No mention of autofocus so probably manual focus only, pretty cool but I wouldn’t buy a lens without autofocus
With my very POOR eyesight, I used to say exactly this very same thing.
But of late, with a couple of mirrorless camera systems I"ve been playing with...especially with regard to adapting vintage lenses, I've come to find that the modern mirrorless cameras with their focus assist capabilities in the viewfinders really make it pretty easy to manual focus, even for someone like myself that wears coke bottles for glasses.
It really isn't that bad. I mean, sure, if you are only shooting fast moving things...sports, race cars, etc.... you need a quick autofocus lens to get a higher hit rate.
But if you have any time at all to set up your shots, and be thoughtful on composition, then a manual lens is not that much more effort to use.
And, more and more, I"m finding myself, setting my cameras up, for the most likely shots I"d take.
For example walking out the door I use the sunny 16 rule and set my aperture/ISO/SS accordingly to the light and how I want my depth of field.
After that I set my lens to my "walking around" focus length, from xyz feet to infinity.....if on a manual lens and when I see something to shoot I just pull the camera up and compose and shoot.
ON my auto cameras I have them all set to back button focus, so, I'd just use that to focus once at those "walking around" distances for shooting off the hip.....and only need to generally use the focus button for an exact focus from time to time.
I've found myself more and more using old tried and true film photography days' techniques.
And quite often, if you can preset your camera to this...you can take pictures faster than someone having to set focus, etc....
So, don't forgo manual completely....if nothing else, since often these manual lenses are cheaper, and often have some really interesting perspectives that would NEVER be made by Canon or the likes, give one or two a try and give yourself a new challenge to play with.
For instance, I seriously doubt that Canon will ever put out a RF 15mm 1:1 wide angle macro lens like Laowa did....but this is a FUN lens to shoot and only a few hundred dollars.
Definitely worth the price.
More and more too, I"m not considering clinical sharpness of a lens to be the end all/be all of a lens's worth....you can get some incredible shots with (often inexpensive) vintage lenses with adapters that are manual focus only.....
Just some of my ramblings.....
cayenne