How to Check a Used Camera Before You Buy: The Complete Inspection Checklist

Buying a used camera is one of the smartest ways to access professional-grade equipment at a fraction of its original cost. But it is also one of the few consumer purchases where the difference between a good deal and an expensive mistake can come down to a handful of things you either checked or did not. This guide gives you a systematic framework for evaluating any used camera — whether you are buying from eBay, a specialist retailer like MPB or Wex, or a private seller.

The checklist is organised in the order you should work through it: starting with the things you can verify before you even handle the camera, moving through the physical inspection, and finishing with the functional tests that confirm everything works as it should.

Step 1: Verify the Shutter Count

The shutter count is the single most important number when evaluating a used DSLR or mirrorless camera. Every time the shutter fires — whether you are taking a photo or the camera is performing a test shot — the count increments by one. Manufacturers rate shutters to a specified number of actuations, after which the mechanism may fail. Understanding where a camera sits relative to its rated lifespan tells you how much use it has left.

To check shutter count, take a test shot on the camera and upload the resulting JPEG to a free online tool such as camerashuttercount.com or myshuttercount.com. These services read the EXIF data embedded in the file, which includes the shutter actuation count for most Canon, Nikon, Sony, and Pentax bodies. Fujifilm cameras do not embed shutter count in EXIF data, so for Fujifilm you will need to use the camera's own menu (Settings → Sensor Cleaning → Shutter Count on most X-series bodies).

A camera that has fired 80% of its rated shutter life is not necessarily a bad buy — shutters often exceed their rated lifespan significantly — but it should be reflected in the price. As a rough guide, a camera at under 30% of rated life should command a small premium; one at over 70% should be priced accordingly lower.

Step 2: Inspect the Sensor

Sensor dust and sensor damage are two very different problems. Dust is almost universal on used cameras and is easily cleaned; damage — scratches, oil spots from a failed shutter, or stuck pixels — is a more serious concern.

To check for sensor issues, set the camera to aperture priority, dial in f/16 or f/22, and photograph a plain white wall or a clear sky. Open the resulting image on a computer at 100% zoom and look for dark spots, smears, or fixed bright pixels. A few dust specks are normal and can be removed by a camera shop for £30–£50. Multiple oil spots (which appear as soft-edged blobs rather than sharp specks) suggest a shutter that has been leaking lubricant — a more involved repair.

For stuck or dead pixels, photograph a completely dark scene (lens cap on, long exposure) and look for any bright spots that remain fixed regardless of the image content. One or two dead pixels in the extreme corners is generally acceptable; a cluster near the centre of the frame is not.

Step 3: Check the Body Condition

Physical condition tells you how a camera has been treated, and wear patterns can reveal things the seller has not disclosed. Work through the following checks systematically:

Rubber grip and body seals. On weather-sealed bodies (Nikon D750, Canon 5D Mark IV, Sony A7 III), check that the rubber seals around the card slot, battery door, and port covers are intact and not cracked or peeling. Cracked seals compromise weather resistance. On non-sealed bodies, check that the grip rubber is not lifting or sticky — this is a cosmetic issue but indicates heavy use.

Hot shoe and accessory ports. The hot shoe (the metal bracket on top of the camera for flash attachment) is frequently damaged by careless flash mounting. Check for bent contacts or a cracked housing. Similarly, check the USB, HDMI, and microphone ports for bent pins or cracked surrounds.

Viewfinder and LCD screen. Look through the viewfinder for fungus (a web-like growth on the optics), haze, or scratches. These do not affect the image but can make composition difficult. Check the LCD screen for dead pixels, pressure cracks, or delamination at the edges.

Lens mount. The lens mount is a precision-machined brass or aluminium ring that should be perfectly flat and free of play. Grip the mount and try to flex it gently — any movement suggests the camera has been dropped with a heavy lens attached. Check the electrical contacts on the mount for corrosion or scoring.

