CHG_CANON wrote:
If you have a chance to handle the lens before purchasing, you should bring a small flashlight and flash through the lens looking for dust or mold / fungus. See details
https://kenrockwell.com/tech/flashlight-test.htmBuying online is pretty limited on Q&A and physical inspection. Images of the lens should clearly show the front and back surfaces of the lens. If there's a reference to fungus, something you may see mentioned in ebay listsings, move onto other lenses. Companies like KEH, B&H, Adorama will provide return windows, no questions asked. Not so from ebay where if the lens arrives in the same condition as stated in the for-sale listing, including dust inside the lens, fungus or cosmetic scratches, you have no justification for return / refusal.
Mount the lens to your camera and assure it focuses on subjects near and far. Assure it focuses quickly and quietly. If the lens is IS / VR enabled, assure it functions. Confirm the aperture opens and closes when shooting, etc. Confirm all buttons and switches operate. Assure it has both end caps and a hood, even it the hood was sold separately when new.
View the
completed sales on ebay for the actual sales prices of the same equipment over the last 6-months or so. Check the EX rating for the same lens at KEH and take off 25% if you want to try to negotiate a better price in a private sale. Most used equipment is fully operation in good to pristine condition, particularly via the larger resellers.
If you have a chance to handle the lens before pur... (
show quote)
I buy used frequently. Buy only from sellers with good rating/review and a number of sales; avoid sellers that have just started. Buy only with Paypal, and ensure that your sale is covered by the eBay/Paypal guarantee. Read the listing, and inspect the images of the lens, carefully; the seller is obligated to note any issues with the lens. You are concerned with dust, fungus, scratches or other surface defects. You are concerned with correct operation of dials, switches, motors. You are concerned with uniform sharpness. And you are concerned with any mechanical noise.
If you have any questions with the seller description, or something you see in the pictures, ask the seller before bidding.
Then buy the lens.
When you get the lens, ensure that the package shows no shipping damage. If it does; send it back unopened.
Once you open the package, inspect the lens. Compare it with the pictures to ensure it is the same item. If serial numbers are shown in the picture (that is a positive for any listing on eBay), compare them. Verify that the lens matches the listing and the condition matches the sellers description.
Test the lens. Take pictures; verify that it zooms, focuses, stabilizes. Take test images of newspaper or brick walls, to verify uniform sharpness.
If you are satisfied with the performance of the lens, then congratulation...you just got a good deal.
If you are not satisfied, then contact the seller with your issues. The seller can offer a return, exchange, or discount; whatever will satisfy you. Do not, however, request anything other than a return if you are not satisfied. Asking for a discount is frowned upon and can impact your ability to resolve the issue through eBay.
If the seller does not respond or offer a solution, you can elevate your issue to eBay. They are quite buyer oriented; often to the dismay of sellers that feel they are being cheated by buyers. But you will usually get a quick resolution to your issue; you return the item and get a refund. Shipping is usually covered in the return.
Finally, always use eBay to communicate with the seller. They keep track of all of your correspondence and use that to resolve your issue. Do not communicate by other means with the seller; there is no record of that conversation so it will not help your case.
I have bought and sold on eBay since 1998. The only issues I have had were with some purchases shipped from China; so be careful buying from foreign sellers. I only buy inexpensive hardware from overseas; nothing optical or mechanical.