Mirrorless bodies from 2018 to 2020 are the sweet spot of the used market. They have the sensors and
eye autofocus that made this generation a real jump, and enough successors have shipped since that
their prices have dropped hard. All five here make files most photographers would be happy with. The
order is about everything around the files: grips, batteries, card slots, and how much damage a
previous owner could have done.
Scores use the tech axes, adjusted for used gear as described on
how we rank. Value is judged against what each body costs used now, not its launch price.
Ask for the shutter count before the photos
The shutter count is a camera’s odometer, and on these bodies it decides more than cosmetics do.
Nikon writes the count into the metadata of every JPEG, so a full-size, unedited file from the seller
is enough to read it with a free online reader. Sony and Canon are less consistent. Readers handle some
models and not others, and some sellers end up using desktop software over USB. Fujifilm varies by
model as well. If a seller can’t or won’t produce a number, assume it’s high.
Many of these bodies spent years at weddings and events. A count in six figures isn’t disqualifying, but
it should show up in the price.
While you’re asking, request two more photos: the sensor with the lens off, and the mount up close.
Bent contacts and a chewed mount ring point to a drop or a lot of hurried lens swaps.
How eBay listings hide the problems
“For parts or not working” is a condition eBay defines, and a body listed that way is sold as broken.
“Untested” and “as-is” in a title are softer, but buyer consensus treats them the same way:
either it was tried and failed, or the seller wants no returns.
eBay’s Money Back Guarantee covers a camera that arrives broken when the listing said it worked. It
doesn’t cover a working camera you simply don’t like, unless the seller accepts returns. Test both
card slots, stabilization, the viewfinder, and every button the day it arrives.
A lot of the cleanest-looking listings ship from Japan. Buyers who use them a lot say the grading runs
generous: a “Mint” or “Near Mint” body often has wear the word doesn’t suggest. Go by the photos and the
written flaws list, not the grade, and check who pays return shipping across the Pacific.
Search terms that cut the list down
Every model search mixes in batteries, grips, and broken units. A few habits help:
- Add body only to skip kits you don’t want, or w/ 24-70 or the lens you do want.
- Add shutter count or low shutter. Sellers who know the number tend to put it in the title.
- Exclude -parts -broken -grip -cage to drop the noise.
- Filter to Used, Returns accepted, and your own country if you’d rather not deal with import fees.
How the five separate
The Z6 II wins without being the best at any single thing. It has stabilization, two card slots,
sealing, and the deepest grip, and nothing about it needs a workaround. The a7 III is the stronger value
and has the bigger lens ecosystem, but the cramped grip and dense menus cost it on usability and design.
The X-T3 places second on handling. Its dials make it the camera people describe enjoying rather than
merely using, and its 10-bit video is the best here. No in-body stabilization keeps it from first.
The EOS RP and a6400 share a weakness: small batteries. The RP makes sense for Canon owners with EF
lenses. The a6400 makes sense for moving subjects at the lowest cost on this page.
Which body for which shooter
A first interchangeable-lens camera. The EOS RP has the friendliest menus and a screen that flips
forward. The a6400 is the pick if the subjects are kids or pets that won’t sit still.
Travel. The RP is the lightest full-frame body here. The a6400 is smaller still, and its lenses are too.
Video. The X-T3’s 10-bit 4K is the strongest file here. The Z6 II adds stabilization, which matters
more if you film handheld.
Adapting old lenses. Any of them work, but the full-frame three keep a 50mm looking like a 50mm.
Pick up a lens from a 35mm film SLR and you’ll find plenty of cheap ones.
What none of them do
None has the animal and vehicle detection that newer bodies offer. None comes with a warranty unless
the seller adds one, and firmware updates have stopped or nearly stopped on all five. For people,
landscapes, and travel, that rarely matters. Video in particular fills cards quickly, so a fast
portable SSD makes offloading on the road less of a chore.
Questions people ask
- What is a high shutter count on a used mirrorless camera?
- Repair shops and owner trackers tend to treat 150,000 to 200,000 actuations as the expected life of an enthusiast body, though only some models carry a published rating and plenty of copies run past it. Under 20,000 is light use. Around 50,000 is an ordinary hobbyist camera. Past 100,000, compare the asking price with what a local shop quotes for a shutter replacement before you bid.
- Can I use old film-camera lenses on these bodies?
- Yes, with an inexpensive adapter, and it is one of the better reasons to buy mirrorless. Nikon F, Canon FD, Olympus OM, and Minolta MD lenses all adapt to Sony E, Nikon Z, Canon RF, and Fujifilm X. Focus is manual and the aperture is set on the lens ring, but every body here has focus peaking and magnification to help. On the two APS-C bodies, a 50mm frames like a 75mm.
- Do I need CFexpress cards for the Z6 II?
- No. The two slots work independently, so the camera shoots happily with only an SD card in the second slot. What you give up is buffer depth during long bursts, since the CFexpress or XQD slot clears faster. For portraits, travel, and landscapes the SD slot alone is fine. Add a CFexpress card later if you start shooting sport or want the backup copy.
- How do I tell sensor dust from a sensor scratch in listing photos?
- Ask for a photo of a plain sky or white wall at f/16, plus a direct photo of the sensor with the lens off. Dust shows as soft gray blobs that move or vanish after a blower or a cleaning. A scratch is a sharp line that stays in the same place in every frame and survives cleaning. Scratches on the sensor's filter stack are a repair-shop job, so price them as one.
- Should I buy a body only or a kit with a lens?
- Body-only listings are usually the better buy when you already know the lens you want, because kit zooms add little resale value. A kit makes sense for a first camera. In that case check exactly which lens it is: Sony's 16-50mm and Canon's RF 24-105mm f/4-7.1 are far less capable than the bodies they come with.