am very satisfied with the lens in every respect. The lack of autofocus is not a problem for landscape shots. The beach pictures are the first attempts with the lens.

Actually, I'm not a fan of super wide-angle photography: Everything that goes over 24mm doesn't have to be. Nevertheless, I needed this lens for a specific purpose: Milky Way photography. However, since I can only run it once or twice a year, I didn't want to spend huge amounts of money. This lens gives great results with the Canon 6D. My recommendation: stop down one stop to aperture 4 and ISO 3200/64000 with an exposure time of 25 seconds. The small gain in sharpness easily compensates for the loss in light intensity. The latter can be compensated to the same extent in post-processing, but of course not sharpness. This also gives you a bit better control of the coma (which is hardly a problem with this lens anyway).

There are already a lot of good technical reviews out there, so this isn't another. What makes a really good lens is how well it works for YOU. Yes, this lens has some weird distortions that can't be fully corrected (at least not that I've found) and it's manual focus only and doesn't communicate with the camera body, so does manual iris control. Any good points? Well... after a bit of vignette correction in Lightroom (along with as much distortion correction as the profile found allows), the image quality is very good. Most reviewers will advise against using this lens for architectural photography as it has a lot of straight vertical lines due to the mustache-shaped distortion, but that's what I mainly use it for. Sometimes creative manual distortion correction is required to fix wavy verticals. The Canon 17-40mm lens I have is easier to use, more flexible and produces less distortion, but I have some clients who are absolutely adamant about shooting as wide as possible. Is it my everyday lens for work? No, but it's always in the camera bag. It also produces fantastic images of the night sky, stars and all that stuff. For the price, this is a budget lens.

bought this lens used for Canon EF. After two weeks of only being able to test it indoors for a short time due to bad weather, and I didn't really get enthusiastic results, I became skeptical... But now after the first real photo tour I'm completely enthusiastic... it shows its strengths especially at night. .. in the field of landscape, it could become my new favorite lens... I'm looking forward to my next vacation in the Orient

After reading the mixed reviews, I decided to buy it with mixed feelings. A comparison test with the Canon L lens 1:4.0/17-40mm in position 17mm brought surprising results. When focusing at approx. 6-7m, the K&F Concept delivered equivalent or better results than the Canon in terms of sharpness. Especially in the corners of the picture, the K&F Concept delivers excellent sharpness even with an open aperture! With my Canon lens, this was only possible from aperture 11. When focusing at close range (approx. 0.5m) the behavior was exactly the opposite. Here the K&F Concept is only sharp from aperture 11 to the corners. Since I intend to use the lens mainly for landscape photography, I am completely satisfied with the performance. The distortions in the edges of the image are greater with the K&F Concept, but can be reduced in image processing and are less disturbing in landscape shots. Attached is a photo of the K&F Concept, taken in a church.

At first glance, this lens seems too good to be true. It costs around 15% of Canon equivalents, although admittedly it's manual only. However, the truth is that it's a 14mm lens, so it's got tons of depth of field at any aperture and it's not the kind of lens you'd use to isolate individual elements through focus techniques. I used mine to shoot a performance in a small, low-light location and quickly learned to judge the distance to my subjects, which worked well enough. There were a few headlights in the frame, which also didn't cause any annoying lens flare. I did some testing earlier in the day, photographing black text against a sunlit white background. I did notice some color fringing around the edge of the frame, but that's a worst case scenario and to be honest my later shots didn't give it away. I used mine at F4 so had a stop and got good sharpness throughout the frame. I've heard it's a bit soft wide open, but the truth is I try to avoid lenses wide open at all costs as you never get their full sharpness. So all in all a very economical and satisfying package for me. So why four stars? The included soft case was covered in lint and of course the lens has a large glass eye on the front that cannot be covered by a filter that attracts lint that can be visible in your images at narrow apertures. Otherwise the construction of the lens is very good with a solid body and nice smooth focus and aperture action. So if you want to try ultra wide angle photography but don't want to part with a large chunk of your monthly salary, I recommend you buy this lens. Used on a Canon EOS 5D Mk3.

