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07-20-2016, 06:24 PM   #61
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I just received a e-mail stating that the Laowa STF 105 mm f2 lens is available now in K mount at B and H.

07-20-2016, 07:43 PM   #62
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According to Venus Optics, the Pentax version of the STF 105/2 has a PK-A mount. That should mean an "A" setting!

Available at B&H for $699 but also from Venus Optics directly (free shipping).

UPDATE: The previous "PK-A mount" information was a mistake. In their own words:
"Sorry that I made a mistake on the previous reply. The PKA mount will be implemented in our next launching product instead of the 105mm in this moment. The current 105mm PK mount has an aperture lever for automatic aperture. Sorry for the confusion.

Last edited by Class A; 07-22-2016 at 06:26 PM.
07-21-2016, 05:45 PM   #63
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QuoteOriginally posted by Class A Quote
According to Venus Optics, the Pentax version of the STF 105/2 has a PK-A mount. That should mean an "A" setting!

EDIT: Available at B&H for $699 but also from Venus Optics directly (free shipping).
Nice find Class A, that's exciting indeed. Now I have to answer the question of whether this lens would provide enough utility when I already own the excellent DFA100/2.8. Of course it's a lens suited for an entirely different purpose... tempting!
07-22-2016, 12:07 AM   #64
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I'll believe it when I see it. It would be awesome if true.

07-22-2016, 10:44 AM   #65
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They´ve corrected it, this lens will be PK only. That´s too bad.
07-22-2016, 03:43 PM   #66
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Laowa is now saying it has an aperture lever but no contacts. Their next lens project will have contacts and a lever.
07-22-2016, 06:35 PM   #67
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QuoteOriginally posted by CarlG Quote
They´ve corrected it, this lens will be PK only. That´s too bad.
Yes, too bad indeed.

I just saw their reply as well and have updated my post.

On the one hand it is excellent that they are going to extend their line up and will support Pentax with PK-A in the future.

On the other hand, I don't understand why the 105/2 STF cannot be released with PK-A straight away. The main complication should be the aperture lever. Adding a couple of contacts and a trivial amount of electronics should not make much difference at all.
07-23-2016, 02:06 AM   #68
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What's the big deal? Tthe Canon mount doesn't offer aperture automation. Pentax shooters must just be lazy. If it has only the lever than the Pentax mount has something over the Canon mount.

Canon mount - go to 2:45 in the video "It's a fully manual lens. Manual focus and manual aperture control.".. The reviewer shows the mount and you can see there are no contacts at all - even for focus confirmation.

On the Laowa site:

QuoteQuote:
Chuck
March 14, 2016 at 5:40 pm Reply

Does the 105mm lens have auto-aperture for DSLRs?

admin
March 15, 2016 at 4:11 am Reply

Yes for Nikon / Sony A / Pentax K mounts.


Andreas
March 22, 2016 at 12:05 am Reply

Do the Canon or the native FE mount versions have electronic contacts to indicate the focal length to the camera? I understand that all other functions are manual.

admin
March 22, 2016 at 5:32 am Reply

The Canon mount will have focus confirmation chip which will have notification sound where its in focus.


Like I said before, I'll believe it when I see it. For now, I wouldn't believe what Laowa says.

Update: It seems the Nikon mount has no electronic contacts or aperture coupling either. It does have a lever on the mount but that's it. It's basically a Nikon F mount.

Warning this video is rather painful to watch (IMHO): @ ~5:53 you can briefly see the rear mount. Lever but no contacts. @16:00 the reviewers shows the lack of aperture coupling and a detailed comparison of the mount with a couple Nikon lenses.

Update 2: This video shows a focus confirmation chip on the Canon mount. The first review may have gotten a pre-production sample or maybe some have the chip and some don't. See the screen cap below or the first 10 seconds of the video.


Attached Images
 

Last edited by Not a Number; 07-23-2016 at 03:11 AM.
09-12-2016, 09:29 AM   #69
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Has anyone obtained the lens in the meantime?
09-12-2016, 12:36 PM   #70
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The Laowa 2:1 macro has had some unbranded versions (probably same-factory night runs) floating around various Chinese ebay sellers at much lower rates. I wonder how long until somehting similar happens for this one...
09-12-2016, 03:38 PM   #71
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I'd be happy to pay full price for a PK-A lens.

Given that they announced a follow up lens with PK-A mount quite a while ago, they should be able to offer an Mk II version of the STF 105mm with a PK-A mount, right?

@dcshooter: I take it, it would exceed your abilities to convert the current STF 105mm version into one supporting an "A setting"? I think the biggest challenge would be to get the electronics that deliver focal length, etc.
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