Buying a Used Lens in Japan: Inspection Checklist

1. Confirm the mount and exact version

Match the full model name, mount and generation to your camera. Similar lens names can hide different mounts, coatings, stabilization systems or revisions. Bring your camera body when practical, or save the exact mount and model before the trip.

Two similar names, two different lenses

A shelf label such as “Sony 35mm F1.8” leaves an important question open. Sony’s specifications distinguish:

• SEL35F18 specifications: APS-C; Sony E-mount.
• SEL35F18F specifications: 35 mm full frame; Sony E-mount.

Match the complete model code before treating two prices as offers for the same lens. For an APS-C camera, either format may be worth investigating. For a full-frame camera, confirm that the lens’s coverage and the camera’s shooting settings meet your needs. The shared mount alone does not settle that question, or every supported function.

Before comparing a bargain:

1. Copy the exact body and lens model codes from the items or their labels.
2. Use Sony’s compatibility tool for that combination. Start from a body, lens or mount adapter and read any limitations.
3. Ask to test the actual used lens on a compatible body. Confirm the functions you need and keep unresolved points with the quote.

This is a published-specification example, not a physical test or recommendation of either lens. Other brands need their own model-specific compatibility checks. Check condition, accessories and sale terms separately before the online comparison below.

Sony model/format specifications and compatibility-tool source check: October 9, 2026. This check covers only the example above.

2. Inspect the glass deliberately

• Look through the front and rear under more than one angle.
• Separate normal dust from haze, fungus, coating damage or scratches.
• Ask the shop to explain any condition note you do not understand.

Do not use one cosmetic mark as a shortcut for optical performance. Record what is actually visible and what the seller states.

3. Test the moving parts

Rotate focus and zoom rings through their range. Check for unexpected stiffness, looseness or grinding. If the lens has a manual aperture ring, switches, buttons or a tripod collar, operate them. For retractable or extending lenses, confirm the mechanism completes normally.

4. Test it on a compatible camera

Confirm autofocus, aperture control and any stabilization or electronic communication you plan to use. Take test frames at more than one focus distance and aperture. If the shop will not allow a test that matters to you, treat that as an unresolved purchase condition rather than assuming it is fine.

5. Count the included parts

Front/rear caps, hood, case, collar, filter adapter and original box can affect replacement cost. A lower lens price may stop being lower after replacing missing parts.

6. Write down warranty and return terms

Used-store guarantees differ by seller and condition category. A bargain or junk category may carry different protection from an ordinary tested-used item. Ask for the terms for the exact unit and keep the receipt.

Use the same comparison note at every shop

For the body itself, use our used-camera inspection guide. For two complete offers, use the camera comparison tool.

Use the seller's written condition and guarantee as part of the inspection

Physical testing should be paired with the seller's condition category and protection. Shinjuku Kitamura Camera's current used-camera guidance is one example of a retailer separating ordinary used items from junk/low-condition goods and assigning different guarantees and return treatment. Do not copy that policy to another shop; instead, use it as a reminder to ask what the exact lens category means at the seller in front of you.

Kitamura official used-camera guidance