...if you get a good copy, you will definitely be happy with the lens. With the first lens, the focus setting was not correct at all, it was always sharp at infinity, the second lens was great! The sharpness is good even with the aperture wide open, but cannot be compared with a more expensive lens. The strong vignetting can be easily removed in LR. Overall, I would still recommend the lens

The K&F Concept 14mm, for Canon, is love at second sight. The first impression was a bit annoying due to the manual setting, since I am now spoiled by the (expensive) AF lenses from Canon, and especially because the lens has no jumping aperture. As a result, you can no longer see anything in the viewfinder or on the monitor from aperture 8. In order to focus, it is now necessary to first set a small aperture, focus sharply here and then stop down again to the desired aperture setting. Focusing itself is relatively unproblematic, especially because when using such an ultra wide-angle lens you often work with the hyperfocal distance anyway. I was absolutely positively surprised that the aperture priority works on my Canon 5D II. The processing quality is ok. Plastic, but it doesn't look cheap or filigree at all. Of course you can't compare it to the 2000-3000 euro alternatives from Canon or Zeiss. And now the optical quality: it's awesome! Absolutely sharp, I didn't expect it for the price, but now comes the but. The distortion, it's pretty intense. Not so bad for landscape shots, but quite annoying for architectural photography. Lightroom 5 can help here, as it can fix this with just a few clicks. My Lightroom does not write that it recognizes the K&F Concept, but the distortion is corrected well. For perfect results in architectural photography, Dxo Optics Pro helps, which also recognizes the lens independently. All in all a good lens that clearly exceeded my expectations. If I were a professional and used it several times a day, I might go for the more expensive alternatives, but as an avid amateur photographer, I absolutely love it.

gave this 4 stars for a reason. In the right hands, this guarantees 5 stars. However, if you are not comfortable operating a manual lens on a DSLR, you will find it difficult to get good pictures with it. The lens is true ultra wide angle and as such it can be very difficult to get critical focus, especially as it is a very long distance from the focus ring. It may well be that you end up depending on the depth of field to ensure that focus, and thus probably not working at F2.8. Using various depth of field calculators, you can assume that infinity is sharp from f/5.6 as long as your subject is more than about 3-4 meters away. However, I have found that there are "degrees" in which one is focused. It is best to fire many test shots and know from experience where the focus is at different points on the focus ring for a given distance. If you're doing anything other than landscape photography where you can take your time, this focus issue can ruin any other kind of spontaneous shots. Another factor to keep in mind is that you will experience some barrel distortion and vignetting in the corners due to the field of view, especially when using a full frame camera. This is easily fixed if you create your shots in Lightroom by simply loading the appropriate lens profile. However, you have to select this manually, as there is no electrical connection between the lens and the camera, and therefore, fortunately, the EXIF data does not know of the existence of the lens. If you're buying it for astrophotography, it's ideal, as 14mm allows for an exposure time of well over 30 seconds, after which point you'll start experiencing star trails anyway. Just be aware of critical focus. Conclusion. This is a fantastic quality lens for the money but only in the right hands. If you're used to operating your camera only in program mode, or even in aperture or shutter mode, then this lens offers you a learning curve to overcome. It fits on full frame or crop cases, but on APS-C models the effective focal length is obviously 22.4mm. Buy it after giving it a lot of thought, for the money there is no other lens that will match it.

ordered this lens here and use it on my Alpha 7 MKII (no R). What it does is just incredible. I have never owned a lens with such sharpness, detail and color reproduction. At the beginning I bought the camera with the 24-70/4 from Zeiss and I was really happy with it. After that I bought the K&F Concept 85mm 1.4, which I am also very happy with. However, I have to admit that I bought the two K&F Concept lenses in the Canon version and use them with the Commlite adapter, which I bought because I have some Canon lenses from the past. The imaging performance, especially with this wide angle, is simply outstanding and the images are extremely sharp at apertures from 8 to 16 from a distance of approx. 2m to infinity. I initially focused with the red edge enhancement, but found that at this extreme wide angle it's much easier to shoot without focusing. My settings for landscape shots or in the city (buildings etc.) are the following: ISO on Auto, program dial on S (schutter preset) and the shutter speed on 160 or 200, aperture on the lens on 11, the focus ring on the lens between 3m and infinity. Then everything is sharp from 2 meters. It is very important to switch the APS-C sensor adjustment from Auto to OFF in the camera menu. The camera in the standard setting automatically switches the sensor to the APS-C crop as it cannot recognize the lens because there is no electronic communication between the camera and the lens. Without this, you only get an image section that also looks significantly worse in terms of imaging performance and strong achromatic aberrations can occur under certain circumstances. Therefore very important! As many may have noticed, the Sony version is significantly more expensive than the Canon version, so the 70 euros for the Commlite adapter are paid out again, especially if two or more different K&F Concept lenses are purchased, as in my case. The lens is really recommended and a lot of fun!