[Klaus]

https://photorumors.com/2018/02/26/sigma-to-announces-9-new-full-frame-lenses-for-sony-e-mount/#more-95980

That approach is a little meh ...

It's really astounding that Sigma doesn't jump on the mirrorless wagon really.
The days that mirrorless cameras were exotics are long gone by now.

[JJ_SO]

9 AF primes is "meh" to you? Feel free to kickstart your own design of AF lenses. Like Tamron, Tokina, Voigtländer, Laowa - whoopsy: No other brand comes up with new designed fast and affordable AF lenses? Don't they want to jump the Sony waggon? How come?

[Klaus]

9 AF primes is "meh" to you? Feel free to kickstart your own design of AF lenses. Like Tamron, Tokina, Voigtländer, Laowa - whoopsy: No other brand comes up with new designed fast and affordable  AF lenses? Don't they want to jump the Sony waggon? How come?

I'm sure you are aware that
- these are no dedicated mirrorless designs this just adding a spacer is a little cheap 
- the AF motor is DSLR centric - works well with phase detection AF but crappy with contrast AF.

And whoopsy ... why can't Sigma do what Samyang can ... :-)

[JJ_SO]

The AF - at least what Sigma claims - is changed to the needs of mirrorless. So it's a bit more than just a fixed spacer, but if I were Sigma I would go the same path: The lenses already are big, heavy and good. More distance to the sensor is a good thing in terms of corner vignetting, I think. Developing a new set of lenses, although there is no FF mirrorless from the big 2 would appear to me as economical bullshit, sorry. If samyang wants to dedicate themselves to Sony bodies, have fun - they already are new kid in town if it comes to AF lenses, so why not start with what it's available.

But Sigma's hesitation I understand fully.

[miro]

why not?

https://vignette.wikia.nocookie.net/monstertruck/images/7/75/5169685402_bc296e9ec5_z.jpg/revision/latest?cb=20150127231025

https://www.redline360.com/garage/wp-content/uploads/2012/12/donk-corvette.jpg

[Rover]

This is rather disappointing in itself, and I would've said more fitting for slackers like Samyang, but even Samyang has started to work in the earnest.
I have no FE cameras to consider, and I'd hardly go for any of those to put on the NEX-3 that I happen to have - if anything, I'd rather get a Canon mount version to do double duty on an adapter. I'm sure most users feel about the same.

[Klaus]

FWIW, Sigma claims to have improved the algorithm - thus it's not about new AF hardware.

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why not?

https://vignette.wikia.nocookie.net/monstertruck/images/7/75/5169685402_bc296e9ec5_z.jpg/revision/latest?cb=20150127231025

https://www.redline360.com/garage/wp-content/uploads/2012/12/donk-corvette.jpg

Indeed ;-)

[youpii]

I prefer to see the glass as half full and be happy of the possibility to mount the mighty ART 85/1.4, 105/1.4 & 135/1.8 with native high speed AF instead of with the slow MC-11 adapter.

As the size of the Sony Zeiss/GM 35/1.4, 50/1.4 & 85/1.4 is similar to the Sigmas, I'm not sure if a redesign from Sigma would be worth the efforts.

The case of the 14, 20 & 24mm is more disappointing but there are already many e-mount alternatives for wide angles.

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- if anything, I'd rather get a Canon mount version to do double duty on an adapter. I'm sure most users feel about the same.

That's probably the safest approach if you shoot static or slow moving objects.

In my experience, AF-C was not reliable past 3fps with the MC-11 adapter. I guess the protocol conversion introduces some lag in the communication between the camera and the lens.

For the e-mount lenses, Sigma claims to have licensed the protocol from Sony and that the lenses are compatible with high speed AF.