What are the common traps to be aware of when searching for lens store online?

When purchasing lenses online, pay attention to the following common pitfalls:
price trap
Some merchants attract consumers with ultra-low prices, but the actual products may have quality issues or functional deficiencies, such as poor night vision and blurry lenses. Be cautious of products with significant price differences from market prices and avoid purchasing equipment with safety hazards.  ‌
Privacy leakage risk
Some cameras may be pre installed with malicious software or stored with unencrypted data, posing a risk of being hacked or illegally accessed. When purchasing, it is necessary to confirm whether the product has data encryption function and prioritize choosing well-known brands.  ‌
Lens Material and Brand Fraud
Online lens matching may have situations where the lens brand does not match the promotion (such as labeling "Mingyue" as "Wanxin"), or using low-end online sales brands instead of regular products. Suggest purchasing through official channels and verifying the product's anti-counterfeiting label.  ‌
After sales service risk
Some merchants do not provide return or exchange services for customized products (such as lenses), or use the excuse of "optometry data issues" to shift responsibility. Before purchasing, it is necessary to confirm the warranty terms and prioritize selecting merchants who support free debugging.  ‌
Second hand lens price trap
Attention should be paid to the abnormal price of second-hand lenses (more than 30% higher than the market price), which may be a gimmick for merchants to induce transactions, or there may be serious malfunctions. It is recommended to prioritize individual sellers and check their credit scores and dispute records.  ‌