Frequently Asked Questions

Question: What is the Reusable concept of Rapido?

Answer: Rapido provides three types of Clamps (V3, S2/S3, and T1). By pairing with different step-down rings, you can use one clamp to connect different anamorphic lenses.

Question: Return Policy?


Thank you for shopping with us. If you are not 100% satisfied with your purchase, we will gladly exchange it or provide you with store credit.

  • Please contact us first for return authorization.

  • Returns for full refund are ONLY accepted within 7 days after the package is received.

  • Returns made after 7 days will only be issued store credit.

  • No return after 45 days of purchase.

  • All items are subject to a 15% restocking fee and shipping & handling fees.

  • Shipping and handling on returned merchandise is non-refundable (unless the product is damaged or the wrong item was shipped).

  • Customize machined parts, like Customized Front Filter Adapter is non-refundable (unless the product is defected).

Question: How can I find out my shipping charge?

Answer: Type in your postal address and before checking out, your shipping charge will appear in Paypal.

Question: Why I need a step-up / step-down ring?

Answer: Step-up ring connects the back of clamp to the front of taking lens. Step-down ring connects anamorphic lens to the clamp.

Question: I have an Anamorphic lens, how do I find Rapido packages for it?

Answer: https://www.rapidotechnology.com/products/clamp-package

Question: I want to buy FMJ, but my anamorphic lens is not listed in the features. What can I do?

Answer: Please contact us via email info@rapidotechnology.com

Question: What's the difference between FVD-16A vs. FVD-16B, and how to choose between them?

Answer: FVD-16A is optimized for 50mm taking lens, when pairing with longer focal length (>85mm), the optical performance drops, so you won't get a sharp image at wide open. You can test FVD-16A with 85mm, 100mm, and 135mm taking lens, comparing to the result without FVD-16A (try double focusing), when focusing on the same object at the same distance to see the difference. FVD-16B is optimized for 100mm taking lens, check out the test results here: https://rapidotechnology.wordpress.com/2020/07/10/rapido-front-variable-diopter-16b-fvd-16b-sharpness-test/

Question: How to choose FVDs in general

Answer: check the bottom of this page https://www.rapidotechnology.com/products/front-variable-diopter

Question: Is it possible to use FVD-35A with Hypergonar HI-FI-2 without vignette?

Answer: FVD-35A covers 45mm with 2x scope on a full frame sensor. There are only a few anamorphic projection lenses (Kowa ANAMORPHIC-35 1.5X) can cover that field of view. So in 99% of the case, the FOV limit is the anamorphic projection lens by itself, not the FVD-35A.

Question: My taking lens is a Canon FD 55mm 1.4. Which step-up ring I need to buy to connect to the clamp V3?

Answer: The back of V3 full or lite clamp has 77mm male thread, so you need to check the front filter size of your taking lens, in this case, it's 55mm, so you need a 55-77mm step up ring, part 0201 here: https://www.rapidotechnology.com/purchase/step-up-rings. Remember to use single step up ring to keep minimum distance between the front of taking lens and the rear of the anamorphic projection lens.

Question: I’m confused whether the FVD-16A will work for all of these lenses ( 35mm, 50mm, 85mm, 135mm ) or if I will need the FVD-16B version for the 135mm?

Answer: Check the Max coverage information of each FVD, to make sure the selected FVD covers your choice of taking lens on your camera (you need to convert everything on full frame scale). Secondly, read through the specs page of each FVD to make sure you understand the limit of each FVDs, so you can choose them wisely.

Question: I want to attach an ISCO Ultra Star Plus 2.1 (Red) to a Canon FD 50mm F1.4, and build a single focus solution. Which setup would be best ?

Answer: Checking out the FMJ package: https://www.rapidotechnology.com/products/clamp-package/anamorphic-lens-package/isco-anamorphic-lens/isco-cinemascope-ultra-star-f-50-mm and also our single focus solutions: https://www.rapidotechnology.com/products/front-variable-diopter