NiSi's range of Protector filters is going through a major overhaul and simplification, read the below to avoid confusion. (January 2023)
Before 2023 NiSi offered 4 different UV filters targeting 3 different price classes. As is usually the problem with Homo Sapiens, too many options is not always a good thing, despite the good intentions. In January 2023, NiSi released the UHC UV, which packs all of their latest optical tech into an ultra-thin knurled aluminium frame. This filter is cheaper than 3/4 of the previous offerings, but offers superior optics to all 4 ranges. The goal is to replace all 4 the previous ranges with this one. The only compromise is the aluminium ring, which is why we will still stock a minimal amount of the HUC UV for those who insist on brass.
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.
- UHC UV (released 2023) - All the latest and greatest optics and coatings in an aluminium frame at an excellent price. (77mm = R899)
- SMC UV (LAST STOCK)(77mm = R699.00)
- Pro Nano HUC Protector Filter (LAST STOCK)(77mm = R1 049)
- PRO Nano HUC UV (will hold minimal stock going forward)(77mm = R1 399) – 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).
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.