Due Diligence While Buying a Used Camera

[Krish Chandran]

Many important points. I would also emphasise on getting the service history from respective OEM service centres. If you have the serial number and approach with a smile, they usually indulge you ( I have been lucky on that count), obviously off the record, and let you have the service history which often throws up surprises.

That is an excellent and useful hack, but there is a catch: an empty or clean OEM service history can be misleading.
While a detailed record is great, the absence of one doesn't mean the equipment is flawless. In fact, it often points to a careless or stubborn owner who completely neglected maintenance or relied entirely on unauthorized, third-party fixes.
For example

• A machine with zero logged issues might look perfect on paper, but it usually just means it hasn't seen a professional technician in years.
• Stubborn users (who proudly proclaim "never needed repairs") frequently skip needed maintenance entirely, meaning  wear and tear goes completely undocumented.
• Careless owners often patch up critical failures using cheap, unauthorized local mechanics just to keep the machine running until they can sell it. WhatsApp groups are full of queries asking about "trusted" (but not authorized ) repair people

Ultimately, a spotless OEM record is only helpful if it proves regular, scheduled maintenance happened—not just that the machine managed to stay out of the official shop

[Somnath Goswami]

Many important points. I would also emphasise on getting the service history from respective OEM service centres. If you have the serial number and approach with a smile, they usually indulge you ( I have been lucky on that count), obviously off the record, and let you have the service history which often throws up surprises.

[manindra_m]

• Physical condition: Minor paint peeling and scratches are fine. Avoid major dents or signs of drops, abuse or water damage.
• Sensor: Check for scratches, coating damage or image artefacts. Dust can usually be cleaned.
• Autofocus: Test AF-S, AF-C, eye AF and subject tracking, if available.
• Shutter and burst mode: Test different shutter speeds, continuous shooting and buffer performance.
• Buttons and dials: Check every button, dial, touchscreen and menu.
• Back-button focus: Assign AF to a rear button and verify it works.
• Card slots and ports: Test all SD/CFexpress slots, USB, HDMI, microphone and headphone ports, as applicable.
• IBIS and lens mount: Check image stabilisation, mount condition and lens communication.
• Display and EVF: Look for dead pixels, flickering and damage.
• Shutter count: Check using a compatible tool, but don't judge condition on count alone.
• Battery and connectivity: Check battery health, charging, Wi-Fi and Bluetooth.
• Test images: Shoot at different ISO levels and apertures; inspect images at 100% for lines, spots and unusual artefacts.

[g2]

Shutter count, autofocus in photo and video, sensor cleanliness, whether all buttons and dials work

Add burst mode + a good visual inspection of the camera for dings, dents, etc.

If buying in person I would just use the camera as I plan on using it to make sure everything is working.

If buying online do the above as soon as you receive the camera.

On the few occasions I have sold a camera, I invited the buyer to come and test the camera. If in person testing is not possible I take a few videos showing the camera condition, the workings, and send it to the buyer.

[Saptarshi]

Also looking for advice on the same, especially for online transactions.

What are the non-negotiables that should be checked before finalizing the deal? Shutter count, autofocus in photo and video, sensor cleanliness, whether all buttons and dials work - are few which come to my mind. What else?

[Sheeesh]

Buying my first used camera what should I be checking before I pay?

Seeking opinions on buying from individual buyers/sellers. Appreciate any input.
(P.S. Couldn't find a buying advice post on the forum)