Nikon Z TC-1.4x Review – The Cheapest Reach You Can Buy

I’ve been a Nikon shooter since 2009 — a D90 that taught me photography, a D750 that taught me full-frame — and when I moved fully to the Z system in December 2020 (keeping the D750 as a backup and picking up a D500 for birding the same month), the Nikon Z TC-1.4x went into the bag alongside the bodies and the big glass. It has been there ever since. It’s the smallest, cheapest, least glamorous thing in my kit, and pound for pound it might be the highest-value purchase I’ve made for wildlife.

Ad

Nikon Z TC-1.4x Teleconverter (opens in a new tab)

The 220g glass multiplier that turns a compatible S-line telephoto into 1.4x more reach — autofocus and weather sealing intact, for a fraction of the cost of a longer lens.

Here’s the verdict up front, because this one’s simple: if you own a compatible S-line telephoto and you shoot wildlife or birds, the TC-1.4x is a no-brainer. It costs about as much as a decent memory card, weighs less than a cup of coffee, and buys you 40% more reach without you having to carry, fund, or justify a second lens. It is not free — you pay one stop of light and a sliver of sharpness — but the trade is so lopsided in your favour that I rate it a 10/10 for exactly what it’s designed to do. Let me explain the maths, the limits, and when to leave it in the bag.

This is not a spec sheet — Nikon publishes a better one than I can. This is what it’s actually like to live with a teleconverter as a dad whose photography is mostly backyard birds, the occasional reserve morning, and family life in between. The thread is simple: it punches enormously above its size and price.

The Reach Maths: What 1.4x Actually Buys You

A teleconverter is a small group of glass elements that sits between the camera body and the lens and magnifies the image the lens projects. The TC-1.4x magnifies by a factor of 1.4 — so you multiply the focal length by 1.4 and divide the maximum aperture’s light-gathering by the same, which works out to one stop lost.

In real numbers, on my kit:

• The Nikon Z 70-200mm f/2.8 S becomes a 98-280mm f/4. That’s the transformation I use most: my fast portrait-and-sport telephoto turns into a genuine short wildlife lens that still opens to f/4 — bright enough to keep shutter speeds sensible and backgrounds soft.
• The Nikon Z 100-400mm f/4.5-5.6 S becomes roughly a 140-560mm f/6.3-8. That’s the combination that turns a versatile, carry-anywhere wildlife zoom into something with the reach to pull a heron out of the far bank.

The whole point is that you get this second focal range without buying, carrying, or insuring a second lens. A 280mm f/4 and a 560mm reach lens, conjured out of 220g of glass you can slip into a jacket pocket. For a dad who’s already negotiating how much camera gear is “reasonable” to lug to a nature reserve with kids in tow, that compactness is not a footnote — it’s half the value.

Where It Earns Its Keep: Wildlife and Birding

Wildlife is where the TC-1.4x stops being a clever accessory and becomes a problem-solver. The birds are never as close as you want. The deer always clocks you at exactly the distance where 200mm makes it a smudge. You can either spend years and thousands of euros chasing reach with longer glass, or you can clip a converter on and close 40% of the gap instantly.

On the 70-200mm, the TC has saved more family-walk wildlife shots than I can count — a kingfisher on a post across the pond, a buzzard on a fencepost at the edge of a field, a fox at the bottom of the garden at dusk. Without the converter, those are anonymous specks I’d crop into oblivion. With it, at 280mm f/4, they’re frames worth keeping. The 70-200 is a sharp enough lens that the TC’s small quality cost simply doesn’t show up in a shared photo.

On the 100-400mm, the maths gets even more interesting. At 560mm, you’re into proper birding territory — and on a DX-crop body like the Z50 II, that 560mm behaves like an 840mm-equivalent field of view. That is a staggering amount of reach from a lens-plus-converter combination that still fits in a normal camera bag. I’d never tell anyone the result rivals a dedicated super-telephoto prime, but for the price difference — we’re talking a converter versus a five-figure lens — the gap is astonishingly small in good light.