Step 4: Test All Functions

A visual inspection tells you about condition; a functional test tells you whether the camera actually works. Run through each of the following before committing to a purchase:

Autofocus. Test AF in both single-shot and continuous modes. Point the camera at a subject with clear contrast and confirm that focus locks quickly and accurately. On DSLRs, also test Live View AF separately, as the phase-detect and contrast-detect systems are independent.

Image stabilisation. If the camera has in-body image stabilisation (IBIS), enable it and shoot at a slow shutter speed (around 1/15s). Compare the sharpness to a shot taken with IBIS disabled — the stabilised shot should be noticeably sharper. A failed IBIS unit will produce images that are no better stabilised than unstabilised.

All shutter speeds. Fire the shutter at every speed from the fastest (typically 1/4000s or 1/8000s) down to a full second. Listen for any irregular sounds — a healthy shutter has a consistent, clean sound at each speed. An irregular or grinding sound at specific speeds suggests a worn shutter mechanism.

Video recording. If video capability matters to you, record a short clip at the camera's maximum resolution and check for overheating warnings, rolling shutter artefacts, and audio sync. Some cameras develop overheating issues as they age that only manifest during extended video recording.

Battery and charging. Check the battery health indicator in the camera's menu (most modern cameras display this). A battery that holds less than 70% of its original charge should be factored into the price, as a replacement typically costs £30–£80 depending on the model.

Step 5: Understand eBay Condition Grades

If you are buying on eBay, the seller's condition description is your primary source of information about the camera's state. eBay uses a standardised set of condition grades for cameras, but sellers have significant latitude in how they apply them. Understanding what each grade should mean — and what questions to ask when it does not — is essential.

The most important thing to remember about eBay condition grades is that they are self-reported. A camera listed as "Used – Like New" by a private seller with 10 feedback is a very different proposition from the same grade applied by a specialist seller like Camera Centre Cardiff or Ffordes with thousands of positive reviews. Always cross-reference the grade with the seller's feedback score, the number of photos provided, and the specificity of the description.

Step 6: Buying Remotely — What to Ask Before You Commit

When buying online without the opportunity to handle the camera first, the questions you ask the seller before purchase are your primary protection. A seller who responds promptly and in detail is a good sign; one who gives vague or evasive answers is a warning signal regardless of their feedback score.

The five questions worth asking every time are: What is the shutter count? Are there any scratches, marks, or damage not shown in the photos? Does the camera come with its original charger and battery? Has it ever been repaired or serviced? Are all functions — autofocus, image stabilisation, video — working correctly?

If the seller cannot or will not answer these questions, that is itself useful information. Reputable specialist sellers — MPB, Wex Photo Video, Camera Centre Cardiff, Ffordes — provide this information proactively in their listings, which is one of the reasons buying from a specialist often justifies a small premium over a private eBay listing.

Step 7: Know Your Rights

Buying from a business seller on eBay UK gives you the same consumer rights as any other retail purchase under the Consumer Rights Act 2015. If the camera is not as described, you are entitled to a refund within 30 days, or a repair or replacement within six months. eBay's Money Back Guarantee provides an additional layer of protection even when the seller is unresponsive.

Buying from a private seller on eBay gives you fewer statutory rights — the Consumer Rights Act does not apply to private sales — but eBay's Money Back Guarantee still covers you if the item is significantly not as described. The practical implication is that buying from a private seller requires more due diligence upfront, because your recourse after the fact is more limited.

Buying from a specialist retailer (MPB, Wex, Ffordes) gives you the strongest protection: full Consumer Rights Act coverage, the retailer's own warranty (typically 6–12 months), and an established returns process. This is worth paying a modest premium for, particularly on higher-value purchases.

Quick Reference: Pre-Purchase Checklist

Used camera buying rewards preparation. The cameras that represent the best value — a Nikon D750 at £400, a Sony A7 III at £900, a Fujifilm X-T4 at £700 — are also the ones that attract the most competition from informed buyers. Going into a purchase with a clear checklist means you can move quickly when a good example appears, and walk away confidently when something does not add up.