Even when focusing manually, I prefer to autofocus first, toggle to manual, and then fine-tune

For example, I'd start focusing, slow it down when nearing the correct focus, and then over shoot a tiny bit because it's difficult to tell when focus has peaked.

Accurate focus can be an issue if you are locked into using the focus scale on the lens

Everything in the viewfinder seems like it is in sharp focus no matter how the lens is already focus.

Initial impression are very good, difficult to get a correct focus, but for the price is a bargain, good photo quality.

Very soft focus

Manual focus is really a non issue on a lens this wide, using the simple hyperfocal settings.

Never able to get sharp focus either on closer subject or far away subjects at any aperture

at f2.8, looks like a soft focus lens.

The manual focus is difficult to determine where it needs to be set

Let’s talk about sharpness and focus: like most super wide lenses there is considerable wide focus depth, so your long shots should be easy enough to achieve the best sharpness this lens will provide, and btw, so far I find it very acceptable

I have found that using the lcd display with the digital zoom function to focus on my subject is by far the best way to ensure a crisp focus.

The focus ring turns very smooth with long travel to obtain precise focus.

Manual focus and aperture is not an issue with this focal length.

Accurate focus can be an issue if you are locked into using the focus scale on the lens

Would prefer auto focus but so far have not missed it, still to try astrophotography with tbis lens.

Awesome optics, images are clean, very sharp when stopped down around 5.6 or 8 (even quite sharp wide open), great smooth focus, solid feel, beautiful form factor

It won't change and the focus is horrible

If you are planning to do any night shooting you MUST find the ideal focus setting on the lens for infinity before you go out.

For example, I'd start focusing, slow it down when nearing the correct focus, and then over shoot a tiny bit because it's difficult to tell when focus has peaked.

It's not the most practical lens - very much dedicated to landscapes, wide field astro and even real estate, but being manual focus and without the ability to add screw on filters, I can't automatically recommend it to everyone

Focus is easy, just set it to infinity for almost all situations

It interfaces with my D750 Nikon perfectly with the camera giving me accurate focus and exposure

Good build quality (focus ring is tight and not flimsy)

I've seen a lot of comments about soft focus, I myself did not experience

The lens had very severe focus misalignment

With lens aperture set F2.8, fine tuned the focus.

Using a magnified LiveView becomes essential in getting this lens in sharp focus.