The K&F Concept 49mm MC UV Lens Protection Filter is well made and easy to use. Feels lightweight but great quality. It’s a great product.

This isn't the first K&F Concept lens gear I've used, and it won't be the last. It's economical, and works as it should. Despite being inexpensive, the UV filters don't display any irregularities or distortion. Quite happy with it.

Le filtre est livré dans une boîte de rangement avec un chiffon microfibre, un capuchon, et une dragonne.

La qualité de fabrication est bonne. On fixera la dragonne au capuchon et on viendra l'attacher à l'objectif. Ainsi, il est impossible de le perdre.

Le filtre U.V. fait correctement son travail, qui reste principalement de protéger la lentille des poussières et autres possibles projections. En cas de choc, c'est également lui qui viendra se sacrifier pour sauver l'objectif. Je l'ai monté sur un Can*n EF-S 55-250mm, et il s'adapte comme un gant.

Bonne qualité, prix correct... Rien à redire, ce filtre est tout à fait recommandable.

Excellent value for an essential filter for your camera. UV filter is made of quality glass and does not affect the quality of the image. Recommended.

I needed an additional 52mm UV filter for a Nikon DSLR lens. I discovered this K&F Concept filter was available on K&F CONCEPT, which is reasonably priced. K&F has increasingly developed a pretty solid reputation for producing quality photography equipment (e.g., tripods and heads) & various other accessory products.

I am very pleased with this filter. The filter arrived attractively boxed in a cardboard outer box, as well as an additional inside snap-closing plastic box. The "kit" included the filter, an extra 52mm lens cap, a short camera wrist lanyard & a micro lens cleaning cloth.

All items in the kit present as clean & there isn't a hint of dust or film coating on the filter, which indicates this product was manufactured & packaged in clean environment. I really like the knurling that is present on the outside circumference of the filter; this allows for better gripping/control while handling the extremely lightweight filter & attaching it to one's lens. The K&F filter screwed very easily onto the lens, indicating good machining of the filter's matte finish aluminum frame.

I highly recommend this attractively priced, well-made K&F Concept UV lens filter.

I recently purchased a lens with a 58mm thread size, so I was out looking for a UV filter to protect my investment. One of the first things I learned about photography is that it is always cheaper to replace a filter than a lens due to an accidental scratch or abrasion. When you are out and about, you also don’t have to be paranoid about wiping off the surface of a filter, which often happens when you do not have the time to do it properly with a blower or a cleaning cloth.
I have K&F filters on almost all of my lenses and have not seen any noticeable issues in using them. This package included a cleaning cloth, lens cap and a cap lanyard. Personally, I like to keep my OEM lens caps safe at home. If you sell a lens, it will always look a bit more attractive to most buyers with the original cap be it Canon, Nikon, Sony, etc.
The lanyard is orange colored and very well made compared to others I have. Regarding the cleaning cloth, you can never have too many of these on hand. All of this was packaged in a clear hard plastic case which could be used for other items.
For the price, I consider this to be a very good package to buy.

K&F Concept are good quality filters available at a reasonable price, always clean and clear glass. Highly recommended for your photographic needs

Sono un appassionato di fotografia e spesso uso la reflex non solo per passione ma anche sui cantieri per lavoro. Per proteggere le lenti delle ottiche migliori, ho deciso di testare questa lente UV a bassisima riflettenza, che permette di proteggere il vetro anteriore degli obiettivi dalla polvere e da eventuali schizzi, ma anche da urti fortuiti leggeri che potrebbero altrimenti rigare la lente originale.

Il filtro che ho preso è da 72mm ed è perfetto sul mio tamron 17-50 2.8 che uso moltissimo.
Arriva in una scatolina di cartone dentro la quale c'è un box semi-rigido che contiene a sua volta il filtro e anche un tappo da 72mm davvero ben fatto e dotato di laccetto da polso arancione, anch'esso ben realizzato e comodo per avere il tappo sempre a portata di mano.
Il kit è completato da una pezzetta in microfibra per la pulizia delle lenti.

La cornice della lente è di alluminio verniciata molto bene. Ottimo il feeling del materiale e perfetta la filettatura. La risposta sulle foto è ottima: non altera i colori e non crea problemi di messa a fuoco, garantendo una maggiore protezione della lente principale della mia ottica.
Lo reputo un buon acquisto per avere maggiore protezione sulle ottiche importanti, soprattutto se usate in contesti "a rischio". Prodotto ben fatto ed a un prezzo perfettamente in linea con la qualità generale del prodotto: inoltre con l'acquisto si ha un tappo di riserva, davvero ottimo per conservare quelli originali e stare senza pensieri.

I tested this K&F Concept 52mm UV Filter
Here's what I found...

UV blocking ilters protect lenses from dirt and damage (and stop colour shifts if you still shoot film)- but they can also reduce image quality - so I test all new filters and reject some.

How did I test it?
[1] Colour shift - I used a set white balance and looked for colour shifts with and without the filter in place on a Nikon DSLR with a prime lens set to its highest quality setting (100asa and F8) both inside with artificial light and outside in sunlight.
[2] vignetting - I looked at the edge of the image for any additional shadows with and without the filter
[3] flare and contrast- I photographed lightbulbs and the sun between tree branches with and without the filter
[4] distortion - I photographed a newspaper page with and without the filter

Pros ✅ Viewed on a retina laptop screen I could see no differences except in contrast. This turned out to be the effect of NOT using the correct lens hood. Basically - and side lighting can catch glass and cause reflections. Internal reflections are what photographer call "veiling flare" and this kills contrast. As the filter makes the first glass surface of the lens much less recessed (and so more visible) it risks vcausing eiling flare.
This happens with any lens - and the solution is to fit and use a lens hood whenever possible.

Cons ❌ none in "real world use". As with all filters, when I went to 800% image size there was a slight loss of resolution, but for my standard HDTV use or printing to 8x6inch size this was "invisible".

The only difference I could see over the classic "Hoya" filters was that the filter ring is thinner and so better to use on a wide-angle lens. There is a cost to this however, as the light weight of this filter tells me it is made of aluminium and so is easier to bend than say the brass ring filters from B&W (which cost way, way more!) - so the moral of this is to leave the filter on the lens - or protect it in a rigid lens case if you take it off. And there you get a good snap closing filter box in the pack - along with some useful additional accessories.

OVERALL - I like this - and would be happy to get it again. Unless you are ready to pay the £50 plus for the brass-made B&W filters, these seem to be as good as any other but at a lower price.

Delivery was quick - it came the next day which is great service.

I needed a UV protective filter for a new lens, so I picked up this K&F Concept 72mm MCUV Lens Protection Filter with Lens Cap. K&F is a brand I really like for reasonably priced filters. The other K&F filters I have are all very sharp and do not introduce any visual anomalies into my photographs. However, the extremely low price of this filter made me wonder if corners might have been cut. As far as I can tell, based on limited use, that is not the case. The filter uses AGC glass with 18 layer multi-coating, and all the shots I have taken with it on the lens are sharp and clear. I like the deeply knurled edge that makes it easy to grip even though it is very thin, and the filter threads on smoothly. I also like that it comes with a lens cap, a lanyard, and a cleaning cloth. It is a very nice package and a great value. If I notice any issues as I use it more, I will update this review.