05-04-2016, 06:44 AM
Personally I would be very happy with screw-drive on the Nikon mount, the electronic circuit and the AF gearing would be relatively simple to implement....and inexpensive.
.......however, in these modern times Samyang would be wise to go directly to ultrasonic ring drive à là Tamron.......
I have only one Samayang lens and that's the 8mm fisheye in the Pentax mount.......it's a super little lens, sharp and very resistant to flare...and very well made....(Nikon would do well to implement it's construction BTW)..........as it happens it's also well centered.........
...which is more than I can say for the four decentered Nikon zooms I have had pass through my hands recently.... ............2 de-centered AF-s 18-105mm....... an AF28-85mmD 3.5/4.5 .....and a AF35-70mmD F2.8......wait..no..five the AF35mmF2D.....
I'm convinced the very stability of the Earth's path is under threat from the shear number of de-centered lenses that are continuously circumnavigating the globe... these land only very briefly on camera's bayonets before retaking to the air having imparting their centrifugal impact on the Earths orbit before the return voyage to Amazon (or the like), where a new voyage is being sponsored by another poor client at his keyboard........and so on....ad infinitum....
They are known as "Shuttle optics " in the trade!
.......however, in these modern times Samyang would be wise to go directly to ultrasonic ring drive à là Tamron.......
I have only one Samayang lens and that's the 8mm fisheye in the Pentax mount.......it's a super little lens, sharp and very resistant to flare...and very well made....(Nikon would do well to implement it's construction BTW)..........as it happens it's also well centered.........
...which is more than I can say for the four decentered Nikon zooms I have had pass through my hands recently.... ............2 de-centered AF-s 18-105mm....... an AF28-85mmD 3.5/4.5 .....and a AF35-70mmD F2.8......wait..no..five the AF35mmF2D.....
I'm convinced the very stability of the Earth's path is under threat from the shear number of de-centered lenses that are continuously circumnavigating the globe... these land only very briefly on camera's bayonets before retaking to the air having imparting their centrifugal impact on the Earths orbit before the return voyage to Amazon (or the like), where a new voyage is being sponsored by another poor client at his keyboard........and so on....ad infinitum....
They are known as "Shuttle optics " in the trade!