These terms explain how you may use Zlens, why it needs an account, what the one-time purchase includes, how payment works, and what each side is responsible for. They are written to be read; if anything is unclear, write to us.
These terms of service ("terms") are the agreement between you and Lenscript (光子方程), an independent developer team ("we", "us"), for the Zlens mobile app ("Zlens" or "the app") and the website zlens.lenscript.cn ("the site"). By installing, opening, signing in to or buying Zlens, or by browsing the site, you confirm that you have read and agree to these terms. If you do not agree, please do not use them.
You must be at least 14 to use Zlens. If you are under 18, read these terms with a parent or guardian and get their consent before buying.
If you downloaded Zlens from the Apple App Store, Apple's standard Licensed Application End User License Agreement also applies; for the App Store version, that agreement prevails where it differs from these terms.
Zlens is a camera remote app for your phone. It talks to Sony, Nikon, Canon and FUJIFILM cameras over Wi-Fi (PTP-IP), Bluetooth and USB to provide remote control of settings, live view and monitoring tools, RAW transfer, video-to-live-photo conversion, multi-camera control and on-set client review. Zlens is independent third-party software: it communicates over published protocols, does not break device encryption and does not modify camera firmware.
Compatibility is defined by the camera profiles listed under "Cameras" on the site; a profile describes protocol-level capability. Different bodies and firmware versions of the same brand expose different capabilities; Zlens negotiates the actual capability with the camera after connecting, so we do not guarantee that every feature works on any particular camera. Check your camera with the site's lookup before buying, or try the interface in the app's demo mode.
Zlens requires you to sign in with an email one-time code (there is no password); the app asks you to sign in before connecting a real camera. The account is used to sign you in, deliver codes, restore unlocks obtained with a redeem code, and handle your support requests. Use your own email address and never pass a code on to anyone.
You can delete your account at any time in the app under Settings → Account, or ask us by email; see the account deletion page. An unlock bought through an app store belongs to your store account and is not affected by deleting your Zlens account; an unlock obtained with a redeem code belongs to your Zlens account and is lost when the account is deleted.
Provided you comply with these terms, we grant you a non-exclusive, non-transferable, revocable licence to install and use Zlens on mobile devices you own or control, for personal and commercial photography alike.
You must not:
Zlens is a one-time purchase: pay once, use it for good, no subscription, no renewal. Without a purchase you can explore the whole interface in demo mode; connecting a real camera requires the unlock. The price is the one shown in the app store or on the purchase page when you buy: USD 19.99 outside mainland China, CNY 99 in mainland China.
Before launch the site offers "register your email". Registering creates no obligation to pay and is not a price guarantee; we only email you the download link on launch day.
When you buy through an app store, Google Play or Apple processes the payment under its own rules and the app passes the store's purchase token to our server for verification. We never see or store your card or other payment credentials. Digital goods are delivered as soon as payment is confirmed; nothing is shipped. We may change future prices; a change never affects a purchase you have already completed.
Zlens does not give refunds. The unlock is a digital good, delivered as soon as payment is confirmed, and once delivered it is not refunded; money you have already paid is not returned because you stop using the app or change your mind. Zlens is a one-time purchase with no subscription and no renewal, so there is nothing to cancel; a redeem code is likewise not refunded once it has been used.
If you bought through an app store: refunds are handled by Google Play or the App Store under their own policies. That process is the store's to decide — we do not intervene in it and give no refunds outside it; if a store does complete a refund, the unlock is withdrawn along with the store's record.
Where the law of your place of residence gives you a right of withdrawal or refund that cannot be waived, nothing in this section limits it; by paying you agree that we begin delivering the digital content immediately (unlocking the app) and acknowledge that the right of withdrawal is lost once delivery has begun. Billing error correction: a duplicate charge, or an amount that does not match the price shown on the purchase page, falls outside this section — correcting a mistake is not a refund policy. Write to donaldkuke@gmail.com and we will verify and correct it.
Zlens changes camera settings, fires the shutter and transfers files by remote control — the same actions you could take on the camera by hand. Before relying on it, understand how your camera heats up and drains its battery during wireless connections, long live-view sessions and transfers. For unattended features such as interval shooting and bulb exposures, make sure the location and the equipment are safe.
Photos and videos transferred to your phone are yours to store and back up. Transfer history and "skip already transferred" rely on local records that reset when you uninstall or clear the app's data. We are not responsible for files lost through device failure, network interruption, lack of storage or mistaken operation.
Sony, Nikon, Canon and FUJIFILM, and their product names, are trademarks or registered trademarks of their respective owners. Zlens is not affiliated with, sponsored by or endorsed by any of them; their names are used solely to describe interoperability.
Camera makers may change protocol behaviour in firmware updates, which can break individual features. We do our best to follow up, but this is not a commitment.
The Zlens software, interface, icons, copy, website content and the "Zlens" name and marks are owned by Lenscript (光子方程) or used under licence and are protected by copyright, trademark and other laws. Apart from the licence expressly granted in these terms, nothing transfers any intellectual property to you.
Your photos, videos and other content remain yours. We claim no ownership over them and use them only as necessary to provide the service.
Zlens is provided "as is". To the fullest extent permitted by law we do not warrant that the service will be uninterrupted or error-free, or that it will meet your particular needs. Feature coverage for a given camera is determined by testing; the camera profiles and feature lists on the site describe protocol-level capability, not a guarantee for a particular body.
We work to fix defects and keep the service stable, but as a small independent team we cannot promise a specific service level or turnaround time.
To the fullest extent permitted by law, we are not liable for indirect, consequential or special loss, loss of profit or loss of data arising from your use of, or inability to use, Zlens.
Our total liability to you for all claims, however arising, is limited to the amount you paid us for Zlens in the 12 months before the event giving rise to the claim, or, if you have paid nothing, to CNY 100.
Nothing in this section excludes or limits liability that cannot be excluded or limited by law, such as liability for wilful misconduct or gross negligence.
You may stop using the service and uninstall the app at any time; if you have an account you may delete it as described in the privacy policy.
If you seriously or repeatedly breach these terms (for example by circumventing paid features, abusing the service or uploading unlawful content) we may suspend or terminate your access, giving you reasonable notice where practical.
The sections on intellectual property, disclaimers, limitation of liability and governing law survive termination.
We may update these terms when the product, the law or our commercial arrangements change. The current version is always published at https://zlens.lenscript.cn/en/terms/, with the version number and effective date at the top updated accordingly.
For changes that materially affect your rights or obligations (pricing structure, content licence) we give at least 14 days' notice on this page, in the app or by email to the address you gave us. Continuing to use the service after a change takes effect means you accept it. If you do not agree, stop using the service before the effective date.
These terms are governed by the laws of the People's Republic of China (excluding Hong Kong, Macao and Taiwan, and excluding conflict-of-law rules).
Disputes arising from these terms should first be raised with us so that we can try to resolve them amicably; failing that, either party may bring the matter before the competent People's Court at the place where the operator of Lenscript (光子方程) is located.
If the law of your place of residence grants you consumer rights that cannot be waived, nothing in these terms reduces those rights.
For everything about Zlens — support, billing and payments, legal matters and security vulnerability reports — write to donaldkuke@gmail.com. We normally reply within 2 business days; security issues are handled first.