prime lenses

    Samyang AF 75mm F1.8 FE

    Sony E, full frame · 75mm · f/1.8 · 9 blades · linear STM AF · Custom Switch for aperture via the focus ring · 10 elements in 9 groups · 58mm filter · 8.1 oz (230 g)

    A light 75 mm f/1.8 portrait lens for Sony full frame and APS-C, with a nine-blade aperture and a video-friendly Custom Switch, sold by Amazon.com for about $314.

    Best for: Sony owners who want a light portrait lens for weddings, street and video.

    8.1/10

    ≈ $314

    Check price on Amazon Read the review: Samyang AF 75mm F1.8 FE

What people ask before they commit

Prime or zoom for a second lens?

A prime is usually the better second lens: at f/1.2 to f/1.8 it gathers several times the light of a kit zoom at f/5.6, which matters indoors and at night.

Which focal length?

Around 50 mm equivalent for everyday photos, 75 to 85 mm for portraits, and wider for rooms and landscapes. An equivalent focal length is a calculation that describes the field of view on full frame.

Will it fit my camera?

Check the mount on each review: Sony E, Canon RF and Nikon F lenses do not interchange without adapters.

Each body, and the pictures it was chosen for

What each band of spending frames

Entry level

$89 – $167

4 models

Mid range

$169 – $429

5 models

Upper range

$498 – $820

4 models

The one-frame answer

How this list was put in order

The bodies and lenses above come from the catalog of this site. Specifications come from the maker and from the Amazon listing; prices are what Keepa reported on the date below, and both move. The order uses declared specifications, the balance of stated strengths and stated limits, and price. Nothing here has been shot with by us, and the page does not pretend otherwise.

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