We offer three different UV filters from NiSi as well as a more modern alternative - a protector filter. Please read below to understand the difference between the products on offer -
UV filters eliminate the ultraviolet light, which we cannot see, but affects our images. One of the first issues to take note of is that the light we as humans see and that is critical to our images' colour capture is around 400-750nm. Anything below is considered UV and anything higher is considered IR.
Most camera's sensors can potentially see a massive spectrum, ranging from 200nm to 900nm, which contains a lot of light that is detrimental to the colour integrity of any photo. For this reason, most cameras have an IR and UV filter that limit the range from around 250nm to 780nm. What remains between this range and the visible range can affect colour, but it is very seldom noticeable in images. It used to be a much bigger problem in the film days when UV filters were considered a must-have accessory. One can't absolutely make the argument that UV filters serve no optical purpose in the digital age, as there are situations in which they do help as they cut out the range between the built-in filter and the visible spectrum; 280-395nm. Their real purpose lies in something much simpler - as a protective element for the lenses that cost us so much money.
In the film days, this was a secondary benefit to the filters, but with the advent of digital sensors and built-in UV filters, their secondary property has become their primary purpose. NiSi offers three different UV filters, the primary difference being the material that the ring is made of. They also offer a filter that is the more modern approach to this situation - a protector filter, which features much stronger glass than the UV filters at a lower price. If you truly just want to protect your lens, this is the one to go for. If you want to protect your lens and eliminate the 250-395nm light spectrum, then choose one of the UV's based on the below information.
- SMC UV (77mm = R699.00) - This is NiSi’s budget UV filter and doesn’t offer much. It is a reliable UV filter made for economy. It lacks their proprietary HUC nano-coatings and doesn’t have knurling, which makes it easier to grip a filter.
- Pro Nano HUC Protector Filter (77mm = R1 049.00) - This filter features their HUC nano-coatings, but instead of a UV cutting filter, it features super-strong optical pro glass that allows near perfect light transmission to protect your lens without interfering with the image quality. It also features prominent knurling, which make it much easier to grip and the aluminium frame means it is super-light and ultra-thin.
- PRO Nano HUC UV (77mm = R1 399.00) – This filter series filters feature a brass ring, which doesn't jam easily as it's a very malleable material. It is also more resistant to temperature changes, meaning it won't get stuck as easily in extreme temperatures. The downside is that brass is very heavy (3.5x times the density of aluminium).
- Titanium Alloy UV (77mm = R2 099.00)- When it comes to metals, there are few that beat Titanium. It is stronger, lighter and more resistant to extreme temperatures than almost any other material. If you're the kind of person who doesn't compromise, then this filter is for you.
What does HUC stand for? This is a term you will see repeated often in NiSi’s filter naming, so it is worth knowing what it means. It refers to the nano coatings on the filters, which is where the magic happens. Below are some of the qualities derived from their HUC nano-coatings
- Hydrophobic – This makes water bead and roll off as well as making it very easy to wipe away moisture and spray.
- Anti-static -This also makes it much easier to clean filters as dust and grime cannot grip onto the glass.
- Anti-reflective – This ensures that the light you want gets through, but the light you don’t want doesn’t. A more literal example is when shooting into a bright light source, it prevents ghosting caused by light reflecting around between the filter and the lens.
- Ultra-hard anti-scratch surface – nano-coatings can be made much harder than optical glass, which protects it from scratches, which can easily ruin the filter.
All NiSI circular filters ship with a hard plastic storage case. If you are purchasing multiple circular filters, the circular caddy pouch is a great addition for quick, safe and easy transport, storage and access.