Ultra Wide Angle Outdoor Security Camera

[Manual Focus] Love this ultra-wide angle, fast lens on my full-frame camera. Takes great Milky Way shots.

[109° to 70°] I have never owned an ultra-wide-angle lens before. This one intrigued me, especially because of the price. However, I own a D7100, and this lens isn't fully compatible with my camera. I read the comments on the Nikon USA forum, and decided to purchase the lens anyway. When the lens arrived I attach it to my camera and started taking pictures just like I would with any other lens. Everything worked the way it should. I put the lens on my tripod and took some landscape photos. They are as sharp as you would ever expect them to be. No trouble at all with the VR. I have taken photos of my grandchildren playing in the backyard in the wading pool and they are sharp and colorful. Of course, there must be a little cropping here and there. But I am really pleased with how this lens works with my camera. I have no other ultra-wide-angle lens to compare it with. From all I have seen, this lens does everything I have ever expected from this type of a lens. I am very happy that I purchased it, and would highly recommend it to others. It's light and easy to handle. The manual focus is always active on my camera because there isn't any menu option to disable it, but I have never really tried to use manual focus with any of my other lenses anyway. Take note that I am an amateur photographer who is easily pleased. But I am pleased with this new lens.

[Glass] This is a high quality UV filter with a slim profile. Good for an ultra wide angle lens. I got mine on sale so it was also a reasonable value. Seems well built.

[0.615 lb] Even though you might think you don't need a polarizer for an ultra wide-angle as it will distort the sky, it has been exceedingly for me for reflections on foliage and water as well as reflections of windows.

[82 mm] I bought this filter for the Sigma 10-20mm ultra-wide angle lens. This filter does an excellent job protecting the lens as well as reducing the effect of glare from the sun. I use this filter in conjunction with a circular polarizing filter. I noticed during my last shoot that dust particles tended to collect on the filter, but with the proper lens-safe cleaning brush, those particles come right off.

[Pentax K] I have been swapping lenses and have replaced all of them with the exception of this incredible ultra wide angle lens. The packaging is very unique and the lens will surely outlive me. I am using it on a Canon EOS R6 with the control ring adapter.

[2"] I have three ES ultra wide angle eyepieces. They all hefty and feel very well built. Well worth the money. Using this 20mm on my 12" dob. I have the ES 82 degree 30mm and ES 100 degree 5.5. Discounting the magnification, the 20mm feels like the sharpest of the three.

[Canon RF] I mostly use the adapter with ultra wide angle lenses that would be difficult to attach a filter to in front. A little pricey but worth it.

[Full-Frame] The Zeiss Milvus 35mm f/1.4 is not an Otus, but it is as close to one as I have seen a less expensive lens come. And it fills a gap in lenses that, as a close-up photographer, I need, although I have other 35mm lenses, but I don't like them. Is it sharp? Yes, it is sharp, not ultra-ultra sharp but sharp enough to pass the sharp test with me, easily. It does not distract me for lack of sharpness. The color is good. There is some very, very minor fringing, I believe, but not enough for me not to use the lens. I am not so concerned with traditional one-off photos, but more in how the lens will stack. It stacks well for a wide-angle. Does it take extension? Yes, it takes the K1-Ring, 5.8mm of extension... pretty well, which is good for a wider-angle lens. It has 9 rounded blades. The close range is 11.81 inches (30 cm), which is excellent. The filter is 72 mm. It is manual focus, which is all I use anyway. It has an ample focus throw, which is wonderful, since many wide-angle lenses have a short throw. The only fault I have found so fa, and it can be anticipated is that it does not do super well with highlights and light areas. It's OK, and I can work around it, but the highlights seem to wash out early IMO. I order, but send many lenses back. I believe I will keep this one.

[Full-Frame] I love dramatic landscapes with wide or ultra wide angle lenses however the effects at the edge or the distortion is something I'm less happy about. Although the perspective shift can be taken care of �in post processing, I wanted a lens that can do panorama shots with edge to edge sharpness, incredible depth of field, no vertical distortion and a print that approximates something larger than the 35 mm perspective. As far as I know only a Tilt - Shift lens can accomplish this. As well, it's original intent as an architectural lens is a terrific feature as well!