Hi there!

As you may have noticed opticallimits.com is free-of-charge and there is no plan to change that at the moment.

However, financially it's not an effortless operation, of course. The costs include ...

• rental fees for multiple webservers
• rental fees for photo equipment and shipping costs
• about 20% of the tested equipment is actually purchased in normal shops out there. We've only minimal relationships with a few manufacturers.
• testing equipment (studio equipment, charts, software, hardware, etc. pp)

If you think that it is worth keeping the site up and kicking, you're most welcome to send a donation via PayPal. PayPal accepts most major credit cards.

Using PayPal you can transfer a donation to a specific person as simple as specifying a target email address ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ) in the "Send Money" section of PayPal.com or, even easier, just click on the button below to start the donation process - it's easy!

Please note that OpticalLimits is NOT a registered not-for-profit organization so we CANNOT send out tax-deductible certificates. The donations are getting taxed in Germany as part of the standard revenues. We may not be able to thank you personally but rest assured that your support is highly appreciated!

The opticallimits.com Team