Ad

Nikon Z 70-200mm f/2.8 VR S (opens in a new tab)

The TC-1.4x's natural partner — becomes a 98-280mm f/4 with the converter fitted, the do-everything telephoto for portraits, sport, and closer wildlife.

The Honest Cost: One Stop, and What It Takes With It

I promised honesty, so here’s the part the marketing pages skip. The one stop of light you lose is not abstract — it changes how the rig behaves.

First, autofocus works harder. With less light reaching the sensor, the AF system has less to work with, so in dim conditions it hunts a touch more and locks a touch slower. In bright daylight on a sharp S-line lens, you won’t notice. At dawn under heavy cloud — exactly when wildlife is most active — you will. The converter is, fundamentally, a good-light specialist. Plan your reach-hungry shoots for when the sun is up, and you’ll rarely be disappointed.

Second, you lose a sliver of sharpness and contrast. Any extra glass in the optical path costs something; that’s physics, not a defect. But the loss with the TC-1.4x is genuinely small — visible if you pixel-peep at 100% next to a non-converted file, almost invisible in a finished image you’d actually share or print. The 1.4x is the converter to buy precisely because its image-quality penalty is so mild. (The 2x sibling is a different conversation — more on that below.)

Third, it only fits what it’s designed to fit. This is the compatibility reality, and it matters: you cannot slap the TC-1.4x on every lens you own. It pairs with the S-line telephotos — the 70-200mm f/2.8, the 100-400mm, and the big super-tele primes. It will not fit a 24-70mm standard zoom, a wide-angle, or a compact prime, and it shouldn’t — there’s no reach to multiply and the optics aren’t designed for it. Always check Nikon’s official compatibility list against your exact lens before you buy.

A Word on the 180-600mm — Be Accurate Here

Because I shoot the Nikon Z 180-600mm for birding, I get asked constantly whether the TC-1.4x will stretch it past 600mm. Here’s the careful, accurate answer: Nikon does not officially list the 180-600mm as teleconverter-compatible. So I would not buy the TC-1.4x specifically to put it on the 180-600mm, and I won’t pretend it’s a supported, guaranteed combination — that’s exactly the kind of half-true claim this blog refuses to make.

If you want reach beyond the 180-600mm’s 600mm, the supported routes are a DX-crop body (the Z50 II turns 600mm into a 900mm-equivalent field of view for free) or cropping the file in post on a high-resolution body. The TC-1.4x’s officially-supported natural partners remain the 70-200mm f/2.8 and the 100-400mm — treat those as the lenses you buy the converter for. For the full birding kit picture, our Nikon Z birding setup guide lays out which body and lens combination does what.

Weather Sealing and Build: Made to Live in the Bag

A teleconverter spends its life either clipped into the optical chain in the rain and dust of the field, or rattling loose in a camera bag. Nikon built the TC-1.4x for both. The mount is magnesium alloy, the seals are proper weather seals, and once it’s fitted between a sealed body and a sealed S-line lens, the whole rig stays as weatherproof as it was without the converter. I’ve shot it in drizzle on a reserve boardwalk and in cold, damp dawn light without a second thought.

The front and rear caps are the usual Nikon items, and the protruding front element means you treat it with a little care when it’s off the lens — it’s not a lens cap you want to lose. But in normal use it’s a fit-and-forget component. It clips on with the same bayonet action as a lens, the camera recognises it instantly and reports the corrected focal length and aperture in the EXIF, and there’s nothing to configure. For a dad who’d rather spend the dawn watching for the bird than fiddling with menus, that simplicity is exactly right.

Ad

Nikon Z 100-400mm f/4.5-5.6 VR S (opens in a new tab)

The other ideal match — the TC-1.4x stretches it to 140-560mm, turning a versatile wildlife zoom into serious birding reach without buying a longer lens.

