We are happy to announce that we have finally developed our own photography grade UV transmitting bandpass filter! This filter pairs with a full spectrum converted camera for true UV photography. Read our UV photography articles for lens considerations and general advice for shooting UV successfully.
Great for photography, skin damage analysis, forensic analysis, astrophotography, and other uses.
Unlike other UV filters on the market which are interference coating based, we have developed our filters using absorption based glass. The efficacy of interference coatings depends on the angle of incidence, meaning that transmission characteristics change depending on the angle of the light rays. This may be fine for use with a telescope, where there incoming light is very parallel, but for general photography this causes problems with inconsistent color across the frame. Those familiar with our hot-mirror’s may recall the issues with earlier interference based hot-mirrors.
Our filter has a 50% transmission peak at 365nm, and >25% transmission between 340-380 for high total light transmission. Average out of band rejection is >OD 4.3 (0.005%), with a minimum rejection of>3.5OD (0.025%), meaning there is a high signal to noise ratio and no IR contamination.
Our UV filter is coated for durability. Uncoated UV glass is sensitive to oxidation when exposed to humidity, ruining the filter. Due to the thickness of the glass, the filter is only threaded on one side only.
Lens filters may be returned for a store credit minus original shipping within thirty (30) days as long as they are in mint condition. 20% Restocking fee will apply to all filter returns. Buyer pays return shipping. Refund does not include original shipping charge. We are able to waive this fee if the return is processed as a store credit or exchange.
At Kolari, we build our filters to last and have complete confidence in their performance. You will too with our lifetime guarantee against defects. If you find something wrong with your filter, at any time, write us at firstname.lastname@example.org. Visit our FAQ section for more information.
Do you accept international orders?
Absolutely! For accurate shipping costs, please enter your complete shipping address during the checkout process. Some locations may be subject to a remote area surcharge via FedEx Express. The system will not automatically calculate this surcharge. Please check the following link if your city/zip code is considered a remote area: https://www.fedex.com/content/dam/fedex/us-united-states/services/Zipcodes_OPA_ODA.pdf
If you place an order and your city/zip code is on this list, we’ll reach out to you via email to collect the surcharge.
***We legally can not declare lower values for customs and duties. We ship all of our international orders from the United States. Please note that we do not collect taxes, duties, or VAT. International customers are responsible for all duties, taxes, and VAT that may be charged by their respective local customs office. You may also be subject to a brokerage charge when you choose FedEx, UPS, or DHL shipping options.***