12-18-2014, 10:23 PM
(This post was last modified: 12-18-2014, 10:27 PM by Klaus.)
What drives them ? Well, that's easy - money.
They have their moments of existence and make their bucks. Then they are shut down and the factory owners enjoy their life overseas at the beach while starting their next copycat project.It's a calculated risk I'd say.
Makes you wonder if they pay "any" bills, Canons version is a very good value for money $100, can't see a lot of profit there, Youngnou are asking $40, that can only give them a couple of gin and tonics with straw hats in on the beach!
I would guess that the patent protection on the original design of these lenses has expired.
50/1.8, 50/1.4, and 35/2 copies for canon on the way. They claim to be moving to clone nikon's 50/1.8 AF-S. That will be interesting, as there is an asphere involved and there is no cheap way to manufacture an asphere.
Is it an optical copy? I haven't looked closely but vaguely recall seeing a comparison somewhere suggesting the Yongnuo looks better wide open than the original.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.
They most likely copied the design and then tried substituting acrylic for a lens or two. If taht worked without wrecking the performance it could perform better after optimization, since the material change would force it into a different design space.