TC-1.4x vs TC-2.0x vs Just Cropping the Z8

The real decision isn’t usually “should I buy a teleconverter” — it’s “which way do I add reach.” There are three honest options, and they trade off differently.

The TC-2.0x doubles your focal length, which is tempting — a 70-200 becomes a 140-400, a 100-400 becomes a 200-800. But you pay two stops of light and a more visible softening, and the autofocus needs genuinely good light to behave. It’s the right tool when you truly need maximum reach and the sun is cooperating; the rest of the time, the 1.4x is the smarter, more forgiving choice.

Cropping the Z8’s 45.7MP file is the option people forget. It costs nothing and loses no light — but it throws away resolution. A hard crop of a 600mm frame might leave you a 20MP file, which is plenty for sharing and most prints. So the honest rule I follow: on the high-resolution Z8, I’ll often just crop in post and keep my full stop of light, especially in dim conditions. On a lower-resolution body, or when I want the full pixel count to print big, the TC-1.4x earns its place by filling the frame optically instead of in software. They’re not rivals so much as two tools for the same job — and the beauty is the TC costs so little that owning it alongside the crop option is no real decision at all.

Long-Term Reality: Four Years In

The TC-1.4x has been in my kit since December 2020, through the move from the Z5 and Z50 era to the Z8 and Z50 II I shoot now. In all that time it has needed exactly nothing from me — no firmware drama, no mount wear, no degradation. It’s the rare piece of gear you buy once and simply forget about, in the best way, until the moment a bird lands just out of reach and you’re glad it’s there.

If I’m nitpicking: I wish the front element were a touch less exposed when it’s off the lens, and on the 100-400 at full reach with the TC, the f/8 maximum aperture does make me think harder about light. But these are the mild grumbles of a component that has earned its spot in the bag for five years and counting. For its purpose — cheap, light, supported extra reach for the right lenses — it does the job perfectly.

What does the Nikon Z TC-1.4x actually do?

It multiplies the focal length of a compatible lens by 1.4x while costing you one stop of light. A 70-200mm f/2.8 becomes a 98-280mm f/4, and a 100-400mm becomes a roughly 140-560mm. It sits between the camera body and the lens, autofocus continues to work, and the weather sealing stays intact. It’s the cheapest way to add real reach to glass you already own.

Which Nikon Z lenses are compatible with the TC-1.4x?

The teleconverters are designed for the S-line telephotos — most relevantly the Z 70-200mm f/2.8 S and the Z 100-400mm f/4.5-5.6 S, plus the super-telephoto primes like the 400mm f/2.8 and 600mm f/4. They do not fit standard zooms like the 24-70mm. Always check Nikon’s official compatibility list for your exact lens before buying — it is not universal.

Is the Nikon Z TC-1.4x compatible with the 180-600mm?

Nikon does not officially list the Z 180-600mm f/5.6-6.3 as teleconverter-compatible, so I would not buy the TC-1.4x specifically to use on the 180-600mm. For guaranteed, fully supported results, treat the 70-200mm f/2.8 and the 100-400mm as the natural partners. If you want reach beyond 600mm, lean on a DX-crop body or cropping in post instead.

How much image quality do you lose with the TC-1.4x?

Less than you’d fear. You lose one stop of light, which can slow autofocus in dim conditions, and there’s a slight dip in sharpness and contrast — visible at 100% pixel-peeping, rarely visible in a finished, shared image. On a sharp S-line lens in good light, the results are excellent. In low light it’s a different story, because the lost stop pushes ISO up and AF works harder.

Should I buy the TC-1.4x or just crop the Z8's 45MP file?

Both are valid, and they solve different problems. Cropping the Z8’s 45.7MP sensor costs you nothing extra and no light, but it throws away resolution. The TC-1.4x keeps full resolution and genuinely fills the frame, at the cost of one stop of light. On a high-resolution body, cropping is often enough; on a lower-resolution body, or when you want the full file, the TC wins. I keep both options open.