Win a Pentax Limited Lens: Raffle Now Live!

But not for Pentax (Yet....)

http://www.digitalrev.com/article/samyang-go-premium-with-new-85mm-f1-2-and-14mm-f2-4-lenses

Not even in Nikon F or Sony E mount as far as the 85mm f/1.2 is concerned: these mounts are too narrow to accommodate a 85mm f/1.2's rear element together with the mount's electric contacts.

Look at the rear of a Canon EF 85mm f/1.2L II USM:

The Mitakon Speedmaster 85mm F1.2 is available in K (and F and E en EF) and the back element is not that wide...

Nothing to do with K-mount, so should be in the section for "other brands".

Sofar Samyang has always brought out a K-mount version, if sometimes later. Mr pessimist.

It's not even for Nikon, the 85. So save your judgement for real products coming for K-mount.

These are lenses for mirrorless systems. Clicked the wrong button


Steve

The Mitakon Speedmaster 85mm f/1.2 has no electrical contact which could interfere with the optical path and the picture you posted is that of the 14mm f/2.4 -see the petal-shaped hood.

To find a picture of the rear of the Samyang Premium 85mm f/1.2 you have to go to the page of the 14mm f/2.4 .

Nope:
Samyang Optics, Lenses for Camera ? Cine ? CCTV ? Photo, Prime Lenses & Third party Lenses
Canon EF. It is aimed at the 5Ds with it's 50mp resolving power.

The other one is coming in EF F and E (probably just a bit longer). Samyang Optics, Lenses for Camera ? Cine ? CCTV ? Photo, Prime Lenses & Third party Lenses

---------- Post added 12-09-16 at 18:24 ----------

Still enough room. For Pentax anyway with the contacts on the flange.

Except that the K mount is one centimetre narrower than the Canon EF mount (44mm instead of 54mm)...

And the back element is roughly 41.5mm measured in photoshop.

I don't know much about Photoshop measurements but I do know that there are definitely not 5mm of available space between the rear element and the contacts in the picture above. With a Pentax K mount the contacts would be in the optical path, even more than those of a Canon EF 85mm f/1.2L, and they might even interfere with the rear element since the register of the K mount is 1.46mm longer than the one of the Canon EF mount (all things being equal, the rear element would be 1.46mm closer to the flange).

they are outside the throat. you are not making sense.

Indeed. I stand corrected.

Then the reason for no K-mount version at launch is the same for the two lenses: the design of these Samyang Premium lenses natively includes an electro-magnetic command of the aperture instead of a mechanical command of some sort.

This gives more freedom to design the lens but you need a lens mount that supports this sort of thing. Pentax K-AF4 does but it's only 4 months old and supported by too few a camera for Samyang to be interested in the corresponding market.

yeah but you made that up. There is no reason why they couldn't make it work on Pentax or even Nikon.