Which wide-angle lens on a Sony A7RII (secondhand -$600) with AF ?

I know nothing about Sony glass, do they have a cheap UWA lens -$600 second handprice?
As i'm going to use an MC-11 or Metabones V for my Canon glass I only know the Canon 17-40 f4L for this price
It may also be a prime.

Does the Rokinon/Samyang 14 2.8 AF (Sony mount) works good with the A7RII for example, anyone tested this ?

No cheap Sony wide angle zooms; cheapest is the 16-35 f/4 at ~$1300 new

The Samyang 14 f/2.8 is probably the best bet for native glass. There is also the Sony 28 f/2 which has optional wide angle and fisheye converters (which turn it into a 21mm or 16mm fisheye), but the price of the lens with converter(s) is more than the Samyang

If you want a cheap zoom you're better off with an EF mount lens on the adapter. The Canon 17-40, or Tokina makes a few wide-angle EF zooms.
Could also try the Canon 10-18; it's an EF-S lens but works from 14-18mm on full frame cameras. Might be worth trying out. https://photography-on-the.net …/showthread.php​?t=1388461

due to the initial popularity of the 12-24 and 16-35GM, the 16-35 F4 has taken a hit on prices. It ranges slightly out of your territory at 700-850 used.

I'de save up a little more and get that, optically it's pretty good.

And if you could chose between the Canon 17-40 f4L, 16-35 F4L both with adaptor or the new Rokinon/Samyang 14 f2.8 AF directly with sony mount, which one would you prefer and why ?

I'd go with a 16-35 if you can afford it. I prefer the zoom for focal length options, and the 16-35 is significantly sharper than the 17-40

I have a Canon 16-35 f/4 L IS and a Rokinon 14 f/2.8 (the old manual focus version), and the Canon was my favorite lens on my Sony A7 (on a metabones adapter). The autofocus was pretty bad, so I manually focused most of the time; AF on the newer Sony bodies (A7ii, A7Rii, A7Riii, A6500) should be fine. Pretty much the only time I used the Rokinon was for astrophotography, where the extra stop in aperture helped. For landscapes I was usually stopping down from f/4 anyway.

The native Sony 16-35 f/4 will be a little smaller (the lens is about the same size, but you don't need an adapter), and similar in image quality (I think the Canon is a little better, but they're close). If I was buying now I would get it instead of the Canon (when I bought the Canon lens I was still using a Canon DSLR as well)

Personally, my 17-40L is practically glued to my A7RII. Is it the best UWA out there? Uh, no. Do I have issues with it's sharpness? Not really. Bear in mind too that i shoot in the beach a lot where sand and sandstone really test the lenses IQ. I've found that by focus stacking at wider apertures I can get images that are plenty sharp when I need to (think of lots of sand very close to the lens) otherwise shooting at f/11 works just fine too.

Thanks I ordered a second hand 17-40 f4L for $400, sharpness at f8/f11 isn't much difference with my previous 16-35 f4L IS I guess
Just read crop lenses like the 12-24 etc would also work, maybe I ordered too fast...